Veröffentlichungen "Ishii, Takayuki"

2024

Ishii, Takayuki ; Criniti, Giacomo ; Purevjav, Narangoo ; Katsura, Tomoo ; Ohtani, Eiji:
Hydrogen partitioning between stishovite and hydrous phase δ : implications for water cycle and distribution in the lower mantle.
In: Progress in Earth and Planetary Science. Bd. 11 (2024) Heft 1 . - 10.
ISSN 2197-4284
DOI: https://doi.org/10.1186/s40645-024-00615-0

Purevjav, Narangoo ; Fei, Hongzhan ; Ishii, Takayuki ; Criniti, Giacomo ; Lin, Yanhao ; Mao, Ho-Kwang ; Katsura, Tomoo:
Temperature Dependence of H₂O Solubility in Al-Free Stishovite.
In: Geophysical Research Letters. Bd. 51 (2024) Heft 3 . - e2023GL104029.
ISSN 1944-8007
DOI: https://doi.org/10.1029/2023GL104029

2023

Ishii, Takayuki ; Frost, Daniel J. ; Kim, Eun Jeong ; Chanyshev, Artem ; Nishida, Keisuke ; Wang, Biao ; Ban, Rintaro ; Xu, Jianing ; Liu, Jin ; Su, Xiaowan ; Higo, Yuji ; Tange, Yoshinori ; Mao, Ho-kwang ; Katsura, Tomoo:
Buoyancy of slabs and plumes enhanced by curved post-garnet phase boundary.
In: Nature Geoscience. Bd. 16 (2023) Heft 9 . - S. 828-832.
ISSN 1752-0908
DOI: https://doi.org/10.1038/s41561-023-01244-w

Koemets, Iuliia ; Wang, Biao ; Koemets, Egor ; Ishii, Takayuki ; Liu, Zhaodong ; McCammon, Catherine ; Chanyshev, Artem ; Katsura, Tomoo ; Hanfland, Michael ; Chumakov, Alexander ; Dubrovinsky, Leonid:
Crystal chemistry and compressibility of Fe₀.₅Mg₀.₅Al₀.₅Si₀.₅O₃ and FeMg₀.₅Si₀.₅O₃ silicate perovskites at pressures up to 95 GPa.
In: Frontiers in Chemistry. Bd. 11 (2023) . - 1258389.
ISSN 2296-2646
DOI: https://doi.org/10.3389/fchem.2023.1258389

Chanyshev, Artem ; Fei, Hongzhan ; Bondar, Dmitry ; Wang, Biao ; Liu, Zhaodong ; Ishii, Takayuki ; Farla, Robert ; McCammon, Catherine ; Katsura, Tomoo:
Ferric Iron Substitution Mechanism in Bridgmanite under SiO₂-Saturated Conditions at 27 GPa.
In: ACS Earth and Space Chemistry. Bd. 7 (2023) Heft 2 . - S. 471-478.
ISSN 2472-3452
DOI: https://doi.org/10.1021/acsearthspacechem.2c00326

Criniti, Giacomo ; Ishii, Takayuki ; Kurnosov, Alexander ; Glazyrin, Konstantin ; Boffa Ballaran, Tiziana:
High-pressure phase transition and equation of state of hydrous Al-bearing silica.
In: American Mineralogist. Bd. 108 (2023) Heft 8 . - S. 1558-1568.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2022-8546

Siersch, Nicki C. ; Criniti, Giacomo ; Kurnosov, Alexander ; Boffa Ballaran, Tiziana ; Liu, Zhaodong ; Ishii, Takayuki ; Frost, Daniel J. ; Yu, Tony ; Wang, Yanbin:
The influence of Al₂O₃ on the structural properties of MgSiO₃ akimotoite.
In: American Mineralogist. Bd. 108 (2023) Heft 1 . - S. 100-109.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2022-8257

