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Dive into the research topics where Kenji Ohoyama is active.

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Featured researches published by Kenji Ohoyama.


Physical Review B | 1999

Hole-concentration-induced transformation of the magnetic and orbital structures in Nd 1 − x Sr x MnO 3

R. Kajimoto; Hideki Yoshizawa; H. Kawano; H. Kuwahara; Y. Tokura; Kenji Ohoyama; Masayoshi Ohashi

We have peformed neutron diffraction measurements on melt-grown polycrystalline samples of


Journal of the Physical Society of Japan | 2000

Relation between crystal and magnetic structures of layered manganite La2-2xSr1+2xMn2O7 (0.30 ≤ x ≤ 0.50)

Masato Kubota; Hirofumi Fujioka; K. Hirota; Kenji Ohoyama; Yutaka Moritomo; Hideki Yoshizawa; Y. Endoh

{\mathrm{Nd}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3}


Journal of the Physical Society of Japan | 1999

Neutron Powder Diffraction on Ce 11B 2C 2 and Nd 11B 2C 2: A New Model for the Tetragonal Crystal Structure

Takahiro Onimaru; Hideya Onodera; Kenji Ohoyama; H. Yamauchi; Yasuo Yamaguchi


Journal of the American Chemical Society | 2009

CaFeO2: a new type of layered structure with iron in a distorted square planar coordination.

Cédric Tassel; José Miguel Pruneda; Naoaki Hayashi; Takashi Watanabe; Atsushi Kitada; Yoshihiro Tsujimoto; Hiroshi Kageyama; Kazuyoshi Yoshimura; Mikio Takano; Masakazu Nishi; Kenji Ohoyama; Masaichiro Mizumaki; Naomi Kawamura; Jorge Íñiguez; Enric Canadell

(0.49l~xl~0.75).


Journal of the Physical Society of Japan | 2005

Revised Crystal Structure Model of Li2NH by Neutron Powder Diffraction

Kenji Ohoyama; Yuko Nakamori; Shin-ichi Orimo; K. Yamada

A systematic transformation of the crystalline and magnetic structures of this system was observed. This can be consistently explained by the change of the character of the Mn


Journal of the Physical Society of Japan | 2009

Relationship between Structure and Superconductivity in FeSe1-xTex

Kazumasa Horigane; Haruhiro Hiraka; Kenji Ohoyama

{e}_{g}


Journal of the Physical Society of Japan | 2003

Ground State Properties of the A-site Ordered Manganites, RBaMn2O6 (R = La, Pr and Nd)

Tomohiko Nakajima; Hiroshi Kageyama; Hideki Yoshizawa; Kenji Ohoyama; Yutaka Ueda

orbitals. When increasing X, the


Journal of the Physical Society of Japan | 2000

Characteristic magnetic structure due to antiferroquadrupolar ordering in Ho11B2C2

Kenji Ohoyama; H. Yamauchi; Aya Tobo; Hideya Onodera; Hiroaki Kadowaki; Yasuo Yamaguchi

{\mathrm{Nd}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3}


Journal of the Physical Society of Japan | 2012

Emergence of Magnetic Long-range Order in Frustrated Pyrochlore Nd2Ir2O7 with Metal–Insulator Transition

Keisuke Tomiyasu; Kazuyuki Matsuhira; Kazuaki Iwasa; Masanori Watahiki; Seishi Takagi; Makoto Wakeshima; Yukio Hinatsu; Makoto Yokoyama; Kenji Ohoyama; K. Yamada

system exhibits an evolution from a metallic ferromagnetic state, to a metallic A-type antiferromagnetic (AFM), and then to an insulating C-type AFM state. The CE-type charge-ordered AFM state was observed only in the vicinity of


Journal of the Physical Society of Japan | 2000

Crystal and magnetic structure of conducting double perovskite Sr2FeMoO6

Yutaka Moritomo; Sheng Xu; Akihiko Machida; T. Akimoto; Eiji Nishibori; Masaki Takata; Makoto Sakata; Kenji Ohoyama

x=1/2

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H. Yamauchi

Japan Atomic Energy Agency

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