Takamasa Ishigaki

Takamasa Ishigaki publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Takamasa Ishigaki sits on this spectrum.

Takamasa Ishigaki D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Takamasa Ishigaki sits on this spectrum.

Overview

Best Publications

• Diffusion of oxide ion vacancies in perovskite-type oxides

  Takamasa Ishigaki;Shigeru Yamauchi;Kohji Kishio;Junichiro Mizusaki

  534
  Citations

• Anatase, Brookite, and Rutile Nanocrystals via Redox Reactions under Mild Hydrothermal Conditions: Phase-Selective Synthesis and Physicochemical Properties

  Ji-Guang Li;Takamasa Ishigaki;Xudong Sun

  498
  Citations

• Wavelength-sensitive photocatalytic degradation of methyl orange in aqueous suspension over iron(III)-doped TiO2 nanopowders under UV and visible light irradiation.

  Wang Xh;Li Jg;Kamiyama H;Moriyoshi Y

  433
  Citations

• Monodispersed Colloidal Spheres for Uniform Y2O3:Eu3+ Red-Phosphor Particles and Greatly Enhanced Luminescence by Simultaneous Gd3+ Doping

  Ji-Guang Li;Xiaodong Li;Xudong Sun;Takamasa Ishigaki

  371
  Citations

• Pyrogenic Iron(III)-Doped TiO2 Nanopowders Synthesized in RF Thermal Plasma: Phase Formation, Defect Structure, Band Gap, and Magnetic Properties

  Wang Xh;Li Jg;Kamiyama H;Katada M

  329
  Citations

• Effect of hydrogen doping on ultraviolet emission spectra of various types of ZnO

  Naoki Ohashi;Takamasa Ishigaki;Nobuhiro Okada;Takashi Sekiguchi

  241
  Citations

• Ultrasonic Dispersion of TiO2 Nanoparticles in Aqueous Suspension

  Kimitoshi Sato;Ji-Guang Li;Hidehiro Kamiya;Takamasa Ishigaki

  228
  Citations

• Charge separation at the rutile/anatase interface: a dominant factor of photocatalytic activity

  Takahira Miyagi;Takahira Miyagi;Masayuki Kamei;Takefumi Mitsuhashi;Takamasa Ishigaki

  198
  Citations

• Uniform Colloidal Spheres for (Y1−xGdx)2O3 (x = 0–1): Formation Mechanism, Compositional Impacts, and Physicochemical Properties of the Oxides

  Ji-Guang Li;Xiaodong Li;Xudong Sun;Takayasu Ikegami

  194
  Citations

• Thermodynamic analysis of nucleation of anatase and rutile from TiO2 melt

  Yali Li;Takamasa Ishigaki

  187
  Citations

• Phase structure and luminescence properties of Eu3+-doped TiO2 nanocrystals synthesized by Ar/O2 radio frequency thermal plasma oxidation of liquid precursor mists.

  Ji-Guang Li;Xiaohui Wang;Kenji Watanabe;Takamasa Ishigaki

  171
  Citations

• Brookite → rutile phase transformation of TiO2 studied with monodispersed particles

  Ji-Guang Li;Takamasa Ishigaki

  164
  Citations

• Tracer diffusion coefficient of oxide ions in LaCoO3 single crystal

  Takamasa Ishigaki;Shigeru Yamauchi;Junichiro Mizusaki;Kazuo Fueki

  146
  Citations

• Passivation of active recombination centers in ZnO by hydrogen doping

  Naoki Ohashi;Takamasa Ishigaki;Nobuhiro Okada;Hiroyuki Taguchi

  140
  Citations

• Preparation of pure rutile and anatase TiO2 nanopowders using RF thermal plasma

  Seung-Min Oh;Takamasa Ishigaki

  137
  Citations

• Monodispersed Spherical Particles of Brookite‐Type TiO2: Synthesis, Characterization, and Photocatalytic Property

  Ji-Guang Li;Chengchun Tang;Di Li;Hajime Haneda

  133
  Citations

• Cobalt-Doped TiO2 Nanocrystallites: Radio-Frequency Thermal Plasma Processing, Phase Structure, and Magnetic Properties

  Ji-Guang Li;Robert Büchel;Masaaki Isobe;Takao Mori

  123
  Citations

• Enhancement and patterning of ultraviolet emission in ZnO with an electron beam

  Rongguo Xie;Takashi Sekiguchi;Takamasa Ishigaki;Naoki Ohashi

  122
  Citations

• Controlling the synthesis of TaC nanopowders by injecting liquid precursor into RF induction plasma

  Takamasa Ishigaki;Seung-Min Oh;Seung-Min Oh;Ji-Guang Li;Dong-Wha Park

  118
  Citations

• Defect‐Mediated Photoluminescence Dynamics of Eu3+‐Doped TiO2 Nanocrystals Revealed at the Single‐Particle or Single‐Aggregate Level

  Takashi Tachikawa;Takamasa Ishigaki;Ji-Guang Li;Mamoru Fujitsuka

  115
  Citations