Ishii, Takayuki ; McCammon, Catherine ; Katsura, Tomoo:
Iron and aluminum substitution mechanism in the perovskite phase in the system MgSiO₃-FeAlO₃-MgO.
In: American Mineralogist. Bd. 108 (2023) Heft 4 . - S. 738-743.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2022-8457

Woodland, Alan B. ; Uenver-Thiele, Laura ; Boffa Ballaran, Tiziana ; Miyajima, Nobuyoshi ; Rosbach, Kevin ; Ishii, Takayuki:
Stability of Fe₅O₆ and its relation to other Fe-Mg-oxides at high pressures and temperatures.
In: American Mineralogist. Bd. 108 (2023) Heft 1 . - S. 140-149.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2022-8370

Criniti, Giacomo ; Ishii, Takayuki ; Kurnosov, Alexander ; Glazyrin, Konstantin ; Husband, Rachel J. ; Boffa Ballaran, Tiziana:
Structure and compressibility of Fe-bearing Al-phase D.
In: American Mineralogist. Bd. 108 (2023) Heft 9 . - S. 1764-1772.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2022-8559

Ishii, Takayuki ; Criniti, Giacomo ; Wang, Xiaoyu ; Glazyrin, Konstantin ; Boffa Ballaran, Tiziana:
Synthesis and structural analysis of CaFe₂O₄-type single crystals in the NaAlSiO₄-MgAl₂O₄-Fe₃O₄ system.
In: American Mineralogist. Bd. 108 (2023) Heft 1 . - S. 217-221.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2022-8748

2022

Maitani, Shuhou ; Sinmyo, Ryosuke ; Ishii, Takayuki ; Kawaguchi, Saori I. ; Hirao, Naohisa:
The electrical conductivity of Fe₄O₅, Fe₅O₆, and Fe₇O₉ up to 60 GPa.
In: Physics and Chemistry of Minerals. Bd. 49 (3 Mai 2022) Heft 5 . - 11.
ISSN 1432-2021
DOI: https://doi.org/10.1007/s00269-022-01188-4

Ishii, Takayuki ; Ohtani, Eiji ; Shatskiy, Anton:
Aluminum and hydrogen partitioning between bridgmanite and high-pressure hydrous phases : Implications for water storage in the lower mantle.
In: Earth and Planetary Science Letters. Bd. 583 (1 April 2022) . - 117441.
ISSN 0012-821X
DOI: https://doi.org/10.1016/j.epsl.2022.117441

Koemets, Iuliia ; Ishii, Takayuki ; Hanfland, Michael ; Dubrovinsky, Leonid:
Equations of state of α-SiC (6H) and βʹ-Mg₂Si₁.₁ from single-crystal X-ray diffraction data and novel high-pressure magnesium silicide Mg₂Si₇.
In: Physics and Chemistry of Minerals. Bd. 49 (2022) Heft 5 . - 12.
ISSN 1432-2021
DOI: https://doi.org/10.1007/s00269-022-01189-3

Meier, Thomas ; Trybel, Florian ; Khandarkhaeva, Saiana ; Laniel, Dominique ; Ishii, Takayuki ; Aslandukova, Alena ; Dubrovinskaia, Natalia ; Dubrovinsky, Leonid:
Structural independence of hydrogen-bond symmetrisation dynamics at extreme pressure conditions.
In: Nature Communications. Bd. 13 (2022) Heft 1 . - 3042.
ISSN 2041-1723
DOI: https://doi.org/10.1038/s41467-022-30662-4

Chanyshev, Artem ; Ishii, Takayuki ; Bondar, Dmitry ; Bhat, Shrikant ; Kim, Eun Jeong ; Farla, Robert ; Nishida, Keisuke ; Liu, Zhaodong ; Wang, Lin ; Nakajima, Ayano ; Yan, Bingmin ; Tang, Hu ; Chen, Zhen ; Higo, Yuji ; Tange, Yoshinori ; Katsura, Tomoo:
Depressed 660-km discontinuity caused by akimotoite–bridgmanite transition.
In: Nature. Bd. 601 (2022) . - S. 69-73.
ISSN 1476-4687
DOI: https://doi.org/10.1038/s41586-021-04157-z

