Publications

Muraoka K. and Kagi H. (2024) Humidity-induced aragonite formation from amorphous calcium carbonate (ACC) with addition of n-butylamine. Journal of Solid State Chemistry, in press.

Takano M., Kagi H., Mori Y., Aoki K., Kakizawa S., Sano-Furukawa A., Iizuka-Oku R., Tsuchiya T. (2024) Low reactivity of stoichiometric FeS with hydrogen at high-pressure and high-temperature conditions. Journal of Mineralogical and Petrological Sciences, 119:013. doi:10.2465/jmps.240122

He X., Kagi H., Komatsu K., Iizuka-Oku R., Okajima H., Hattori T., Sano-Furukawa A., Machida S., Abe J., Gotou H., and Nakano S. (2024) Hydroxyl group/fluorine disorder in deuterated magnesium hydroxyfluoride and behaviors of hydrogen bonds under high pressure. Journal of Molecular Structure, 1310, 138271. https://doi.org/10.1016/j.molstruc.2024.138271

Mori Y., Kagi H., Aoki K., Takano M., Kakizawa S., Sano-Furukawa A., and Funakoshi K. (2024) Hydrogenation of silicon-bearing hexagonal close-packed iron and its implications for density deficits in the inner core. Earth and Planetary Science Letters, 634, 118673. https://doi.org/10.1016/j.epsl.2024.118673

Takahashi N., Kobayashi H., and Kagi H. (2024) High-pressure and high-temperature Raman spectroscopic study of zircon as a pressure scale in hydrothermal DACs. Journal of Raman Spectroscopy, in press. https://doi.org/10.1002/jrs.6663

Fukushima N., Sumino H., Kobayashi M., and Kagi H. (2024) Two metasomatic events recorded by noble gas characteristics in the Finero mantle wedge: Extreme fractionation (He, Ar) and seawater penetration into the mantle deformation zone. Chemical Geology, 664, 121829. https://doi.org/10.1016/j.chemgeo.2023.121829

Takaku Y., Higaki S., Hirota M., and Kagi H. (2023) Radiocesium-bearing microparticles found in dry deposition fallout samples immediately after the Fukushima nuclear accident in the Kanto region, Japan. *Scientific Reports, *13, 21826. https://doi.org/10.1038/s41598-023-49158-2

Kobayashi H., Komatsu K., Ito H., Machida S., Hattori T., and Kagi H. (2023) Slightly hydrogen-ordered state of ice IV evidenced by in situ neutron diffraction. The Journal of Physical Chemistry Letters, 14, 10664-10669. https://doi.org/10.1021/acs.jpclett.3c02563

Yamashita K., Nakayama K., Komatsu K., Ohhara T., Munakata K., Sano-Furukawa A., and Kagi H. (2023) Hydrogen-bond network in sodium chloride tridecahydrate, analogy with ice VI. Acta Crystallographica B., 79, 414-426. https://doi.org/10.1107/S2052520623007199

Miwa T., Ishibashi H., Kazahaya R., Okumura S., Iguchi M., Saito G., Yasuda A., Geshi N., and Kagi H. (2023) Redox state of magma recorded in volcanic glass from an ash-forming eruption at Bromo volcano, Indonesia: Implications for degassing process. Bulletin of Volcanology, 85, 48. https://doi.org/10.1007/s00445-023-01660-1

Hirai E., Sekine Y., Zhang N., Noda N., Tan S., Takahashi Y., and** Kagi H.** (2023) Rapid aggregation and dissolution of organic aerosols in liquid methane on Titan. Geophysical Research Letters, https://doi.org/10.1029/2023GL103015

Iijima M., Komatsu K. Kagi H., Maekawa Y., Sasaki T., Hyodo S., Kimura R., Futami T., and Suzuki M. (2023) Hydroxyapatite in Whitlockite-based hypermineralized hard tissue of elephant shark (Callorhinchus milii) tooth plate. Crystal Growth & Design, in press.

Takimoto Y., Monkawa A., Nagata K., Kobayashi M., Kinoshita M., Gessei T., Mori T., and Kagi H. (2023) Localized surface plasmon resonance sensing of SO2 and H2S under humid conditions using zeolitic imidazolate framework-8 (ZIF-8). Sensors and Actuators B, 383, 133585. https://doi.org/10.1016/j.snb.2023.133585

Fukuyama K., Kagi H., Inoue T., Kakizawa S., Shinmei T., Sano Y., Deligny C., Füri E. (2023) Temperature dependence of nitrogen solubility in bridgmanite and evolution of nitrogen storage capacity in the lower mantle. Scientific Reports, 13, 3537.

Ono H., Kurosawa K., Niihara T., Mikouchi T., Tomioka N., Isa J., Kagi H., Matsuzaki T., Sakuma H., Genda H., Sakaiya T., Kondo T., Kayama M., Koike M., Sano Y., Murayama M., Satake W. and Matsui T. (2023) Shock recovery with decaying compressive pulses: Shock melt veins in basaltic rocks. Geophysical Research Letters, https://doi.org/10.1029/2022GL101009

鍵 裕之、森 悠一郞 (2022) 地球核の水素：高温高圧下中性子回折による鉄中の水素の観察 地球化学 56, 109-120. doi:10.14934/chikyukagaku.56.109

Yamashita K., Komatsu K., and Kagi H. (2022) Crystal structure of potassium chloride monohydrate: water intercalation into the B1 structure of KCl under high pressure. Acta Crystallographica Section C, 78, 749-754. https://doi.org/10.1107/S2053229622011135

Kiseeva K., Korolev N., Koemets I., Zedgenizov D., Unitt R., McCammon C., Aslandukova A., Khandarkhaeva S., Fedotenko R., Glazyrin K., Bessas D., Aprilis G., Chumakov A., Kagi H., and Dubrovinsky L. (2022) Subduction-related oxidation of the sublithospheric mantle evidenced by ferropericlase and magnesiowüstite diamond inclusions. Nature Communications, 13, 7517. https://doi.org/10.1038/s41467-022-35110-x

Iizuka-Oku R., Gotou H., Suzuki A., and Kagi H. (2022) In-situ X-ray diffraction and radiography of iron-silicate-water-sulfur system simulating behaviors of light elements during early Earth's core-mantle segregation. High Pressure Research, https://doi.org/10.1080/08957959.2022.2148207

