Hiroko Tokoro
University of Tsukuba
204 Papers
1.2K Citations
Hiroko Tokoro is an academic researcher from University of Tsukuba. The author has contributed to research in topics: Phase transition & Phase (matter). The author has an hindex of 35, co-authored 180 publications. Previous affiliations of Hiroko Tokoro include Kyoto University & National Presto Industries.
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Papers
Light-induced spin-crossover magnet
TL;DR: This work describes the long-range magnetic ordering of the extended Fe(II)(HS) sites in a metal-organic framework caused instead by a light-induced excited spin-state trapping effect, in which the Fe-Nb-based material behaves as a spin-crossover magnet.
511
High proton conduction in a chiral ferromagnetic metal-organic quartz-like framework.
Emilio Pardo,Emilio Pardo,Cyrille Train,Geoffrey Gontard,Kamal Boubekeur,Oscar Fabelo,Hongbo Liu,Brahim Dkhil,Francesc Lloret,Kosuke Nakagawa,Hiroko Tokoro,Shin-ichi Ohkoshi,Michel Verdaguer +12 more
TL;DR: Single-crystal X-ray diffraction revealed that the anionic bimetallic coordination network adopts a chiral three-dimensional quartz-like architecture and exhibits a very high proton conductivity due to the guest molecules.
307
90-degree optical switching of output second-harmonic light in chiral photomagnet
TL;DR: Perpendicular photoswitching of the polarization plane of the output second-harmonic light was observed in a chiral spin-crossover assembly based on an iron octacyanoniobate magnet as discussed by the authors.
298
Photomagnetism in Cyano-Bridged Bimetal Assemblies
Shin-ichi Ohkoshi,Hiroko Tokoro +1 more
TL;DR: This Account describes cyano-bridged bimetal assemblies developed in the laboratory and observed the first example of photoinduced spin crossover ferromagnetism with a FeNb system, in which a strong superexchange interaction between photoproduced Fe(II)(HS) and neighboring paramagnetic Nb(IV) operates through a CN bridge.
275
Synthesis of a metal oxide with a room-temperature photoreversible phase transition
Shin-ichi Ohkoshi,Yoshihide Tsunobuchi,Tomoyuki Matsuda,Kazuhito Hashimoto,Asuka Namai,Fumiyoshi Hakoe,Hiroko Tokoro +6 more
TL;DR: This is the first demonstration of a photorewritable phenomenon at room temperature in a metal oxide and lambda-Ti-O(5) satisfies the operation conditions required for a practical optical storage system (operational temperature, writing data by short wavelength light and the appropriate threshold laser power).