Successive Magnetic Ordering in CuFeO_2 : A New Type of Partially Disordered Phase in a Triangular Lattice Antiferromagnet
スポンサーリンク
概要
- 論文の詳細を見る
Magnetic ordering in a rhombohedrally stacked triangular lattice antiferromagnet, CuFeO_2 was investigated on powder and single crystals by measurements of neutron diffraction, magnetic susceptibility, Mossbauer effect together with Monte Carlo simulations. CuFeO_2 was found to exhibit transitions at T_<N1>=16±0.5 K and T_<N2>=11±0.5 K. The low temperature phase has an orthorhombic magnetic unit cell with collinear moments along the c-axis, whereas the intermediate temperature phase is a partially disordered phase with a monoclinic magnetic unit cell where 1/5 of moments remain paramagnetic. The Monte Carlo simulations for the Ising spin tiangular lattice antiferromagnet can reproduce the observed successive transition in the case of the exchange parameters 4J_3<2J_2〜J_1<0. This combination of exchange parameters gives an account for the stability of the collinear magnetic structure in CuFeO_2.
- 社団法人日本物理学会の論文
- 1993-12-15
著者
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SHINJO Teruya
Institute for Chemical Research,Kyoto University
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YOSHIZAWA Hideki
Institute for Solid State Physics,University of Tokyo
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MEKATA Mamoru
Department of Applied Physics,Fukui University
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MITSUDA Setsuo
Department of Physics, Faculty of Science, Tokyo University of Science, Tokyo
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Mitsuda Setsuo
Department Of Physics Science University Of Tokyo
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Mitsuda Setsuo
Depertment Of Physics Science University Of Tokyo:guest Scientist At Bnl
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Mitsuda Setuo
Department Of Physics Faculty Of Science Tokyo University Of Science
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Mitsuda Setsuo
Department Of Physics Faculty Of Science Tokyo University Of Science Tokyo
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Mitsuda Setsuo
Department Of Physics Faculty Of Science Science University Of Tokyo
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Mitsuda Setsuo
Physics Department Science University Of Tokyo
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Yoshizawa Hideki
Institute For Solid State Physics University Of Tokyo
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Takagi Takeo
Department of Applied Physics, Fukui University
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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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Yaguchi Nariyasu
Department of Applied Physics, Faculty of Engineering, Fukui University
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Takagi Takeo
Department Of Applied Physics Fukui University
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Mitsuda Setsuo
Tokyo Univ. Sci. Tokyo
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Hosoito Nobuyoshi
Institute for Chemical Research, Kyoto University
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Mekata M
Fukui Univ. Fukui
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Mekata Mamoru
Department Of Applied Physics Faculty Of Engineering Fukui University
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Mekata Mamoru
Department Of Chemistry Faculty Of Science Kyoto University:
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Yaguchi N
Department Of Applied Physics Faculty Of Engineering Fukui University
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Yaguchi Nariyasu
Department Of Applied Physics Fukui University
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Sugino Tsukasa
Department of Applied Physics, Fukui University
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Yaguchi Nariyasu
Department Of Applied Physics Faculty Of Engineering Fukui University
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Yoshizawa Hideki
Institute For Solid State Physics The University Of Tokyo
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Sugino Tsukasa
Department Of Applied Physics Fukui University
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Shinjo Teruya
Institute For Chemical Research Kyoto Universiry
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Hosoito Nobuyoshi
Institute For Chemical Research Kyoto University
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Takagi Takeo
Department Of Applied Physics Faculty Of Engineering Fukui University
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Mitsuda S
Tokyo Univ. Sci. Tokyo
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