Sugawara S., Fujiya W., Kagi H., Yamaguchi A., and Hashizume K. (2022) Heat-induced dolomitization of amorphous calcium magnesium carbonate (ACMC) in a CO2-filled closed system. ACS Omega, https://doi.org/10.1021/acsomega.2c03258

Komatsu, K. (2022). Neutrons meet ice polymorphs. Crystallography Reviews, 1-74. doi: 10.1080/0889311X.2022.2127148

Yamashita K., Komatsu K., Klotz S., Fabelo O., Maria T. Fernández-Díazc M.T., Abe J., Machida S., Hattori T., Irifune T., Shinmei T., Sugiyama K., Kawamata T., and Kagi H. (2022) Atomic distribution and local structure in ice VII from in situ neutron diffraction. Proceedings of the National Academy of Sciences, 119, e2208171119. doi.org/10.1073/pnas.2208717119

Ujiie K., Noro K., Shigematsu N., Fagenereng Å, Nishiyama N., Tulley C.J., Masuyama H., Mori Y., and Kagi H. (2022) Megathrust shear modulated by albite metamosomatism in subduction mélanges. Geochemistry, Geophysics, Geosystems, 23, e2022GC010569. doi.org/10.1029/2022GC010569.

Marugata S., Kagi H., Ijichi Y., Komatsu K., Xue X., and Sugiyama K. (2022) Experimental evidence of static disorder of carbonate ions in Ba-doped calcite. Journal of Solid State Chemistry, 312, 123258. doi.org/10.1016/j.jssc.2022.123258.

He X., Zhang L., Kagi H., Smyth J.R., Komatsu K., Li X., Gao J., and Lei L. (2022) In-situ high-pressure and high-temprature spectroscopic studies of phengite in ultrahigh-pressure eclogite: Implication for water transport during ultra-deep continental subduction. Physics and Chemistry of Minerals, 49, 24. https://doi.org/10.1007/s00269-022-01196-4

Shito C., Kagi H., Kakizawa S., Aoki K., Komatsu K., Iizuka-Oku R., Abe J., Saitoh H., Sano-Furukawa A., and Hattori T. (2022) Hydrogen occupation and hydrogen-induced volume expansion in Fe0.9Ni0.1Dx at high P-T conditions. American Mineralogist, doi.org/10.2138/am-2022-8348, in press.

Yun S., Hwang H., Hwang G. C., Kim Y., Blom D., Vogt T., Post J., Jeon T-Y., Shin T. J., Zhang D., Kagi H., and Lee Y. (2022) Super-hydration and reduction of manganese oxide minerals at shallow terrestrial depth. Nature Communications, 13, 1942. doi.org/10.1038/s41467-022-29328-y

Yamashita K., Komatsu K., Ohhara T., Munakata K., Irifune T., Shinmei T., Sugiyama K., Kawamata T., and Kagi H. (2022) Improvement of nano-polycrystalline diamond anvil cells with Zr-based bulk metallic glass cylinder for higher pressures: application to Laue-TOF diffractometer. High Pressure Research, doi. 10.1080/08957959.2022.2045982

Hayashi H., Mikouchi T., Kim N.J., Park C., Sano Y., Tekanouchi A., Yamaguchi A., Kagi H., and Bizzarro M. (2022) Unique igneous textures and shock metamorphism of the Northwest Africa 7203 angrite: Implications for crystallization processes and the evolutional history of the angrite parent body. Meteoritics and Planetary Science, 57, 105-121. doi: 10.1111/maps.13776

Lamers B.A.G., van Son M.H.C., de Graaf F.V., van den Bersselaar B.W.L., de Waal B.F.M., Komatsu K., Sato H., Aida T., Berrocal J.A., Palmans A.R.A., Vantomme G., Meskers S.C.J. and Meijer E.W. (2022) Tuning the donor–acceptor interactions in phase-segregated block molecules, Materials Horizons, 9, 294-302. doi: 10.1039/D1MH01141C

Zhao Z., Kagi H., Komatsu K., Yamashita K., and Nakano S. (2022) Pressure-induced phase transitions of cobalt sulfate hydrates and discovery of a new high-pressure phase, CoSO4・H2O, Journal of Solid State Chemistry, 308, 122904. https://doi.org/10.1016/j.jssc.2022.122904

飯塚 理子、鍵 裕之 (2022) 金属鉄の水素化反応に硫黄が及ぼす影響と地球核の進化過程　まてりあ 61, 202-209.

He X., Kagi H., Komatsu K., and Nakano S. (2021), Compressibility and blue-shifting O–H stretching bands of magnesium hydroxyfluoride Mg(OH)F up to 20 ​GPa, J. Solid State Chem., 303, 122449, doi: 10.1016/j.jssc.2021.122449.

Miao P., Tan Z., Lee S., Ishikawa Y., Torii S., Yonemura M., Koda A., Komatsu K., Machida S., Sano-Furukawa A., Hattori T., Lin X., Li K., Mochiku T., Kikuchi R., Kawashima C., Takahashi H., Huang Q., Itoh S., Kadono R., Wang Y., Pan F., Yamauchi K. and Kamiyama T. (2021) Origin of magnetovolume effect in a cobaltite, Phys. Rev. B, 103, 094302. https://doi.org/10.1103/PhysRevB.103.094302

Nakano S., Sano-Furukawa A., Hattori T., Machida S., Komatsu K., Fujihisa H., Yamawaki H., Gotoh Y. and Kikegawa T. (2021) Observation of Dihydrogen Bonds in High-Pressure Phases of Ammonia Borane by X-ray and Neutron Diffraction Measurements, Inorg. Chem. 60, 3065-3073. doi: 10.1021/acs.inorgchem.0c03345

Yamane R., Komatsu K., Gouchi J., Uwatoko Y., Machida S., Hattori T., Ito H. and Kagi H. (2021) Experimental evidence for the existence of a second partially-ordered phase of ice VI, Nat. Commun., 12, 1129. doi: 10.1038/s41467-021-21351-9 Press release (Japanese) 解説記事(Japanese) YouTube video (Japanese)

