Theoretical Prediction of the Orthorhombic (II) Phase in the YBa_2Cu_3O_<7-δ> System
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概要
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The existence of the orthorhombic(II) phase in the YBa_2Cu_3O_<7-δ> system is derived by a model calculation of the oxygen order-disorder transformation on the Cu(1) plane. The repulsion interaction energy between the second-nearest-neighboring oxygen atoms contributes to the occurrence of the orthorhombic(I)-orthorhombic(II) transformation while the first-nearest interaction gives rise to the tetragonal-orthorhombic(I) transformation. The structure of the orthorhombic(II) phase is considered to be an alternately-ordered state of the oxygen atoms within the a-axis site.
- 社団法人応用物理学会の論文
- 1987-12-20
著者
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KUBO Yoshimi
Fundamental Research Laboratories, NEC Corporation
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Kubo Yoshimi
Fundamental Res. Labs. Nec Corp.
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IGARASHI Hitoshi
Fundamental Research Laboratories, NEC Corporation
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Igarashi Hitoshi
Fundamental Research Laboratories Nec Corporation
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