World's Best Scientists 2026 revealed!

D-Index & Metrics

Materials Science

D-Index
60
Citations
15307
World Ranking
6965
National Ranking
374

Overview

Reiji Kumai is affiliated with the High Energy Accelerator Research Organization in Japan and specializes in the field of materials science. Their research focuses primarily on materials chemistry, with notable emphasis on electronic, optical, and magnetic materials, as well as polymers, plastics, and organic chemistry.

Their work covers several main topics, including:

  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Conducting Polymers and Applications
  • Organic Electronics and Photovoltaics
  • Perovskite Materials and Applications
  • Liquid Crystal Research Advancements
  • Crystallography and Molecular Interactions

Reiji Kumai has contributed to key scientific journals, frequently publishing in:

  • The Cambridge Structural Database
  • Journal of Materials Chemistry C
  • Chemical Science
  • Physical Review Materials
  • Journal of the Physical Society of Japan

Their recent papers include:

  • High-pressure phase diagrams of FeSe1−xTex: correlation between suppressed nematicity and enhanced superconductivity, 2021, Nature Communications
  • Emerging Disordered Layered-Herringbone Phase in Organic Semiconductors Unveiled by Electron Crystallography, 2021, Chemistry of Materials
  • Regioisomeric control of layered crystallinity in solution-processable organic semiconductors, 2020, Chemical Science
  • q=0 long-range magnetic order in centennialite CaCu3(OD)6Cl2·0.6D2O: A spin-½ perfect kagome antiferromagnet with J1−J2−Jd, 2020, Physical Review B
  • Effect of Alkyl Chain Length on Charge Transport Property of Anthracene-Based Organic Semiconductors, 2020, ACS Applied Materials & Interfaces

Reiji Kumai has collaborated extensively with several co-authors, including:

  • Seiji Tsuzuki
  • Tatsuo Hasegawa
  • Shunto Arai
  • Toshiki Higashino
  • Satoru Inoue

Their body of work demonstrates a strong engagement with structural databases and advanced crystallographic techniques applied to functional materials. This includes studies on organic semiconductors, magnetic materials, and superconductors, reflecting a multidisciplinary approach within materials chemistry and engineering fields.

Best Publications

  • Inkjet printing of single-crystal films

    Hiromi Minemawari;Toshikazu Yamada;Hiroyuki Matsui;Jun’ya Tsutsumi

  • Giant Rashba-type spin splitting in bulk BiTeI

    K. Ishizaka;Mohammad Saeed Bahramy;H. Murakawa;M. Sakano

  • Above-room-temperature ferroelectricity in a single-component molecular crystal

    Sachio Horiuchi;Yusuke Tokunaga;Gianluca Giovannetti;Silvia Picozzi

  • Magnetic and electronic properties of a single crystal of ordered double perovskite Sr 2 FeMoO 6

    Y. Tomioka;T. Okuda;Y. Okimoto;R. Kumai

  • Ferroelectricity and polarity control in solid-state flip-flop supramolecular rotators.

    Tomoyuki Akutagawa;Hiroyuki Koshinaka;Daisuke Sato;Sadamu Takeda

  • Ferroelectricity near room temperature in co-crystals of nonpolar organic molecules

    Sachio Horiuchi;Fumiyuki Ishii;Reiji Kumai;Yoichi Okimoto

  • Structural and magnetoelectric properties of Ga 2 − x Fe x O 3 single crystals grown by a floating-zone method

    T. Arima;T. Arima;D. Higashiyama;Y. Kaneko;J. P. He

  • Three-way switching in a cyanide-bridged [CoFe] chain

    Norihisa Hoshino;Fumichika Iijima;Graham N. Newton;Norifumi Yoshida

  • Diffuse Phase Transition and Phase Separation in Cr-Doped Nd 1/2 Ca 1/2 MnO 3 : A Relaxor Ferromagnet

    T. Kimura;Y. Tomioka;R. Kumai;Y. Okimoto

  • Above-room-temperature ferroelectricity and antiferroelectricity in benzimidazoles

    Sachio Horiuchi;Fumitaka Kagawa;Kensuke Hatahara;Kensuke Kobayashi

  • Electronic Ferroelectricity in a Molecular Crystal with Large Polarization Directing Antiparallel to Ionic Displacement

    Kensuke Kobayashi;Sachio Horiuchi;Reiji Kumai;Reiji Kumai;Fumitaka Kagawa

  • Room-temperature ferroelectricity and gigantic dielectric susceptibility on a supramolecular architecture of phenazine and deuterated chloranilic acid.

    Sachio Horiuchi;Reiji Kumai;Yoshinori Tokura

  • Programmable spin-state switching in a mixed-valence spin-crossover iron grid

    Takuto Matsumoto;Graham N. Newton;Takuya Shiga;Shinya Hayami

  • Striction-Coupled Magnetoresistance in Perovskite-Type Manganese Oxides

    H. Kuwahara;Y. Tomioka;Y. Moritomo;A. Asamitsu

  • Effects of Substituted Alkyl Chain Length on Solution-Processable Layered Organic Semiconductor Crystals

    Satoru Inoue;Hiromi Minemawari;Jun’ya Tsutsumi;Masayuki Chikamatsu

  • Hydrogen-bonding molecular chains for high-temperature ferroelectricity.

    Sachio Horiuchi;Reiji Kumai;Yoshinori Tokura

  • Hydrogen-Bond-Dynamics-Based Switching of Conductivity and Magnetism: A Phase Transition Caused by Deuterium and Electron Transfer in a Hydrogen-Bonded Purely Organic Conductor Crystal

    Akira Ueda;Shota Yamada;Shota Yamada;Takayuki Isono;Hiromichi Kamo

  • A Supramolecular Ferroelectric Realized by Collective Proton Transfer

    Sachio Horiuchi;Reiji Kumai;Yoshinori Tokura;Yoshinori Tokura

  • Magnetostructural phase transitions in La1-xSrxMnO3 with controlled carrier density.

    A Asamitsu;Y Moritomo;R Kumai;Y Tomioka

  • Hydrogen bond-promoted metallic state in a purely organic single-component conductor under pressure

    Takayuki Isono;Hiromichi Kamo;Akira Ueda;Kazuyuki Takahashi

  • Erratum: Above-room-temperature ferroelectricity in a single-component molecular crystal (Nature (2010) 463 (789-792))

    Sachio Horiuchi;Yusuke Tokunaga;Gianluca Giovannetti;Silvia Picozzi

Frequent Co-Authors

Yoshinori Tokura
Yoshinori Tokura University of Tokyo
Sachio Horiuchi
Sachio Horiuchi National Institute of Advanced Industrial Science and Technology
Tatsuo Hasegawa
Tatsuo Hasegawa University of Tokyo
Taka-hisa Arima
Taka-hisa Arima University of Tokyo
Yoichi Okimoto
Yoichi Okimoto Tokyo Institute of Technology
Yasuhiro Tokura
Yasuhiro Tokura University of Tsukuba
Y. Tomioka
Y. Tomioka National Institute of Advanced Industrial Science and Technology
Masashi Kawasaki
Masashi Kawasaki University of Tokyo
Ichiro Terasaki
Ichiro Terasaki Nagoya University
Hiroki Oshio
Hiroki Oshio Dalian University of Technology

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Best Scientists Citing Reiji Kumai

Trending Scientists