S
Shin-ya Koshihara
Researcher at Tokyo Institute of Technology
Publications - 307
Citations - 13873
Shin-ya Koshihara is an academic researcher from Tokyo Institute of Technology. The author has contributed to research in topics: Phase transition & Femtosecond. The author has an hindex of 47, co-authored 297 publications receiving 12959 citations. Previous affiliations of Shin-ya Koshihara include National Chemical Laboratory & University of Tokyo.
Papers
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Journal ArticleDOI
Room-Temperature Ferromagnetism in Transparent Transition Metal-Doped Titanium Dioxide
Yuji Matsumoto,Makoto Murakami,T. Shono,Tetsuya Hasegawa,Tomoteru Fukumura,Masashi Kawasaki,Parhat Ahmet,Toyohiro Chikyow,Shin-ya Koshihara,Hideomi Koinuma +9 more
TL;DR: The observation of transparent ferromagnetism in cobalt-doped anatase thin films with the concentration of cobalt between 0 and 8% is reported, indicating the existence of ferromagnetic long-range ordering.
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Lanthanide Double-Decker Complexes Functioning as Magnets at the Single-Molecular Level
TL;DR: Double-decker phthalocyanine complexes with Tb3+ or Dy3+ showed slow magnetization relaxation as a single-molecular property and a significant temperature rise results from a mechanism in the relaxation process different from that in the transition-metal-cluster SMMs.
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Magnetic properties of Mn-doped ZnO
Tomoteru Fukumura,Zhengwu Jin,Masashi Kawasaki,T. Shono,T. Hasegawa,Shin-ya Koshihara,Hideomi Koinuma +6 more
TL;DR: In this paper, the magnetic properties of an oxide-diluted magnetic semiconductor (DMS), Zn0.64Mn 0.36O, were investigated and the temperature dependence of the magnetization showed a spin-glass behavior with the large magnitude of the Curie-Weiss temperature.
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Ferromagnetic order induced by photogenerated carriers in magnetic iii-v semiconductor heterostructures of (in,mn)as/gasb
Shin-ya Koshihara,Akira Oiwa,Masakatsu Hirasawa,Shingo Katsumoto,Yasuhiro Iye,C. Urano,Hidenori Takagi,Hiro Munekata +7 more
TL;DR: In this paper, the inducement of a ferromagnetic order by photogenerated carriers in a novel III-V-based magnetic semiconductor heterostructure was reported.
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Mononuclear Lanthanide Complexes with a Long Magnetization Relaxation Time at High Temperatures: A New Category of Magnets at the Single-Molecular Level
TL;DR: In this article, an alternating current (ac) magnetic susceptibility and magnetization hysteresis loop measurements have been carried out for anionic bis(phthalocyaninato)terbium and bis (phthalocyclichenato)dysprosium and it has been found that the magnetization relaxation in the Tb complex is dominated by the two-phonon Orbach process in the temperature range 25−40 K and direct or Raman process below 25 K.