Okumura S., Ishibashi H., Itoh S., Suzumura A., Furukawa Y., Miwa T. and Kagi H. (2021) Decompression experiments for sulfur-bearing hydrous rhyolite magma: Redox evolution during magma decompression. American Mineralogist, 106, 216-225. doi: 10.2138/am-2020-7535

Sano-Furukawa A., Kakizawa S., Shito C., Hattori T., Machida S., Abe J., Funakoshi K., and Kagi H. (2021) High-pressure and high-temperature neutron-diffraction experiments using Kawai-type multi-anvil assemblies. High Pressure research, doi.org/10.1080/08957959.2020.1867723

Iizuka-Oku R., Gotou H., Shito C., Fukuyama K., Mori Y., Hattori T., Sano-Furukawa A., Funakoshi K., and Kagi H. (2021) Behavior of light elements in iron-silicate-water-sulfur system during early Earth’s evolution. Scientific Reports, 11, 12632 https://doi.org/10.1038/s41598-021-91801-3

Cho Hwanbeom, Kim Choong H., Lee Y., Komatsu K., Cho B-G., Cho D-Y., Kim T., Kim C., Kim Y., Koo T.Y., Noda Y., Kagi H., Khomskii D., Seoung D., and Park J-G. (2021) Pressure-induced transition from Jeff = 1/2 to S = 1/2 states in CuAl2O4, Physical Review B, 103, L081101 https://doi.org/10.1103/PhysRevB.103.L081101

Litasov K.D., Kagi H., Bekker T.B., Makino Y., Hirata T., and Brazhkin V.V. (2021) Why Tolbachik diamonds cannot be natural. American Mineralogist, 106, 44-53. doi: 10.2138/am-2020-7562

Mori Y., Kagi H., Kakizawa S., Komatsu K., Shito C., Iizuka-Oku R., Aoki K., Hattori T., Sano-Furukawa A., Funakoshi K., and Saitoh H. (2021) Neutron diffraction study of hydrogen site occupancy in Fe0.95Si0.05 at 14.7 GPa and 800 K. Journal of Mineralogical and Petrological Sciences, 210825. doi:10.2465/jmps.210825

Kakizawa S., Shito C., Mori Y., Saitoh H., Aoki K., and Kagi H. (2021) Revised α/ε’-γ phase boundaries for the Fe-H system. Solid State Communications, doi. 10.1016/j.hssc.2021.114542

Meng W., Kondo S., Ito T., Komatsu K., Pirillo J., Hijikata Y., Ikuhara Y., Aida T. and Sato H. (2021) An elastic metal–organic crystal with a densely catenated backbone, Nature, 598, 298-303. 10.1038/s41586-021-03880-x

鍵裕之 (2021) 身近な鉱物 氷の科学 milsil［ミルシル］14, 28-32.

鍵 裕之 (2021) 地球化学：高圧下におけるパルス中性子回折実験の地球化学への展開 ぶんせき 2021, 646-651.

Sun Y., Fujimoto C., and Kagi H. (2020), Pressure-induced esterification reaction between phosphoric acid and methanol, Chemistry Letters, 49, 885-887, doi: 10.1246/cl.200289.

Litasov K.D., Bekker T.B., Kagi H., and Ohfuji H. (2020), Reply to the comment on “Comparison of enigmatic diamonds from Tolbachik arc volcano (Kamchatka) and Tibetan ophiolites: Assessing the role of contamination by synthetic materials” by Litasov et al. (2019). Gondwana Research, 79, 304-307, doi:10.1016/j.gr.2019.09.011.

Fukuyama K., Kagi H., Inoue T., Kakizawa S., Shinmei T., Hishita S., Takahata N., and Sano Y. (2020) High nitrogen solubility in stishovite (SiO2) under lower mantle conditions., Scientific Reports, doi:10.1038/s41598-020-67621-2. YouTube video (Japanese)

Suzuki Y., Yamashita S., Kouduka M., Ao Y., Mukai H., Mitsunobu S., Kagi H., Jondt S.D., Inagaki F., Morono Y., Hoshino T., Tomioka N., and Ito M. (2020), Deep microbial proliferation at the basalt interface in 33.5-104 million-year-old oceanic crust, Communications Biology, doi: 10.3389/fmicb.2019.02793.

Saito A., Kagi H., Marugata S., Komatsu K., Enomoto D., Maruyama K. and Kawano J. (2020), Incorporation of incompatible strontium and barium ions into calcite (CaCO3), through calcium carbonate, Minerals, doi: 10.3390/min10030270.

Komatsu K., Klotz S., Machida S., Sano-Furukawa A., Hattori T., and Kagi H. (2020), Anomalous hydrogen dynamics of the ice VII-VIII transition revealed by high pressure neutron diffraction, Proceedings of the National Academy of Sciences, doi: 10.1073/pnas. 1920447117.

Litasov K.D., Bekker T.B., and Kagi H. (2020), “Kamchatite” diamond aggregate from northern Kamchatka, Russia: New find of diamond formed by gas phase condensation or chemical vapor deposition-Discussion, American Mineralogist, 105, 141-143.

Komatsu K., Machida S., Noritake F., Hattori T., Sano-Furukawa A., Yamane R., Yamashita K., and Kagi H. (2020), Ice Ic without stacking disorder by evacuating hydrogen from hydrogen hydrate, Nature Communications, 11, 464, doi: 10.1038/s41467-020-14346-5.

Watanabe N., Morimatsu M., Fujita A., Teranishi M., Sudevan S., Watanabe M., Iwasa H., Hata H., Kagi H., Nishiyama M., Naruse K., and Higashitani A. (2020), Increased hydrostatic pressure induces nuclear translocation of DAF-16/FOXO in C. elegans, Biochemical and Biophysical Research Communications, 523(4), 853-858, doi: 10.1016/j.bbrc.2020.01.047.

Iizuka-Oku R., Gui W., Komatsu K., Yagi T., and Kagi H. (2020), High-pressure responses of alkali metal hydrogen carbonates, RbHCO3 and CsHCO3: Findings of new phases and unique compressional behavior, Journal of Solid State Chemistry, 283, 121139.

Yamashita K., Komatsu K., Klotz S., Fernandez-Diaz M.T., Febelo O., Irifune T., Sugiyama K., Kawamura T., and Kagi H. (2020), A nano-polycrystalline diamond anvil cell with bulk metallic glass cylinder for single-crystal neutron diffraction, High Pressure Research, 40, 88-95, doi: 10.1080/08957959.2019.1700980.

