Magnetic Phase Transition of the Triangular Lattice Antiferromagnet CsMnI_3
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概要
- 論文の詳細を見る
The universality class of successive magnetic phase transitions in the triangular Rat-lice antiferromagnet CsMnl, is studied by measuring the critical exponent fi usingneutron scattering. A weak Ising anisotropy brings about two successive transitions at7'..=11.2K and 7'.2=8.2K which correspond to ordering of magnetic momentsparallel and perpendicular to the c-axis, respectively. The critical exponents for theparallel and perpendicular components of the sublattice magnetization, p,= 0.32 $ 0.01 and p. = 0.35 S 0.01, are close to or in excellent agreement with the exponent for the three dimensional X Y symmetry of the order parameter in spite of thefact that the system has the Ising spin symmetry, in accord with a prediction. Theyremarkably differ from p=0.25 f 0.01 for CsMnBr. which has an XY anisotropy andbelongs to the three dimensional Z. X .s'. universality.[magnetic phase transition, critical exponent, triangular lattice antiferromagnet, ll CsMnI., neutron scatteringl
- 社団法人日本物理学会の論文
- 1990-11-15
著者
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AJIRO Yoshitami
Department of Chemistry, Graduate School of Science, Kyoto University
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Inami Toshiya
Institute For Solid State Physics University Of Tokyo:advanced Science Research Center Japan Atomic
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Inami Toshiya
Department Of Chemistry Faculty Of Science Kyoto University
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Kobayashi Hisao
Department Of Physics Graduate School Of Science Tohoku University
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Inami T
Department Of Physics Chuo University
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Kadowaki H
Tokyo Metroporitan Univ. Tokyo
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Kadowaki Hiroaki
The Institute For Soild State Physics The University Of Tokyo
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Kadowaki Hiroaki
Department Of Physics Tokyo Metroporitan University
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Kamimura Hirohiko
Department Of Materials Science Hiroshima University
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Kawanaka H
National Inst. Advanced Industrial Sci. And Technol. Ibaraki Jpn
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Ajiro Yoshitami
Department Of Applied Physics Faculty Of Engineering Fukui University
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Kato Hideyuki
Department Of Physics Faculty Of Science Hokkaido University
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Kadowaki Hiroaki
The Institute For Solid State Physics The University Of Tokyo
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