Ground State Properties of the A-site Ordered Manganites, RBaMn_2O_6 (R = La, Pr and Nd)(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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The most significant structural feature of the A-site ordered manganese perovskites, RBaMn_2O_6, is that the MnO_2 square sublattice is sandwiched by two types of rock-salt layers, RO and BaO, with much different sizes and consequently the MnO_6 octahedron itself is distorted in a noncetrosymmetric manner. The structures and electromagnetic properties of RBaMn_2O_6 (R = La, Pr and Nd) have been investigated. They have tetragonal structures with no tilt of MnO_6 octahedra and show ferromagnetic metal transitions. The ground state is a coexistence of ferromagnetic metal and antiferromagnetic charge-orbital ordered phases for LaBaMn_2O_6 and A-type antiferromagnetic metal for PrBaMn_2O_6 and NdBaMn_2O_6. These ground state behaviors are explained by the effect of Mn-O distance on the bandwidth and the layer structure with the RO-MnO_2-BaO-MnO_2 stacking along the c-axis.
- 社団法人日本物理学会の論文
- 2003-12-15
著者
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OHOYAMA Kenji
Institute for Materials Research, Tohoku University
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UEDA Yutaka
Material Design and Characterization Laboratory,Institute for Solid State Physics,The University of
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Yoshizawa Hideki
Brookhavcn National Laboratory Upion:institute For Solid State Physics The University Of Tokyo
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KAGEYAMA Hiroshi
Material Design and Characterization Laboratory, Institute for Solid StatePhysics, University of Tok
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Yoshizawa H
Univ. Tokyo Ibaraki
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Yoshizawa H
Dept. Of Biology Matsumoto Dental College
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Yoshizawa Hideki
Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo
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Nakajima T
Materials Design And Characterization Laboratory Institute For Solid State Physics University Of Tok
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Nakajima Tomohiko
Materials Design And Characterization Laboratory Institute For Solid State Physics University Of Tok
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Nakajima Tomohiko
Materials Design And Characterization Laboratory Institute For Solid State Physics The University Of
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Yoshizawa Hideki
Neutron Scattering Laboratory Institute For Solid State Physics University Of Tokyo
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Ohoyama Kenji
Institute For Materials Of Physics Tohoku University
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Yoshizawa Hideki
Univ. Tokyo Ibaraki
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Ueda Yutaka
Material Design and Characterization Laboratory, Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581
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