Ragozin A., Zedgenizov D., Shatsky V., Kuper K., and Kagi H. (2020), Deformation features of super-deep diamonds, Minerals, 10, 18, doi: 10.3390/min10010018.

Shinozaki A., Nagai T., Kagi H., and Nakano S. (2020), Pressure-induced irreversible amorphization of naphthalene and nitrogen-containing heteroaromatic compounds at room temperature, Chemical Physics Letters, doi: 10.1016/j.cplett.2019.136921

Takimoto Y., Monkawa A., Nagata K., Kobayashi M., Kinoshita M., Gessei T., Mori T., and Kagi H. (2019), Detection of SO2 at the ppm level with localized surface plasmon resonance (LSPR), sensing, Plasmonics, doi: 10.1007/s11468-019-01099-1.

Yamashita K., Komatsu K., Hattori T., Machida S., and Kagi H. (2019), Crystal structure of a high-pressure phase of magnesium chloride hexahydrate determined in-situ X-ray and neutron diffraction methods, Acta Crystallographica, C75, 1605-1612. doi: 10.1107/S2053229619014670

Suzuki M., Kubota K., Nishimura R., Negishi L., Komatsu K., Kagi H., Rehav K., Cohen S., Weiner S. (2019), A unique methionine-rich protein-aragonite crystal complex: Structure and mechanical function of the Pinctada fucata bivalve hinge ligament, Acta Biomaterialia, 100, 1-9. doi: 10.1016/j.actbio.2019.10.008

Litasov K.D., Bekker T.B. , and Kagi H. (2019), Reply to the discussion of “Enigmatic super-reduced phases in corundum from natural rocks: Possible contamination from artificial materials or metallurgical slags.” by W.L. Griffin, V. Toledo, and S.Y. O’Reilly, Lithos, 348-349, 105170. https://doi.org/10.1016/j.lithos.2019.105170

Dissanayake S.E., Matsuda M., Munakata K., Kagi H., Gouchi J., and Uwatoko Y. (2019), Development of cubic anvil type high pressure apparatus for neutron diffraction, Journal of Physics-Condensed Matter, 31, 384001. https://doi.org/10.1088/1361-648X/ab2688

Zedgenizov D.A., Ragozin A.L., Kagi H., Yurimoto H., and Shatsky V.S. (2019), SiO2 inclusions in sublithospheric diamonds, Geochemistry International, 57, 964-972.

Ishikawa M., Kagi H., Sasaki T., and Endo K. (2019), Chemical basis of molluscan shell colors revealed with in-situ micro Raman spectroscopy, Journal of Raman Spectroscopy, 50, 1700-1711. https://doi.org/10.1002/jrs.5708

Yamashita S., Mukai H., Tomioka N., Kagi H., and Suzuki Y. (2019), Iron-rich smectite formation in subseafloor basaltic lava in aged oceanic crust, Scientific Reports, 9, 11306. https://doi.org/10.1038/s41598-019-47887-x

Litasov K.D., Kagi H., Voropaev S.A., Hirata T., Ohfuji H., Ishibashi H., Makino Y., Bekker T.B., Sevastyanov V.S., Afanasiev V.P., and Pokhilenko N.P. (2019), Comparison of enigmatic diamonds from the Tolbachik arc volcano (Kamchatka) and Tibetan ophiolites: Assessing the role of contamination by synthetic materials, Gondwana Research, 75, 16-27. https://doi.org/10.1016/j.gr.2019.04.007

Litasov K.D., Kagi H., and Bekker T.B. (2019), Enigmatic super-reduced phases in corundum from natural rocks: Possible contamination from artificial materials or metallurgical slags, Lithos, 340-341, 181-190. https://doi.org/10.1016/j.lithos.2019.05.013

Nakamura Y., Hara H., and Kagi H. (2019), Natural and experimental structural evolution of dispersed organic matter in mudstones: the Shimanto accretionary complex, southwest Japan, Island Arc, doi: 10.1111/iar.12318.

Kagi H., Kubo T., Shinozaki A., Okada T., Ohfuji H., and Nakao A. (2019), Reaction between forsterite and nitrogen fluid at high pressure and high temperature, Geochemistry International, 57, 956-963. https://doi.org/10.1134/S0016702919090040

Kobayashi, M., Sumino H., Burgess R., Nakai S., Iizuka T.,Nagao J.,Kagi H., Nakamura M., Takahashi E., Kogiso T., and Ballentine, C. (2019), Halogen Heterogeneity in the Lithosphere and Evolution of Mantle Halogen Abundances Inferred From Intraplate Mantle Xenoliths, Geochemistry Geophysics Geosystems, 20(2), 952-973, doi: 10.1029/2018gc007903.

Kouketsu, Y., Miyake A., Igami Y., Taguchi T., Kagi H., and Enami M. (2019), Drastic effect of shearing on graphite microtexture: attention and application to Earth science, Progress in Earth and Planetary Science, 6, doi: 10.1186/s40645-019-0271-4.

Litasov, K. D., Kagi H., Bekker, T. B., Hirata T., and Makino Y. (2019), Cuboctahedral type Ib diamonds in ophiolitic chromitites and peridotites: the evidence for anthropogenic contamination, High Pressure Research, 39, doi: 10.1080/08957959.2019.1616183.

Shimizu, K., Kimura K., Isowa Y., Oshima K., Ishikawa M., Kagi H., Kito K., Hattori M., Chiba S., and Endo K. (2019), Insights into the Evolution of Shells and Love Darts of Land Snails Revealed from Their Matrix Proteins, Genome Biology and Evolution, 11(2), 380-397, doi: 10.1093/gbe/evy242.

Yamane, R.,Komatsu K., Maynard-Casely, H. E., Lee S., Booth N., and Kagi H. (2019), Search for a ferroelectrically ordered form of ice VII by neutron diffraction under high pressure and high electric field, Physical Review B, 99(17), doi: 10.1103/PhysRevB.99.174201.

Broadley, M. W., Kagi H., Burgess, R., Zedgenizov, D., Mikhail, S., Almayrac, M., Ragozin, A., Pomazansky, B., and Sumino H. (2018), Plume-lithosphere interaction, and the formation of fibrous diamonds, Geochemical Perspectives Letters, 8, 26-30, doi: 10.7185/geochemlet.1825.

