Universality Class of Magnetic Phase Transition in the Triangular Lattice Antiferromagnet CsMnI_3

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概要

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• Universality classes of successive magnetic phase transitions in the triangular latticeantiferromagnet CsMnI, are studied by measuring the critical exponents y and v usingneutron scattering. The critical exponents of the successive transitions at T.. = 11.2 Kand T..=S.2K, which correspond to orderings of magnetic moments parallel andperpendicular to the c-axis, respectively, are determined to be 7,=1.l2f0.07, v,0.59;0.03 (I..) and y. = 1.04:0.03, v. =0.56:0.02 (I..). These values and thep exponents /7,=0.32f0.0l, p. =0.35 +o.oz measured in our previous work do notagree with a theory which predicted the three dimensional XY universality for boththe transitions. This is in contrast with the satisfactory agreement of critical ex-ponents of CsMnBr, with a theory of the novel three-dimensional Z. X S. universality.A uniform magnetization parallel to the c-axis in terms of the three sublattices in thec-plane is found to increase slowly below T...[universality class, critical exponents, magnetic phase transition, triangular Rat- lg Lice antiferromagnet, CsMnI, neutron scatteringl

• 社団法人日本物理学会の論文
• 1991-05-15

著者

• AJIRO Yoshitami

  Department of Chemistry, Graduate School of Science, Kyoto University

• Inami Toshiya

  Institute For Solid State Physics University Of Tokyo:advanced Science Research Center Japan Atomic

• Inami Toshiya

  Department Of Chemistry Faculty Of Science Kyoto University

• ENDOH Yasuo

  Department of Physics,Tohoku University

• Kobayashi Hisao

  Department Of Physics Graduate School Of Science Tohoku University

• KADOWAKI Hiroaki

  Institut Laue Langevin

• Inami T

  Department Of Physics Chuo University

• Kadowaki H

  Tokyo Metroporitan Univ. Tokyo

• Kadowaki Hiroaki

  The Institute For Soild State Physics The University Of Tokyo

• Kadowaki Hiroaki

  Department Of Physics Tokyo Metroporitan University

• Kamimura Hirohiko

  Department Of Materials Science Hiroshima University

• Kawanaka H

  National Inst. Advanced Industrial Sci. And Technol. Ibaraki Jpn

• Nakajima Kenji

  Department of Physics, Tohoku University

• Ajiro Yoshitami

  Department Of Applied Physics Faculty Of Engineering Fukui University

• Kato Hideyuki

  Department Of Physics Faculty Of Science Hokkaido University

• Kadowaki Hiroaki

  The Institute For Solid State Physics The University Of Tokyo

• Endoh Yasuo

  Department Of Chemistry Kyoto University

• Nakajima Kenji

  Department Of Nutrition Faculty Of Nutrition Koshien University

• Nakajima Kenji

  Department Of Applied Pharmacology Kyoto Pharmaceutical University

• Nakajima Kenji

  Department Of Physics Faculty Of Science Tohoku University

• Endoh Yasuo

  Department of Physics,Faculty of Science,Tohoku University

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