Farla, Robert ; Bhat, Shrikant ; Sonntag, Stefan ; Chanyshev, Artem ; Ma, Shuailing ; Ishii, Takayuki ; Liu, Zhaodong ; Néri, Adrien ; Nishiyama, Norimasa ; Faria, Guilherme Abreu ; Wroblewski, Thomas ; Schulte-Schrepping, Horst ; Drube, Wolfgang ; Seeck, Oliver ; Katsura, Tomoo:
Extreme conditions research using the large-volume press at the P61B endstation, PETRA III.
In: Journal of Synchrotron Radiation. Bd. 29 (2022) Heft 2 . - S. 409-423.
ISSN 1600-5775
DOI: https://doi.org/10.1107/S1600577522001047

Ishii, Takayuki ; Miyajima, Nobuyoshi ; Criniti, Giacomo ; Hu, Qingyang ; Glazyrin, Konstantin ; Katsura, Tomoo:
High pressure-temperature phase relations of basaltic crust up to mid-mantle conditions.
In: Earth and Planetary Science Letters. Bd. 584 (2022) . - 117472.
ISSN 0012-821X
DOI: https://doi.org/10.1016/j.epsl.2022.117472

Hsieh, Wen-Pin ; Marzotto, Enrico ; Ishii, Takayuki ; Dubrovinsky, Leonid ; Aslandukova, Alena ; Criniti, Giacomo ; Tsao, Yi-Chi ; Lin, Chun-Hung ; Tsuchiya, Jun ; Ohtani, Eiji:
Low Thermal Conductivity of Hydrous Phase D Leads to a Self-Preservation Effect Within a Subducting Slab.
In: Journal of Geophysical Research: Solid Earth. Bd. 127 (2022) Heft 6 . - e2022JB024556.
ISSN 2169-9356
DOI: https://doi.org/10.1029/2022JB024556

Ishii, Takayuki ; Chanyshev, Artem ; Katsura, Tomoo:
A New Approach Determining a Phase Transition Boundary Strictly Following a Definition of Phase Equilibrium : An Example of the Post-Spinel Transition in Mg₂SiO₄ System.
In: Minerals. Bd. 12 (2022) Heft 7 . - 820.
ISSN 2075-163X
DOI: https://doi.org/10.3390/min12070820

Dominijanni, Serena ; McCammon, Catherine ; Ohtani, Eiji ; Ikuta, D. ; Sakamaki, Tatsuya ; Ishii, Takayuki ; Criniti, Giacomo ; Dubrovinsky, Leonid ; Khandarkhaeva, Saiana ; Fedotenko, Timofey ; Glazyrin, Konstantin ; Uchiyama, H. ; Fukui, Hiroshi ; Baron, Alfred Q. R.:
Sound Velocity Measurements of B2-Fe-Ni-Si Alloy Under High Pressure by Inelastic X-Ray Scattering : Implications for the Composition of Earth's Core.
In: Geophysical Research Letters. Bd. 49 (2022) Heft 15 . - e2021GL096405.
ISSN 1944-8007
DOI: https://doi.org/10.1029/2021GL096405

Ishii, Takayuki ; Criniti, Giacomo ; Ohtani, Eiji ; Purevjav, Narangoo ; Fei, Hongzhan ; Katsura, Tomoo ; Mao, Ho-kwang:
Superhydrous aluminous silica phases as major water hosts in high-temperature lower mantle.
In: Proceedings of the National Academy of Sciences of the United States of America. Bd. 119 (2022) Heft 44 . - e2211243119.
ISSN 1091-6490
DOI: https://doi.org/10.1073/pnas.2211243119

