F
Fujio Izumi
Researcher at National Institute for Materials Science
Publications - 261
Citations - 36202
Fujio Izumi is an academic researcher from National Institute for Materials Science. The author has contributed to research in topics: Neutron diffraction & Rietveld refinement. The author has an hindex of 53, co-authored 260 publications receiving 29738 citations. Previous affiliations of Fujio Izumi include Argonne National Laboratory & University of Tsukuba.
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Journal ArticleDOI
Disordered Distribution of K+ Ions Interlayered in KxTi2−x/3Lix/3O4(x = 0.8)
TL;DR: An integrated software system, REMEDY, has been developed for MEM-based whole-pattern fitting as discussed by the authors, which is applied to the determination of the crystal structure and electron densities for KxTi2−x/3Li
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Neutron Powder Diffraction Study of a Phase Transition in La0.68(Ti0.95Al0.05)O3
TL;DR: In this paper, the Rietveld profile-fitting analyses of the neutron data and the synchrotron diffraction profile revealed that the crystal symmetry of the low-temperature phase of La0.68(Ti0.95Al0.05)O3 is orthorhombic Cmmm (2ap× 2ap×2ap; p: pseudo-cubic perovskite).
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Novel techniques of neutron powder diffraction and their applications to superconducting oxides
Fujio Izumi,Ayako Yamamoto,Nellie R. Khasanova,Shintaro Kumazawa,Wei Zhi Hu,Takashi Kamiyama +5 more
TL;DR: In this paper, the authors used the time-of-flight (TOF) neutron powder diffractometer Vega, whose wide solid angle enables collecting intensity data very efficiently, for the structure refinement of (K 0.87 Bi 0.13 )BiO 3 prepared at high pressure.
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Neutron powder diffraction study of phase separation in La2CuO4+δ
TL;DR: In this article, three samples of superconducting La2CuO4+δ with δ values of 0.047, 0.073, and 0.132 were prepared by oxidizing La2cuO4 in aqueous solutions of KMnO4 at 50°C.
Journal ArticleDOI
2 × 2 Superstructure in Sodium Cobalt Oxide Superconductors
Kazunori Takada,Mitsuko Onoda,Yong-Nam Choi,Dimitri N. Argyriou,Fujio Izumi,Hiroya Sakurai,Eiji Takayama-Muromachi,Takayoshi Sasaki +7 more
TL;DR: In this paper, the authors analyzed the crystal structures of bilayer-hydrates of sodium cobalt oxide bilayer and showed that the host and guest layers are commensurate and have a 2 × 2 superstructure.