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Toshiya Kumagai

Researcher at National Institute of Advanced Industrial Science and Technology

Publications -  224
Citations -  2639

Toshiya Kumagai is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Thin film & Oxide. The author has an hindex of 26, co-authored 224 publications receiving 2527 citations. Previous affiliations of Toshiya Kumagai include National Chemical Laboratory & Chiba Institute of Technology.

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A revisit of photoluminescence property for vanadate oxides AVO3 (A:K, Rb and Cs) and M3V2O8 (M:Mg and Zn)

TL;DR: In this article, the authors revisited the vanadium oxide phosphors, AVO 3 (A:K, Rb, and Cs) and M 3 V 2 O 8(A:Mg and Zn) for a revaluation of possibility of these compounds for lighting applications, and the internal quantum efficiency and luminescent colour properties for AVO3 and M3 V 2O 8 have been presented.
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Direct fabrication of metavanadate phosphor films on organic substrates for white-light-emitting devices

TL;DR: The optical properties of white-light-emitting metavanadate phosphors, AVO3, are shown and a new direct fabrication process for RbVO3 films onto flexible polyethylene terephthalate (PET) substrates is reported by means of a vacuum ultraviolet irradiation using an excimer lamp.
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Kinetics of the Catalytic Decomposition of Hydrogen Iodide in the Magnesium–Iodine Thermochemical Cycle

TL;DR: In this article, a kinetic analysis of the catalytic decomposition of hydrogen iodide has been carried out by the use of a flow method at 500-700 K and the platinum-supported active carbon catalyst (1 wt%) and the active carbon catalysts (1 Wt%) were used as the catalysts.
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Epitaxial Growth Mechanism for Perovskite Oxide Thin Films under Pulsed Laser Irradiation in Chemical Solution Deposition Process

TL;DR: In this paper, the epitaxial growth of perovskite manganite LaMnO3 (LMO) was studied by means of chemical solution deposition assisted by pulsed UV laser irradiation, termed excimer laser-assisted metal organic deposition (ELAMOD).
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Spin-polarized electronic band structures of the Fe4N–Co4N system

TL;DR: In this article, the spin-polarized electronic band structures of cubic antiperovskite metal nitrides (Fe4N, Fe3CoN and Co4N) were calculated by the full-potential method with mixed basis augmented plane wave plus local orbitals.