2021

Ishii, Takayuki ; Ohtani, Eiji:
Dry metastable olivine and slab deformation in a wet subducting slab.
In: Nature Geoscience. Bd. 14 (24 Mai 2021) Heft 7 . - S. 526-530.
ISSN 1752-0908
DOI: https://doi.org/10.1038/s41561-021-00756-7

Satta, Niccolò ; Criniti, Giacomo ; Kurnosov, Alexander ; Boffa Ballaran, Tiziana ; Ishii, Takayuki ; Marquardt, Hauke:
High-Pressure Elasticity of δ-(Al,Fe)OOH Single Crystals and Seismic Detectability of Hydrous MORB in the Shallow Lower Mantle.
In: Geophysical Research Letters. Bd. 48 (2021) Heft 23 . - e2021GL094185.
ISSN 1944-8007
DOI: https://doi.org/10.1029/2021GL094185

Ishii, Takayuki ; Criniti, Giacomo ; Bykova, Elena ; Dubrovinsky, Leonid ; Katsura, Tomoo ; Arii, Hidekazu ; Kojitani, Hiroshi ; Akaogi, Masaki:
High-pressure syntheses and crystal structure analyses of a new low-density CaFe2O4-related and CaTi2O4-type MgAl2O4 phases.
In: American Mineralogist. Bd. 106 (2021) Heft 7 . - S. 1105-1112.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2021-7619

Meier, Thomas ; Aslandukova, Alena ; Trybel, Florian ; Laniel, Dominique ; Ishii, Takayuki ; Khandarkhaeva, Saiana ; Dubrovinskaia, Natalia ; Dubrovinsky, Leonid:
In situ high-pressure nuclear magnetic resonance crystallography in one and two dimensions.
In: Matter and Radiation at Extremes. Bd. 6 (2021) Heft 6 . - 068402.
ISSN 2468-080X
DOI: https://doi.org/10.1063/5.0065879

McGuire, Chris ; Komabayashi, Tetsuya ; Thompson, Samuel ; Bromiley, Geoffrey ; Ishii, Takayuki ; Greenberg, Eran ; Prakapenka, Vitali B.:
P-V-T measurements of Fe3C to 117 GPa and 2100 K : Implications for stability of Fe3C phase at core conditions.
In: American Mineralogist. Bd. 106 (2021) Heft 8 . - S. 1349-1359.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2021-7581

Bondar, Dmitry ; Fei, Hongzhan ; Withers, Anthony ; Ishii, Takayuki ; Chanyshev, Artem ; Katsura, Tomoo:
A simplified rapid-quench multi-anvil technique.
In: Review of Scientific Instruments. Bd. 92 (2021) . - 113902.
ISSN 1089-7623
DOI: https://doi.org/10.1063/5.0062525

Buchen, Johannes ; Sturhahn, Wolfgang ; Ishii, Takayuki ; Jackson, Jennifer M.:
Vibrational anisotropy of δ-(Al,Fe)OOH single crystals as probed by nuclear resonant inelastic X-ray scattering.
In: European Journal of Mineralogy. Bd. 33 (2021) Heft 4 . - S. 485-502.
ISSN 1617-4011
DOI: https://doi.org/10.5194/ejm-33-485-2021

Chanyshev, Artem ; Bondar, Dmitry ; Fei, Hongzhan ; Purevjav, Narangoo ; Ishii, Takayuki ; Nishida, Keisuke ; Bhat, Shrikant ; Farla, Robert ; Katsura, Tomoo:
Determination of phase relations of the olivine–ahrensite transition in the Mg₂SiO₄–Fe₂SiO₄ system at 1740 K using modern multi-anvil techniques.
In: Contributions to Mineralogy and Petrology. Bd. 176 (2021) . - 77.
ISSN 1432-0967
DOI: https://doi.org/10.1007/s00410-021-01829-x

