Microdomain Structure of Cr-Doped Manganites: Nd<sub><b>1/2</b></sub>Ca<sub><b>1/2</b></sub>(Mn,Cr)O<sub><b>3</b></sub>

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  • Machida Akihiko
    Department of Crystalline Materials Science, Nagoya University, Nagoya 464-8603
  • Moritomo Yutaka
    CIRSE, Nagoya University, Nagoya 464-8603
  • Nishibori Eiji
    Department of Applied Physics, Nagoya University, Nagoya 464-8603
  • Takata Masaki
    Department of Applied Physics, Nagoya University, Nagoya 464-8603
  • Sakata Makoto
    Department of Applied Physics, Nagoya University, Nagoya 464-8603
  • Ohoyama Kenji
    Institute for Materials Research, Tohoku University, Sendai 980-8755
  • Mori Shigeo
    Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551
  • Yamamoto Naoki
    Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551
  • Nakamura Arao
    CIRSE, Nagoya University, Nagoya 464-8603

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タイトル別名
  • Microdomain Structure of Cr-Doped Manganites. Nd1/2Ca1/2(Mn,Cr)O3.

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Crystal and magnetic structures of Cr-doped manganites, Nd1/2Ca1/2Mn1-yCryO3 (y=0.00 and 0.03), have been investigated by synchrotron radiation (SR) x-ray powder diffraction as well as neutron powder diffraction measurements. A detailed analysis of the high-resolution x-ray profile has revealed that the Cr-doped compound exhibits broad extra reflections, suggesting the formation of microdomains below the charge-ordering temperature TCO. The origin of the microdomain structure is discussed in terms of the charge separation.

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