Chanyshev, A. D., Litasov, K. D., Rashchenko, S. V., Sano-Furukawa A., Kagi H., Hattori T., Shatskiy, A. F., Dymshits, A. M., Sharygin, I. S., and Higo Y. (2018), High-Pressure-High-Temperature Study of Benzene: Refined Crystal Structure and New Phase Diagram up to 8 GPa and 923 K, Crystal Growth & Design, 18(5), 3016-3026, doi: 10.1021/acs.cgd.8b00125.

Ishii, Y., Komatsu K., Nakano S., Machida S., Hattori T., Sano-Furukawa A., and Kagi H. (2018), Pressure-induced stacking disorder in boehmite, Physical Chemistry Chemical Physics, 20(24), 16650-16656, doi: 10.1039/c8cp02565g.

Sano-Furukawa, A., Hattori T., Komatsu K., Kagi H., Nagai T., Molaison, J. J., M. dos Santos, A., and Tulk, C. A. (2018), Direct observation of symmetrization of hydrogen bond in delta-AlOOH under mantle conditions using neutron diffraction, Scientific Reports, 8, doi: 10.1038/s41598-018-33598-2.

Shinozaki, A., Komatsu K., Kagi H., Fujimoto C., Machida S., Sano-Furukawa A., and Hattori T. (2018), Behavior of intermolecular interactions in alpha-glycine under high pressure, Journal of Chemical Physics, 148(4), doi: 10.1063/1.5009980.

Suzuki, T., Okada H., Nakagawa T., Komatsu K., Fujimoto C., Kagi H., and Matsuo Y. (2018), A fluorenylidene-acridane that becomes dark in color upon grinding - ground state mechanochromism by conformational change, Chemical Science, 9(2), 475-482, doi: 10.1039/c7sc03567e.

Ujiie, K., Saishu H., Fagereng A., Nishiyama N., Otsubo M., Masuyama H., and Kagi H. (2018), An Explanation of Episodic Tremor and Slow Slip Constrained by Crack-Seal Veins and Viscous Shear in Subduction Melange, Geophysical Research Letters, 45(11), 5371-5379, doi: 10.1029/2018gl078374.

Fukuyama, K., Ohtani E., Shibazaki Y., Kagi H., and Suzuki A. (2017), Stability field of phase Egg, AlSiO3OH at high pressure and high temperature: possible water reservoir in mantle transition zone, Journal of Mineralogical and Petrological Sciences, 112(1), 31-35,　doi: 10.2465/jmps.160719e.

Haba, M. K., Yamaguchi A., Kagi H., Nagao K., and Hidaka H. (2017), Trace element composition and U-Pb age of zircons from Estherville: Constraints on the timing of the metal-silicate mixing event on the mesosiderite parent body, Geochimica Et Cosmochimica Acta, 215, 76-91, doi: 10.1016/j.gca.2017.07.028.

Ito, K., Ujiie K., and Kagi H.(2017), Detection of increased heating and estimation of coseismic shear stress from Raman spectra of carbonaceous material in pseudotachylytes, Geophysical Research Letters, 44(4), 1749-1757, doi: 10.1002/2016gl072457.

Klotz, S., Komatsu K., Kagi H., Kunc K., Sano-Furukawa A., Machida S., and Hattori T. (2017), Bulk moduli and equations of state of ice VII and ice VIII, Physical Review B, 95(17), doi: 10.1103/PhysRevB.95.174111.

Maruyama, K., Kagi H., Komatsu K., Yoshino T., and Nakano S. (2017), Pressure-induced phase transitions of vaterite, a metastable phase of CaCO3, Journal of Raman Spectroscopy, 48(11), 1449-1453, doi: 10.1002/jrs.5162.

Shibano, Y., Takahata K., Kawano J., Watanabe T., Enomoto D., Kagi H., Kamiya N., and Yamamoto J. (2017), Raman spectroscopic determination of Sr/Ca ratios of calcite samples, Journal of Raman Spectroscopy, 48(12), 1755-1761, doi: 10.1002/jrs.5235.

Shinozaki, A., Kagi H., and Mimura K. (2017), Formation of amorphous hydrogenated carbon from compression of benzene, Journal of Physics: Conf. Series 950, 042057, doi: 10.1088/1742-6596/950/4/042057.

Takahashi, S., Kagi H., Fujimoto C., Shinozaki A., Gotou H., Nishida T., and Mimura K. (2017), Pressure-induced Freeze Concentration of Alanine Aqueous Solution as a Novel Field of Chemical Reaction, Chemistry Letters, 46(3), 334-337, doi: 10.1246/cl.160992.

Watanabe, M., Komatsu K., Noritake F., and Kagi H. (2017), Structural incorporation of MgCl2 into ice VII at room temperature, Japanese Journal of Applied Physics, 56(5), doi: 10.7567/jjap.56.05fb03.

Yamane, R., Komatsu K., and Kagi H. (2017), Note: Development of a new Bridgman-type high pressure cell for accurate dielectric measurements, Review of Scientific Instruments, 88(4), doi: 10.1063/1.4980154.

Iizuka-Oku R., Yagi T., Gotou H., Okuchi T., Hattori T., and Sano-Furukawa A. (2017), Hydrogenation of iron in the early stage of Earth’s evolution, Nature Communications, 8, 14096, doi: 10.1038/ncomms14096.

Kawakami T., Yamamoto T., Yata K., Ishii M., Watanabe Y., Mizumaki M., Kawamura N., Ishimatsu N., Takahashi H., Okada T., Yagi T., Kageyama H. (2017), Effect of Fe-site Substitution on Pressure-induced Spin Transition in SrFeO2, J. Phys. Soc. Jpn. 86, 124716, doi: 10.7566/jpsj.86.124716.

Kuwahara H., Gotou H., Shinmei T., Ogawa N., Yamaguchi A., Takahata A.,Sano Y., Yagi T., and Sugita S. (2017), High Pressure Experiments on Metal-Silicate Partitioning of Chlorine in a Magma Ocean: Implications for Terrestrial Chlorine Depletion. Geochemistry, Geophysics, Geosystems, 18, 3929-3945, doi: 10.1002/2017GC007159.

