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Hiroyuki Kagi

Hiroyuki Kagi

D-Index & Metrics

Environmental Sciences

D-Index
44
Citations
6772
World Ranking
6809
National Ranking
128

Overview

Hiroyuki Kagi is affiliated with the University of Tokyo in Japan and specializes in materials science and earth and planetary sciences. Their research outputs encompass a variety of topics within these fields, focusing extensively on materials chemistry and geophysics as well as contributions to astronomy, inorganic chemistry, and biomaterials.

The scientist's recent publications cover a range of subjects predominantly related to high-pressure geophysics, crystallization processes, and geological and geochemical analysis. Notable papers include:

  • Experimental evidence for the existence of a second partially-ordered phase of ice VI (2021, Nature Communications)
  • Deep microbial proliferation at the basalt interface in 33.5-104 million-year-old oceanic crust (2020, Communications Biology)
  • Incorporation of Incompatible Strontium and Barium Ions into Calcite (CaCO3) through Amorphous Calcium Carbonate (2020, Minerals)
  • Anomalous hydrogen dynamics of the ice VII-VIII transition revealed by high-pressure neutron diffraction (2020, Proceedings of the National Academy of Sciences)
  • Hydrogen bond symmetrisation in D2O ice observed by neutron diffraction (2024, Nature Communications)

The primary research topics addressed by their work are:

  • High-pressure geophysics and materials
  • Crystallization and solubility studies
  • X-ray diffraction in crystallography
  • Geological and geochemical analysis
  • Earthquake and tectonic studies
  • Methane hydrates and related phenomena
  • Calcium carbonate crystallization and inhibition

Frequent co-authors who collaborate with Hiroyuki Kagi include:

  • Kazuki Komatsu
  • Takanori Hattori
  • Asami Sano-Furukawa
  • Shinichi Machida
  • Stefan Klotz

Their research findings have appeared in several publication venues, with multiple works in:

  • The Cambridge Structural Database
  • Journal of Raman Spectroscopy
  • Nature Communications
  • American Mineralogist
  • Scientific Reports

Hiroyuki Kagi's contributions span various subfields focused on the chemical and physical behavior of materials under diverse conditions, particularly examining the structure and dynamics of water ices and carbonate minerals under high pressure. Their interdisciplinary approach integrates materials chemistry with geophysics, supporting studies relevant to earth and planetary processes.

Best Publications

  • Direct observation of tetravalent cerium in ferromanganese nodules and crusts by X-ray-absorption near-edge structure (XANES)

    Yoshio Takahashi;Hiroshi Shimizu;Akira Usui;Hiroyuki Kagi

  • Changes in the structure of water deduced from the pressure dependence of the Raman OH frequency

    Tatsuhiko Kawamoto;Shukichi Ochiai;Hiroyuki Kagi

  • Mg and Fe-rich carbonate–silicate high-density fluids in cuboid diamonds from the Internationalnaya kimberlite pipe (Yakutia)

    D.A. Zedgenizov;A.L. Ragozin;V.S. Shatsky;D. Araujo

  • Carbonatitic melts in cuboid diamonds from Udachnaya kimberlite pipe (Yakutia): evidence from vibrational spectroscopy

    D. A. Zedgenizov;H. Kagi;V. S. Shatsky;N. V. Sobolev

  • An Explanation of Episodic Tremor and Slow Slip Constrained by Crack-Seal Veins and Viscous Shear in Subduction Mélange

    Kohtaro Ujiie;Kohtaro Ujiie;Hanae Saishu;Åke Fagereng;Naoki Nishiyama

  • Micro-Raman Densimeter for CO2 Inclusions in Mantle-Derived Minerals

    Yoko Kawakami;Junji Yamamoto;Hiroyuki Kagi

  • High hydrogen solubility in Al-rich stishovite and water transport in the lower mantle

    Konstantin D. Litasov;Hiroyuki Kagi;Anton Shatskiy;Eiji Ohtani

  • Composition of trapped fluids in cuboid fibrous diamonds from the Udachnaya kimberlite: LAM-ICPMS analysis

    D.A. Zedgenizov;S. Rege;W.L. Griffin;H. Kagi

  • Design and performance of high-pressure PLANET beamline at pulsed neutron source at J-PARC

