中国物理B ›› 1998, Vol. 7 ›› Issue (11): 832-840.doi: 10.1088/1004-423X/7/11/005

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STRUCTURAL PHASE TRANSITION IN BISMUTH HIGH-Tc SUPERCONDUCTING MATERIALS UNDER SYMMETRY OF D174h(I4/mmm)

潘国强   

  1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
  • 收稿日期:1997-09-05 修回日期:1998-05-07 出版日期:1998-11-20 发布日期:1998-11-20
  • 基金资助:
    Project supported by the Foundation of State Educational Commission of China for outstanding young teachers in University.

STRUCTURAL PHASE TRANSITION IN BISMUTH HIGH-Tc SUPERCONDUCTING MATERIALS UNDER SYMMETRY OF D174h(I4/mmm)

Pan Guo-qiang (潘国强)   

  1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
  • Received:1997-09-05 Revised:1998-05-07 Online:1998-11-20 Published:1998-11-20
  • Supported by:
    Project supported by the Foundation of State Educational Commission of China for outstanding young teachers in University.

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摘要： By applying the Landau's second-order phase transition theory, the symmetry changes due to the continuous phase transition from the phase of D174h symmetry were studied. The possible low symmetry phases were obtained by minimizing the thermodynamic potential expanded in the order parameters up to fourth order. Some related experimental results were discussed.

Abstract: By applying the Landau's second-order phase transition theory, the symmetry changes due to the continuous phase transition from the phase of D174h symmetry were studied. The possible low symmetry phases were obtained by minimizing the thermodynamic potential expanded in the order parameters up to fourth order. Some related experimental results were discussed.

中图分类号: 

  • 74.72.Hs
74.62.-c (Transition temperature variations, phase diagrams) 74.25.Bt (Thermodynamic properties)