Saitoh H., Machida A., Sugimoto H., Yagi T. and Aoki K. (2017), *P-V-T *relation of the Fe-H system under hydrogen pressure of several gigapascals, Journal of Alloys and Compounds, 706, 520-525. https://doi.org/10.1016/j.jallcom.2017.02.209

Ishibashi, H., Kagi H., Odake S. , Ohfuji H. , and Kitawaki H. (2016), Relationships between textural and photoluminescence spectral features of carbonado (natural polycrystalline diamond), and implications for its origin, Geochemistry International, 54(10), 882-889, doi: 10.1134/s0016702916100050.

Kagi, H., Zedgenizov, D. A., Ohfuji H., and Ishibashi H. (2016), Micro- and nano-inclusions in a superdeep diamond from So Luiz, Brazil, Geochemistry International, 54(10), 834-838,　doi: 10.1134/s0016702916100062.

Klotz, S., Komatsu K. , Pietrucci F. , Kagi H., Ludl, A. A., Machida S. , Hattori T., Sano-Furukawa A., and Bove, L. E., (2016), Ice VII from aqueous salt solutions: From a glass to a crystal with broken H-bonds, Scientific Reports, 6, doi: 10.1038/srep32040.

Komatsu, K., Noritake F., Machida S., Sano-Furukawa A., Hattori T., Yamane R., and Kagi H. (2016), Partially ordered state of ice XV, Scientific Reports, 6, doi: 10.1038/srep28920.

Noguchi, N., Kubo T. , Durham, W. B., Kagi H. , and Shimizu I. (2016), Self-diffusion of polycrystalline ice I-h under confining pressure: Hydrogen isotope analysis using 2-D Raman imaging, Physics of the Earth and Planetary Interiors, 257, 40-47, doi: 10.1016j.pepi.2016.05.010.

Shinozaki, A., Kagi H. , Hirai H. , Ohfuji H. , Okada T. , Nakano S. , and Yagi T. (2016), Preferential dissolution of SiO2 from enstatite to H-2 fluid under high pressure and temperature, Physics and Chemistry of Minerals, 43(4), 277-285, doi: 10.1007/s00269-015-0792-3.

Shinozaki, A., Mimura K. , Nishida T. , Inoue T. , Nakano S. , and Kagi H.(2016), Stability and partial oligomerization of naphthalene under high pressure at room temperature, Chemical Physics Letters, 662, 263-267, doi: 10.1016/j.cplett.2016.09.042.

Tomiyama, S., Minami M. , Nakamura T. , Mimura K., and Kagi H.(2016), Changes of Chemical Structure and Composition of Charcoal by Radiocarbon Pretreatments: Decontamination by ABA and ABOx Treatments, Radiocarbon, 58(3), 565-581, doi: 10.1017/rdc.2016.29.

Zedgenizov, D. A., Ragozin, A. L., Kalinina, V. V., and Kagi H.(2016), The mineralogy of Ca-rich inclusions in sublithospheric diamonds, Geochemistry International, 54(10), 890-900, doi: 10.1134/s0016702916100116.

Homma Y., Kouketsu Y., Kagi H., Mikouchi T., and Yabuta H. (2015), Raman spectroscopic thermometry to carbonaceous materials in chondrites: Four-band fitting analysis and expansion of lower temperature limit, Journal of Mineralogical and Petrological Sciences, 110, 276-282, doi: 10.2465/jmps.150713a.

Komatsu K., Munakata K., Matsubayashi K., Uwatoko Y., Yokoyama Y., Sugiyama K., and Matsuda M. (2015), Zr-based bulk metallic glass as a cylinder material for high pressure apparatuses, High Pressure Research, 254-262, doi: 10.1080/08957959.2015.1041939.

Komatsu K., Shinozaki A., Machida S., Matsubayashi T., Watanabe M., Kagi H., Sano-Furukawa A., and Hattori T. (2015), Crystal structure of magnesium dichloride decahydrate determined by X-ray and neutron diffraction under high pressure, Acta Crystallographica. Section B: Structural Crystallography and Crystal Chemistry, 71, 74-80, doi: 10.1107/S205252061500027X.

Kurita K., Sekiba D., Harayama I., Chito K., Harada Y., Kiuchi H., Oshima M., Takagi S., Matsuo M., Sato R., Aoki K., and Orimo S. (2015), Multi-Phonon Excitations in Fe 2p RIXS on Mg2FeH6, Journal of Physical Society of Japan, 84, 043201(1)-(3), doi: 10.7566/JPSJ.84.043201.

Saitoh H., Machida A., Matsuoka T., and Aoki K.(2015), Phase diagram of the Eu-H system at high temperatures and high hydrogen pressures, Solid State Communications, 205, 24-27, doi: 10.1016/j.ssc.2014.12.019.

Shinozaki A., Kagi H., Hirai H., Ohfuji H., Okada T., Nakano S., and Yagi T. (2015), Preferential dissolution of SiO2 from enstatite to H2 fluid under high pressure and temperature, Physics and Chemistry of Minerals, doi: 10.1007/s00269-015-0792-3.

Takagi S., Iijima Y., Sato T., Saitoh H., Ikeda K., Otomo T., Miwa K., Ikeshoji T., Aoki K., and Orimo S.(2015), True Boundary for the Formation of Homoleptic Transition-Metal Hydride Complexes, *Angew. Chem. Int. Ed. *54, 5650-5653, doi: 10.1002/anie.201500792.

Yuryeva O.P., Rakhmanova M.I., Nadolinny V.A., Zedgenizov D.A., Shatsky V.S., Kagi H., and Komarovskikh (2015), The characteristic photoluminescence and EPR features of super deep diamonds (Sao-Luis, Brazil), Physics and Chemistry of Minerals, 42, 707-722, doi: 10.1007/s00269-015-0756-7.

Bull C.L., Johnson M.W., Hamidov H., Komatsu K., Guthrie M., Gutmann M.J., Loveday J.S., and Nelmes R.J. (2015), An improved method for calibrating time-of-flight Laue single-crystal neutron diffractometers, Journal of Applied Crystallography, 47, 974-983, doi: 10.1107/S1600576714006657.