    T. Hattori;A. Sano-Furukawa;H. Arima;K. Komatsu

  • Fossil pressures of fluid inclusions in mantle xenoliths exhibiting rheology of mantle minerals: implications for the geobarometry of mantle minerals using micro-Raman spectroscopy

    Junji Yamamoto;Hiroyuki Kagi;Ichiro Kaneoka;Yong Lai

  • Proper understanding of down-shifted Raman spectra of natural graphite: Direct estimation of laser-induced rise in sample temperature

    Hiroyuki Kagi;Ikari Tsuchida;Masao Wakatsuki;Kazuya Takahashi

  • Integrated-fin gasket for palm cubic-anvil high pressure apparatus.

    J.-G. Cheng;K. Matsubayashi;S. Nagasaki;A. Hisada

  • Change in compressibility of δ-AlOOH and δ-AlOOD at high pressure: A study of isotope effect and hydrogen-bond symmetrization

    Asami Sano-Furukawa;Asami Sano-Furukawa;Hiroyuki Kagi;Takaya Nagai;Satoshi Nakano

  • Local variations of carbon isotope composition in diamonds from São-Luis (Brazil): Evidence for heterogenous carbon reservoir in sublithospheric mantle

    D.A. Zedgenizov;D.A. Zedgenizov;H. Kagi;V.S. Shatsky;A.L. Ragozin;A.L. Ragozin

  • Extended Micro-Raman Densimeter for CO2 Applicable to Mantle-originated Fluid Inclusions

    Junji Yamamoto;Hiroyuki Kagi

  • High concentration of water in stishovite in the MORB system

    Jung In Chung;Jung In Chung;Hiroyuki Kagi

  • Diamond-graphite relationships in ultrahigh-pressure metamorphic rocks from the Kokchetav Massif, northern Kazakhstan

    Andrey V. Korsakov;Maria Perraki;Dmitry A. Zedgenizov;Luca Bindi

  • Evidence for subduction-related components in the subcontinental mantle from low 3He/4He and 40Ar/36Ar ratio in mantle xenoliths from Far Eastern Russia

    Junji Yamamoto;Ichiro Kaneoka;Shun'ichi Nakai;Hiroyuki Kagi

  • A new method for the determination of CeIII/CeIV ratios in geological materials; application for weathering, sedimentary and diagenetic processes

    Yoshio Takahashi;Hiroshi Shimizu;Hiroyuki Kagi;Hidekazu Yoshida

  • Tritium in Japanese precipitation following the March 2011 Fukushima Daiichi Nuclear Plant accident.

    Takuya Matsumoto;Teruyuki Maruoka;Gen Shimoda;Hajime Obata

  • Experimental alteration of molybdenite: evaluation of the Re–Os system, infrared spectroscopic profile and polytype

    Katsuhiko Suzuki;Hiroyuki Kagi;Masayuki Nara;Bokuichiro Takano

  • CHEMICAL PROPERTIES OF CENTRAL AFRICAN CARBONADO AND ITS GENETIC IMPLICATIONS

    Hiroyuki Kagi;Kazuya Takahashi;Hiroshi Hidaka;Akimasa Masuda

  • Evidence for ice VI as an inclusion in cuboid diamonds from high P-T near infrared spectroscopy

    H. Kagi;H. Kagi;R. Lu;P. Davidson;A. F. Goncharov

  • Hydrogen bonding interactions in phase A [Mg 7 Si 2 O 8 (OH) 6 ] at ambient and high pressure

    H. Kagi;J. B. Parise;H. Cho;G. R. Rossman

Frequent Co-Authors

Takehiko Yagi
Takehiko Yagi University of Tokyo
Vladislav S. Shatsky
Vladislav S. Shatsky Russian Academy of Sciences
Kohtaro Ujiie
Kohtaro Ujiie University of Tsukuba
Konstantin D. Litasov
Konstantin D. Litasov Institute for High Pressure Physics
Toru Inoue
Toru Inoue Hiroshima University
John B. Parise
John B. Parise Stony Brook University
Tetsuo Irifune
Tetsuo Irifune Ehime University
Eiji Ohtani
Eiji Ohtani Tohoku University
Shoji Arai
Shoji Arai Kanazawa University
Katsuhiko Suzuki
Katsuhiko Suzuki Japan Agency for Marine-Earth Science and Technology

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