Neutron Structural analysis of La_<1-x>Sr_xMnO_3 : variation of One-Electron Bandwidth W with Hole Doping
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概要
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We have performed neutron powder diffraction measurements for La_<1-x>Sr_xMnO_3 (x = 0.00-0.20) at room temperature. We have found that the crystal structure is orthorhomhic (Pbnm, Z = 4; O) at x 〓 0.14 and rhombohedral (R3^^-c, Z = 2; R) at x 〓 0.18, respectively. At this structural phase transition, the averaged Mn-O-Mn bond angle<0>discontinuously increases from 160.8 at x = 0.14 to 163.5 at x = 0.18. We have estimated relative variation of the one-electron bandwidth W of the e_g-band, and discussed the insulator-metal behavior induced by hole doping.
- 社団法人日本物理学会の論文
- 2003-03-15
著者
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OHOYAMA Kenji
Institute for Materials Research, Tohoku University
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Ohoyama K
Institute For Materials Research Tohoku University
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Ohoyama Kenji
Department Of Physics Faculty Of Science Tohoku University
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Nakamura A
Advanced Science Research Center Japan Atomic Energy Agency
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Nakamura A
Department Of Applied Physics Nagoya University
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Ohyama Kenji
Imr Tohoku University
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MORITOMO Yutaka
Department of Physics, University of Tsukuba
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Nakamura A
Nagoya Univ. Nagoya
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Oikawa K
Inst. Materials Structure Sci. Ibaraki
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Moritomo Yutaka
Department Of Applied Physics Nagoya University
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Nakamura A
Osaka Univ. Foreign Studies Osaka
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Nakamura Arao
Cirse Nagoya University
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Nakamura Arao
Department Of Applied Physics Graduate School Of Engineering Nagoya University
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Nakamura Arao
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Xu Sheng
Department Of Crystalline Materials Science Nagoya University
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Morimoto Y
Department Of Physics University Of Tsukuba
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Ohoyama Kenji
Institute For Materials Of Physics Tohoku University
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Nakamura Arao
Advanced Science Research Center, Japan Atomic Energy Agency
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Xu Sheng
Department of Crystalline Materials Science, Nagoya University
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