Siersch, Nicki C. ; Kurnosov, Alexander ; Criniti, Giacomo ; Ishii, Takayuki ; Boffa Ballaran, Tiziana ; Frost, Daniel J.:
The elastic properties and anisotropic behavior of MgSiO₃ akimotoite at transition zone pressures.
In: Physics of the Earth and Planetary Interiors. Bd. 320 (2021) . - 106786.
ISSN 1872-7395
DOI: https://doi.org/10.1016/j.pepi.2021.106786

Xie, Longjian ; Chanyshev, Artem ; Ishii, Takayuki ; Bondar, Dmitry ; Nishida, Keisuke ; Chen, Zhen ; Bhat, Shrikant ; Farla, Robert ; Higo, Yuji ; Tange, Yoshinori ; Su, Xiaowan ; Yan, BingMin ; Ma, Shuailin ; Katsura, Tomoo:
Simultaneous generation of ultrahigh pressure and temperature to 50 GPa and 3300 K in multi-anvil apparatus.
In: Review of Scientific Instruments. Bd. 92 (2021) . - 103902.
ISSN 1089-7623
DOI: https://doi.org/10.1063/5.0059279

Tang, Hu ; Yuan, Xiaohong ; Cheng, Yong ; Fei, Hongzhan ; Liu, Fuyang ; Liang, Tao ; Zeng, Zhidan ; Ishii, Takayuki ; Wang, Ming-Sheng ; Katsura, Tomoo ; Sheng, Howard ; Gou, Huiyang:
Synthesis of paracrystalline diamond.
In: Nature. Bd. 599 (2021) . - S. 605-610.
ISSN 1476-4687
DOI: https://doi.org/10.1038/s41586-021-04122-w

2020

Marzotto, Enrico ; Hsieh, Wen-Pin ; Ishii, Takayuki ; Chao, Keng-Hsien ; Golabek, Gregor J. ; Thielmann, Marcel ; Ohtani, Eiji:
Effect of Water on Lattice Thermal Conductivity of Ringwoodite and Its Implications for the Thermal Evolution of Descending Slabs.
In: Geophysical Research Letters. Bd. 47 (2020) Heft 13 . - e2020GL087607.
ISSN 1944-8007
DOI: https://doi.org/10.1029/2020GL087607

Hsieh, Wen-Pin ; Ishii, Takayuki ; Chao, Keng-Hsien ; Tsuchiya, Jun ; Deschamps, Frédéric ; Ohtani, Eiji:
Spin Transition of Iron in δ-(Al,Fe)OOH Induces Thermal Anomalies in Earth's Lower Mantle.
In: Geophysical Research Letters. Bd. 47 (2020) Heft 4 . - e2020GL087036.
ISSN 1944-8007
DOI: https://doi.org/10.1029/2020GL087036

Liu, Zhaodong ; McCammon, Catherine ; Wang, Biao ; Dubrovinsky, Leonid ; Ishii, Takayuki ; Bondar, Dmitry ; Nakajima, Ayano ; Tange, Yoshinori ; Higo, Yuji ; Cui, Tian ; Liu, Bingbing ; Katsura, Tomoo:
Stability and Solubility of the FeAlO₃ Component in Bridgmanite at Uppermost Lower Mantle Conditions.
In: Journal of Geophysical Research: Solid Earth. Bd. 125 (2020) Heft 2 . - e2019JB018447.
ISSN 2169-9356
DOI: https://doi.org/10.1029/2019JB018447

Ishii, Takayuki ; Miyajima, Nobuyoshi ; Sinmyo, Ryosuke ; Kojitani, Hiroshi ; Mori, Daisuke ; Inaguma, Yoshiyuki ; Akaogi, Masaki:
Discovery of New-Structured Post-Spinel MgFe₂O₄ : Crystal Structure and High-Pressure Phase Relations.
In: Geophysical Research Letters. Bd. 47 (2020) Heft 6 . - e2020GL087490.
ISSN 1944-8007
DOI: https://doi.org/10.1029/2020GL087490