Komatsu K., Shinozaki A., Machida S., Matsubayashi T., Watanabe M., Kagi H., Sano-Furukawa A., and Hattori T. (2015), Crystal structure of magnesium dichloride decahydrate determined by x-ray and neutron diffraction under high pressure, Acta Crystallographica Section B, 71, 74-80, doi: 10.1107/S205252061500027X.

Maruyama K., Kagi H., Inoue T., Ohfuji H., and Yoshino T. (2015), In situ observation of pressure-induced crystallization from amorphous calcium carbonate by time-resolved X-ray diffraction, Chemistry Letters, 44, 434-436, doi: 10.1246/cl.141062. (Editor’s Choice)

Hattori T., Sano-Furukawa A., Arima H., Komatsu K., Yamada A., Inamura Y., Nakatani T., Seto Y., Nagai T., Utsumi W., Iitaka T., Kagi H., Katayama Y., Inoue T., Otomo T., Suzuya K., Kamiyama T., Arai M., and Yagi T.(2015), Design and performance of high-pressure PLANET beamline at pulsed neutron source at J-PARC, Nuclear Inst. and Methods in Physics Research A, 780, 55-67, doi: 10.1016/j.nima.2015.01.059.

Zedgenizov D.A., Shatsky V.S., Panin A.V., Evtushenko O.V., Ragozin A.L., and Kagi H.(2015), Evidence for phase transitions in mineral inclusions in superdeep diamonds of the Sao Luiz deposit (Brazil), Russian Geology and Geophysics, 56, 296-305, doi: 10.1016/j.rgg.2015.01.021.

Mironov V.P., Rakevich A.L., Stepanov F.A., Emel’yanova A.S., Zedgenizov D.A., Shatsky V.S., Kagi H., and Martynovich E.F. (2015), Luminescence in diamonds of the Sao Luiz placer (Brazil), Russian Geology and Geophysics, 56, 729-736, doi: 10.1016/j.rgg.2015.04.004.

Fujimoto C., Shinozaki A., Mimura K., Nishida T., Gotou H., Komatsu K., and Kagi H. (2015), Pressure-induced oligomerization of alanine at 25 °C, Chemical Communications, 51, 13358-13361, doi: 10.1039/C5CC03665H.

Pippinger T., Miletich R., Merlini M., Lotti P., Schouwink P., Yagi T., Crichton W.A., and Hanfland M. (2015), Puzzling calcite‐III dimorphism: crystallography, high‐pressure behavior, and pathway of single‐crystal transitions, Physics and Chemistry of Minerals, 42, 29-43, doi: 10.1007/s00269-014-0696-7.

Matsukage K. N., Nishihara Y., Noritake F., Kawamura K., Tsujino N., Sakurai M., Higo Y., Nakajima J., Hasegawa A., Takahashi E. (2015), Elastic wave velocity anomalies of anorthite in subducting plate: In situ experiments, American Mineralogist, 100, 1856-1866, doi:10.2138/am-2015-5240, doi: 10.2138/am-2015-5240.

Noritake F., Kawamura K., Matsukage K. N. (2015), Elastic anomalies of anorhite: Molecular dynamics simulations, Physics of the Earth and Planetary Interior, 244, 32-41, doi: 10.1016/j.pepi.2015.05.002.

Noritake F., Kawamura K. (2015), The nature of Si-O-Si bridging via molecular orbital calculations, Journal of Computer Chemistry, Japan, doi: 10.2477/jccj.2015-0009.

Fujimoto C., Shinozaki A., Mimura K., Nishida T., Gotou H., Komatsu K. and Kagi H., (2015), Pressure-induced oligomerization of alanine at 25 °C, Chemical Communications, 51, 13358-13361, doi: 10.1039/C5CC03665H.

Zedgenizov D.A., Shatskiy A., Ragozin A.L., Kagi H. and Shatsky V.S. (2014), Merwinite in diamond from Sâo Luiz, Brazil: A new mineral of the Ca-rich mantle environment, American Mineralogist, 99, 547-550, doi: 10.2138/am.2014.4767.

Zedgenizov D.A., Kagi H., Shatsky V.S., and Ragozin A.L. (2014), Local variations of carbon isotopic composition in diamonds from Sao-Luis (Brazil): evidence for heterogeneous carbon reservoir in sublithospheric mantle, Chemical Geology, 363, 114-124, doi: 10.1016/j.chemgeo.2013.10.033.

Yamamoto J., Korenaga J., Hirano N., and Kagi H. (2014), Melt-rich lithosphere-asthenosphere boundary inferred from petit-spot volcanoes, Geology, 42, 967-970, doi: 10.1130/G35944.1.

Shinozaki A., Mimura K., Kagi H., Komatsu K., Noguchi N., and Gotou H. (2014), Pressure-induced oligomerization of benzene at room temperature as a precursory reaction of amorphization, Journal of Chemical Physics, 141, 084306, doi: 10.1063/1.4893870.

Shinozaki A., Kagi H., Noguchi N., Hirai H., Ohfuji H., Okada T, Nakano S., and Yagi T. (2014), Formation of SiH4 and H2O by the dissolution of quartz in H2 fluid under high pressure and temperature, American Mineralogist, 99, 1265-1269, doi: 10.2138/am.2014.4798.

Sano-Furukawa A., Hattori T., Arima H., Yamada A., Sabata S., Kondo M., Nakamura A., Kagi H. and Yagi T. (2014), Six-axis multi-anvil press for high-pressure, high-temperature neutron diffraction experiments, Review of Scientific Instruments, 85, 113905, doi: 10.1063/1.4901095.

Ragozin A.L., Zedgenizov D.A., Shatskii V.S., Orihashi Y., Agashev A.M., and Kagi H. (2014), U-Pb age of rutile from the eclogite xenolith of the Udachnaya kimberlite pipe, Doklady Earth Sciences, 457, 861-864, doi: 10.1134/S1028334X14070162.

Okada T., Iitaka T., Yagi T. and Aoki K. (2014), Electrical conductivity of ice VII. Scientific Reports, 4, 5778, doi: 10.1038/srep05778.

Noguchi T., Bridges J.C., Hicks L.J., Gurman S.J., Kimura M., Hashimoto T., Konno M., Bradley J.P., Okazaki R., Uesugi M., Yada T., Karouji Y., Abe M., Okada T., Mitsunari T., Nakamura T., and Kagi H., Mineralogy of four Itokawa particles collected from the first touchdown site, Earth, Planets and Space, 66, 124, doi: 10.1186/1880-5981-66-124.

