Yang, Jinhu, Matsui, Mami, Kawa, Masatomo, Ohta, Hiroto, Michioka, Chishiro, Dong, Chiheng, ...
The spin-fluctuation effect in the Se-substituted system Fe$_{1+\delta}$Te$_{1-x}$Se$_x$ ($x$ = 0, 0.05, 0.12, 0.20, 0.28, 0.33, 0.45, 0.48 and 1.00; $0
Spectroscopic Study of $^{75}$As and $^{139}$La NMR on Layered Structure Ferromagnet LaCoAsO (2009)
Ohta, Hiroto, Michioka, Chishiro, Yoshimura, Kazuyoshi
$^{75}$As and $^{139}$La field-swept NMR spectra were obtained for the novel weakly itinerant ferromagnet LaCoAsO with 2D layered structure above the Curie temperature of 55 K. By analyzing NMR...
Michioka, Chishiro, Ohta, Hiroto, Matsui, Mami, Yang, Jinhu, Yoshimura, Kazuyoshi, Fang, Minghu
We have performed $^{125}$Te NMR on a single crystal of the novel layered superconductor Fe$_{1.04}$Te$_{0.67}$Se$_{0.33}$ for the first time. The spin parts of the Knight shifts for both $H // a$,...
Synthesis, Structural and magnetic properties of the solid solution (CuCl1-xBrx)LaNb2O7 (0 (2009)
Tsujimoto, Yoshihiro, Kitada, Atsushi, Kageyama, Hiroshi, Nishi, Masakazu, Narumi, Yasuo, Kindo, Koichi, ...
The two-dimensional (2D) quantum spin system (CuCl)LaNb2O7 has a spin-singlet ground state with a gap of 2.3 meV, while the isostructural material (CuBr)LaNb2O7 displays collinear antiferromagnetic...
Spin transition in a four-coordinate iron oxide (2009)
Kawakami, Takateru, Tsujimoto, Yoshihiro, Kageyama, Hiroshi, Chen, Xing-Qiu, Fu, C. L., Tassel, Cedric, ...
四本の手をもつ金属原子の磁性の変換に成功 －磁気記録、スイッチ素子の革新につながるか－. 京都大学プレスリリース. 2009-07-21....
Infinite-layer iron oxide with a square-planar coordination (2007)
Tsujimoto, Yoshihiro, Tassel, Cedric, Hayashi, Naoaki, Watanabe, Takashi, Kageyama, Hiroshi, Yoshimura, Kazuyoshi, ...
簡便な手法により、化学の常識を覆す鉄酸化物を発見. 京都大学プレスリリース. 2007-12-13. http://www.kyoto-u.ac.jp/notice/05_news/documents/071213_11.htm
Novel phase diagram of superconductor NaxCoO2-yH2O in a 75 % relative humidity (2005)
Ohta, Hiroto, Michioka, Chishiro, Itoh, Yutaka, Yoshimura, Kazuyoshi
We succeeded in synthesizing the powder samples of bilayer-hydrate sodium cobalt oxide superconductors NaxCoO2-yH2O with Tc = 0 ~ 4.6 K by systematically changing the keeping duration in a 75 %...
$^{17}$O NMR Measurements on Superconducting Na$_{0.35}$CoO$_{2} \cdot y$H$_{2}$O (2005)
Ihara, Yoshihiko, Ishida, Kenji, Yoshimura, Kazuyoshi, Takada, Kazunori, Sasaki, Takayoshi, Sakurai, Hiroya, ...
An $^{17}$O NMR measurement was performed on nonoriented polycrystalline Na$_{0.35}$CoO$_2 \cdot y$H$_2$O with superconducting (SC) transition temperature $T_\text{c} = 4.6$ K. A weak temperature...