2018

Ishii, Takayuki ; Huang, Rong ; Fei, Hongzhan ; Koemets, Iuliia ; Liu, Zhaodong ; Maeda, Fumiya ; Yuan, Liang ; Wang, Lin ; Druzhbin, Dmitry ; Yamamoto, Takafumi ; Bhat, Shrikant ; Farla, Robert ; Kawazoe, Takaaki ; Tsujino, Noriyoshi ; Kulik, Eleonora ; Higo, Yuji ; Tange, Yoshinori ; Katsura, Tomoo:
Complete agreement of the post-spinel transition with the 660-km seismic discontinuity.
In: Scientific Reports. Bd. 8 (2018) . - 6358.
ISSN 2045-2322
DOI: https://doi.org/10.1038/s41598-018-24832-y

Ishii, Takayuki ; Sakai, Tsubasa ; Kojitani, Hiroshi ; Mori, Daisuke ; Inaguma, Yoshiyuki ; Matsushita, Yoshitaka ; Yamaura, Kazunari ; Akaogi, Masaki:
High-Pressure Phase Relations and Crystal Structures of Postspinel Phases in MgV₂O₄, FeV₂O₄, and MnCr₂O₄ : Crystal Chemistry of AB₂O₄ Postspinel Compounds.
In: Inorganic Chemistry. Bd. 57 (2018) Heft 11 . - S. 6648-6657.
ISSN 1520-510X
DOI: https://doi.org/10.1021/acs.inorgchem.8b00810

Akaogi, Masaki ; Kawahara, Airi ; Kojitani, Hiroshi ; Yoshida, Kazuaki ; Anegawa, Yuki ; Ishii, Takayuki:
High-pressure phase transitions in MgCr₂O₄·Mg₂SiO₄ composition : Reactions between olivine and chromite with implications for ultrahigh-pressure chromitites.
In: American Mineralogist. Bd. 103 (2018) Heft 1 . - S. 161-170.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2018-6135

Ishii, Takayuki ; Kojitani, Hiroshi ; Akaogi, Masaki:
Phase relations and mineral chemistry in pyrolitic mantle at 1600–2200°C under pressures up to the uppermost lower mantle : Phase transitions around the 660-km discontinuity and dynamics of upwelling hot plumes.
In: Physics of the Earth and Planetary Interiors. Bd. 274 (2018) . - S. 127-137.
ISSN 1872-7395
DOI: https://doi.org/10.1016/j.pepi.2017.10.005

Ishii, Takayuki ; Uenver-Thiele, Laura ; Woodland, Alan B. ; Alig, Edith ; Boffa Ballaran, Tiziana:
Synthesis and crystal structure of Mg-bearing Fe9O11 : New insight in the complexity of Fe-Mg oxides at conditions of the deep upper mantle.
In: American Mineralogist. Bd. 103 (2018) Heft 11 . - S. 1873-1876.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2018-6646

2017

Akaogi, Masaki ; Abe, K. ; Yusa, H. ; Ishii, Takayuki ; Tajima, T. ; Kojitani, H. ; Mori, D. ; Inaguma, Y.:
High-pressure high-temperature phase relations in FeTiO₃ up to 35 GPa and 1600 °C.
In: Physics and Chemistry of Minerals. Bd. 44 (2017) Heft 1 . - S. 63-73.
ISSN 1432-2021
DOI: https://doi.org/10.1007/s00269-016-0836-3

Liu, Zhaodong ; Nishi, Masayuki ; Ishii, Takayuki ; Fei, Hongzhan ; Miyajima, Nobuyoshi ; Boffa Ballaran, Tiziana ; Ohfuji, Hiroaki ; Sakai, Takeshi ; Wang, Lin ; Shcheka, Svyatoslav ; Arimoto, Takeshi ; Tange, Yoshinori ; Higo, Yuji ; Irifune, Tetsuo ; Katsura, Tomoo:
Phase Relations in the System MgSiO₃-Al₂O₃ up to 2300 K at Lower Mantle Pressures.
In: Journal of Geophysical Research: Solid Earth. Bd. 122 (2017) Heft 10 . - S. 7775-7788.
ISSN 2169-9356
DOI: https://doi.org/10.1002/2017JB014579