Noguchi N., Komatsu K., Shinozaki A., Shinoda K., and Kagi H. (2014), Near-infrared spectra of H2O under high pressure and high temperature: Implications for a transition from proton tunneling to hopping states, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 133, 509-513, doi: 10.1016/j.saa.2014.06.024.

Nishio-Hamane D., Dekura H., Seto Y., and Yagi T. (2014), Theoretical and experimental evidence for the post-cotunnite phase transition in zirconia at high pressure, Physics and Chemistry of Minerals, doi: 10.1007/s00269-014-0728-3.

Matsunuma S., Kagi H., Komatsu K., Maruyama K. and Yoshino T.(2014), Doping incompatible elements into calcite through amorphous calcium carbonate, Crystal Growth & Design, 14, 5344-5348, doi: 10.1021/cg500953h.

Kouketsu Y., Nishiyama T., Ikeda T., and Enami M. (2014), Evaluation of residual pressure in an inclusion-host system using negative frequency shift of quartz Raman spectra, American Mineralogist, 99, 433-442, doi: 10.2138/am.2014.4427.

Kouketsu Y., Mizukami T., Mori H., Endo S., Aoya M., Hara H., Nakamura D., and Wallis S. (2014), A new approach to develop the Raman carbonaceous material geothermometer for low-grade metamorphism using peak width, Island Arc, 23, 33-50, doi: 10.1111/iar.12057.

Kouketsu Y., Enami M., Mouri T., Okamura M., and Sakurai T. (2014), Composite metamorphic history recorded in garnet porphyroblasts of Sambagawa metasediments in the Besshi region, central Shikoku, southwest Japan, Island Arc, 23, 263-280, doi: 10.1111/iar.12075.

Komatsu K., Klotz S., Shinozaki A., Iizuka R., Bove L.E., and Kagi H.(2014), Performance of ceramic anvils for high pressure neutron scattering, High Pressure Research, 34, 494-499, doi: 10.1080/08957959.2014.986476.

Kimura T., Kuwayama Y., and Yagi T. (2014), Melting temperatures of H2O up to 72 GPa measured in a diamond anvil cell using CO2 laser heating technique, The Journal of Chemical Physics, 140, 074501, doi: 10.1063/1.4865252.

Kameda J., Kouketsu Y., Shimizu M., Yamaguchi A., Hamada Y., Hamahashi M., Koge H., Fukuchi R., Ikeda M., Kogure T., and Kimura G. (2014), The influence of organic-rich shear zones on pelagic sediment deformation and seismogenesis in a subduction zone, Journal of Mineralogical and Petrological Sciences, 109, 228-238, doi: 10.2465/jmps.140403.

Iizuka R., Komatsu K., Kagi H., Nagai T., Sano-Furukawa A., Hattori T., Gotou H., and Yagi T.(2014), Phase transitions and hdrogen bonding in deuterated calcium hydroxide: High-pressure and high-temperature neutron diffraction Measurements, Journal of Solid State Chemistry, 218, 95-102, doi: 10.1016/j.jssc.2014.06.010.

Cheng J., Matsubayashi K., Nagasaki S., Hisada A., Hirayama T., Hedo M., Kagi H., and Uwatoko Y. (2014), Integrated-fin gasket for Palm cubic anvil high pressure apparatus, Review of Scientific Instruments, 85, 093907, doi: 10.1063/1.4896473.

Abduriyim A., Kamegata N., Noguchi N., Kagi H., Sutherland F.L., and Coldham T. (2014), Residual pressure distribution and visualization of mineral inclusions in corundum: application of photoluminescence spectroscopy in relation to sapphires from New England, New South Wales, Australia, The Australian Gemologist, 25, 245-254.

Iizuka R., Yagi T., Komatsu K., Gotou H., Tsuchiya T., Kusaba K., and Kagi H. (2013), Crystal structure of the high-pressure phase of calcium hydroxide, portlandite: In situ powder and single-crystal X-ray diffraction study, American Mineralogist, 98, 1421-1428, doi: 10.2138/am.2013.4386.

Kagi H., Odake S., Ishibashi H., Shozugawa K., Matsuo M., Satake W., and Mikouchi T. (2013), Oxygen fugacity and valence of chromium in ferropericlase: Can Cr2+ be a redox indicator for the deep mantle?, Journal of Mineralogical and Petrological Sciences, 108, 172-177, doi: 10.2465/jmps.121022f.

Matsumoto T., Maruoka T., Shimoda G., Obata H., Kagi H., Suzuki K., Yamamoto K., Mitsuguchi T., Hagino K., Tomioka N., Sambandam C., Brummer D., Klaus P.M., and Aggarwal P. (2013), Tritium in Japanese precipitation following the March 2011 Fukusima Daiichi Nuclear Plant Accident, Science of the Total Environment, 445, 365-370, doi: 10.1016/j.scitotenv.2012.12.069.

Komatsu K., Moriyama M., Koizumi T., Nakayama K., Kagi H., Abe J., and Harjo S. (2013), Development of a new P-T controlling system for neutron scattering experiments, High Pressure Research, 33, 208-213, doi: 10.1080/08957959.2012.762914.

Noguchi N., Abduriyim A., Shimizu I., Kamegata N., Odake S., and Kagi H. (2013), Imaging of internal stress around a mineral inclusion in a sapphire crystal: application of micro-Raman and photoluminescence spectroscopy, Journal of Raman Spectroscopy, 44, 147-154, doi: 10.1002/jrs.4161.

Shinozaki. A., Kagi H. and Noguchi N. (2013), In-situ spectroscopic observations of pressure-induced condensation of trimethylsilanol and behavior of dehydrated molecular water, Chemical Physics Letters, 574, 66-70, doi: 10.1016/j.cplett.2013.04.073.

Shinozaki A., Hirai H., Ohfuji H., Okada T., Machida S and Yagi T. (2013), Influence of H2 fluid on the stability and dissolution of Mg2SiO4 forsterite under high pressure and high temperature, American Mineralogist, 98, 1604-1609, doi: 10.2138/am.2013.4434.