H
Hiroshi Kojitani
Researcher at Gakushuin University
Publications - 78
Citations - 1964
Hiroshi Kojitani is an academic researcher from Gakushuin University. The author has contributed to research in topics: Perovskite (structure) & Rietveld refinement. The author has an hindex of 26, co-authored 76 publications receiving 1612 citations. Previous affiliations of Hiroshi Kojitani include National Institute for Materials Science.
Papers
More filters
Journal ArticleDOI
High-pressure synthesis, crystal structure, and phase stability relations of a LiNbO3-type polar titanate ZnTiO3 and its reinforced polarity by the second-order Jahn-Teller effect.
Yoshiyuki Inaguma,Akihisa Aimi,Yuichi Shirako,Daichi Sakurai,Daisuke Mori,Hiroshi Kojitani,Masaki Akaogi,Masanobu Nakayama +7 more
TL;DR: The findings indicate that LN-type ZnTiO3 is a candidate ferroelectric material with high performance and the intraoctahedral distortion, spontaneous polarization, and the accompanying SHG response are caused by the stabilization of the polar LiNbO3-type structure and reinforced by the second-order Jahn-Teller effect.
Journal ArticleDOI
Post-spinel transitions in pyrolite and Mg2SiO4 and akimotoite–perovskite transition in MgSiO3: Precise comparison by high-pressure high-temperature experiments with multi-sample cell technique
TL;DR: In this article, the phase boundaries of pyrolite and Mg2SiO4 were compared by detailed phase relation experiments using a multi-anvil apparatus using a multiscale cell technique.
Journal ArticleDOI
Low-temperature heat capacities, entropies and enthalpies of Mg 2 SiO 4 polymorphs, and α−β−γ and post-spinel phase relations at high pressure
TL;DR: In this paper, the low-temperature isobaric heat capacities (C p) of β- and γ-Mg2SiO4 were measured at the range of 1.8-304.7 K with a thermal relaxation method using the Physical Property Measurement System.
Journal ArticleDOI
Synthesis, phase relation and electrical and electrochemical properties of ruthenium-substituted Li2MnO3 as a novel cathode material
Daisuke Mori,Hikari Sakaebe,Masahiro Shikano,Hiroshi Kojitani,Kuniaki Tatsumi,Yoshiyuki Inaguma +5 more
TL;DR: Li 2 Mn 0.4 Ru 0.6 O 3 (x ǫ = 0.8) and 0.2 O 3 0.5 O 3 O 3 as mentioned in this paper showed the lowest resistivity of 5.7 × 10 2 Ω cm at room temperature.
Journal ArticleDOI
Post-perovskite phase transition in CaRuO3
TL;DR: In this paper, the phase boundary of the post-perovskite transition in CaRuO 3 was determined as P ǫ(GPa) = 0.010 −1.010 × T −1 −12.4.