Anomalous Electric Conductions in KSbO_3-Type Metallic Rhenium Oxides(Cross-disciplinary physics and related areas of science and technology)
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概要
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Single crystals of KSbO_3-type rhenium oxides, La_4Re_6O_<19>, Pb_6Re_6O_<19>, Sr_2Re_3O_9, and Bi_3Re_3O_<11>, were synthesized by a hydrothermal method. Their crystal structures can be regarded as a network of three-dimensional orthogonal-dimer lattice of edge-shared ReO_6 octahedra. All of them exhibit small magnitude of Pauli paramagnetism, indicating metallic electronic states without strong electron correlations. The resistivity of these rhenates. except Bi_3Re_3O_<11>, have a temperature dependence of ρ(T)=ρ_0+AT^n(n[〜!〜]1.6) in a wide temperature range between 5 and 300K, which is extraordinary for three-dimensional metals without strong electron correlations. The resistivity of Bi_3Re_3O_<11> shows an anomaly around at 50K, where the magnetic susceptibility also detects a deviation from ordinary Pauli paramagnetism.
- 社団法人日本物理学会の論文
- 2007-04-15
著者
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SUZUKI Hirotake
Department of Dermatology, Showa University School of Medicine
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Suzuki Hirotake
Department Of Physics Chuo University
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Sato Hirohiko
Department Of Biotechnology Tokyo University Of Agriculture And Technology
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OZAWA Hiromi
Department of Physics, Chuo University
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Ozawa Hiromi
Department Of Physics Chuo University
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