Ishii, Takayuki ; Yamazaki, Daisuke ; Tsujino, Noriyoshi ; Xu, Fang ; Liu, Zhaodong ; Kawazoe, Takaaki ; Yamamoto, Takafumi ; Druzhbin, Dmitry ; Wang, Lin ; Higo, Yuji ; Tange, Yoshinori ; Yoshino, Takashi ; Katsura, Tomoo:
Pressure generation to 65 GPa in a Kawai-type multi-anvil apparatus with tungsten carbide anvils.
In: High Pressure Research. Bd. 37 (2017) Heft 4 . - S. 507-515.
ISSN 1477-2299
DOI: https://doi.org/10.1080/08957959.2017.1375491

Liu, Zhaodong ; Ishii, Takayuki ; Katsura, Tomoo:
Rapid decrease of MgAlO₂.₅ component in bridgmanite with pressure.
In: Geochemical Perspectives Letters. Bd. 5 (2017) . - S. 12-18.
ISSN 2410-3403
DOI: https://doi.org/10.7185/geochemlet.1739

Ishii, Takayuki ; Tsujino, Noriyoshi ; Arii, Hidekazu ; Fujino, Kiyoshi ; Miyajima, Nobuyoshi ; Kojitani, Hiroshi ; Kunimoto, Takehiro ; Akaogi, Masaki:
A shallow origin of so-called ultrahigh-pressure chromitites, based on single-crystal X-ray structure analysis of the high-pressure Mg2Cr2O5 phase, with modified ludwigite-type structure.
In: American Mineralogist. Bd. 102 (2017) Heft 10 . - S. 2113-2118.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2017-6050

Rout, Surya S. ; Heck, Philipp R. ; Zaluzec, Nestor J. ; Ishii, Takayuki ; Wen, Jianguo ; Miller, Dean J. ; Schmitz, Birger:
Shocked chromites in fossil L chondrites : A Raman spectroscopy and transmission electron microscopy study.
In: Meteoritics & Planetary Science. Bd. 52 (2017) Heft 9 . - S. 1776-1796.
ISSN 1945-5100
DOI: https://doi.org/10.1111/maps.12887

Kawazoe, Takaaki ; Ohira, Itaru ; Ishii, Takayuki ; Boffa Ballaran, Tiziana ; McCammon, Catherine ; Suzuki, Akio ; Ohtani, Eiji:
Single crystal synthesis of δ-(Al,Fe)OOH.
In: American Mineralogist. Bd. 102 (2017) Heft 9 . - S. 1953-1956.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2017-6153

Ishii, Takayuki ; Sinmyo, Ryosuke ; Komabayashi, Tetsuya ; Boffa Ballaran, Tiziana ; Kawazoe, Takaaki ; Miyajima, Nobuyoshi ; Hirose, Kei ; Katsura, Tomoo:
Synthesis and crystal structure of LiNbO₃-type Mg₃Al₂Si₃O₁₂ : A possible indicator of shock conditions of meteorites.
In: American Mineralogist. Bd. 102 (2017) Heft 9 . - S. 1947-1952.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am-2017-6027

2016

Ishii, Takayuki ; Shi, L. ; Huang, Rong ; Tsujino, N. ; Druzhbin, Dmitry ; Myhill, Robert ; Li, Y. ; Wang, Lin ; Yamamoto, T. ; Miyajima, Nobuyoshi ; Kawazoe, Takaaki ; Nishiyama, N. ; Higo, Y. ; Tange, Y. ; Katsura, Tomoo:
Generation of pressures over 40 GPa using Kawai-type multi-anvil press with tungsten carbide anvils.
In: Review of Scientific Instruments. Bd. 87 (2016) Heft 2 . - 024501.
ISSN 1089-7623
DOI: https://doi.org/10.1063/1.4941716