中国物理B ›› 2004, Vol. 13 ›› Issue (4): 556-560.doi: 10.1088/1009-1963/13/4/026

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Spin flop in one-dimensional Heisenberg antiferromagnet KCuF3

史庆藩1, 李良生1, 王琪2   

  1. (1)Department of Physics, School of Science, Beijing Institute of Technology, Beijing 100081, China; (2)Department of Physics, Yancheng Teacher's Collegy, Yancheng 224002, China
  • 收稿日期:2003-08-01 修回日期:2003-10-25 出版日期:2004-04-22 发布日期:2004-04-20
  • 基金资助:
    Project supported by the Foundation of State Education Commission of China for Returned Chinese Scholars (Grant No LQ2000-2).

Spin flop in one-dimensional Heisenberg antiferromagnet KCuF3

Shi Qing-Fan (史庆藩)a, Li Liang-Sheng (李良生)a, Wang Qi (王琪)b   

  1. a Department of Physics, School of Science, Beijing Institute of Technology, Beijing 100081, China; b Department of Physics, Yancheng Teacher's Collegy, Yancheng 224002, China
  • Received:2003-08-01 Revised:2003-10-25 Online:2004-04-22 Published:2004-04-20
  • Supported by:
    Project supported by the Foundation of State Education Commission of China for Returned Chinese Scholars (Grant No LQ2000-2).

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摘要： Following Yamada and Kato [J. Phys. Soc. Japan 63 (1994) 289], we have calculated the frequency－field diagram of antiferromagnetic resonance of KCuF_3 using an eight-sublattice model and mean field approximation. A spin flop is found to take place from the [110]_p to a direction perpendicular to [110]_p in the c-plane at H\simeq 42172A/m, which is in good agreement with the data obtained by measuring magnetic susceptibility.

关键词: KCuF_3, antiferromagnetic resonance, sublattice

Abstract: Following Yamada and Kato [J. Phys. Soc. Japan 63 (1994) 289], we have calculated the frequency－field diagram of antiferromagnetic resonance of KCuF$_3$ using an eight-sublattice model and mean field approximation. A spin flop is found to take place from the [110]p to a direction perpendicular to [110]p in the c-plane at $H\simeq 42172$A/m, which is in good agreement with the data obtained by measuring magnetic susceptibility.

Key words: KCuF3, antiferromagnetic resonance, sublattice

中图分类号:  (Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)

  • 76.50.+g
75.50.Ee (Antiferromagnetics) 75.30.Cr (Saturation moments and magnetic susceptibilities) 75.10.Jm (Quantized spin models, including quantum spin frustration)