中国物理B ›› 2000, Vol. 9 ›› Issue (9): 649-651.doi: 10.1088/1009-1963/9/9/002

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PHASE TRANSITION PROPERTIES OF A TWO-COMPONENT FINITE MAGNETIC SUPERLATTICE

王晓光, 刘宁宁, 潘少华, 杨国桢   

  1. Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences 100080, China
  • 收稿日期:2000-03-22 出版日期:2000-09-15 发布日期:2005-06-10

PHASE TRANSITION PROPERTIES OF A TWO-COMPONENT FINITE MAGNETIC SUPERLATTICE

Wang Xiao-guang (王晓光), Liu Ning-ning (刘宁宁), Pan Shao-hua (潘少华), Yang Guo-zhen (杨国桢)   

  1. Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences 100080, China
  • Received:2000-03-22 Online:2000-09-15 Published:2005-06-10

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摘要： We study an (l,n) finite superlattice, which consists of two alternative magnetic materials(components) of l and n atomic layers, respectively. Based on the Ising model, we examine the phase transition properties of the magnetic superlattice. By transfer matrix method we derive the equation for Curie temperature of the superlattice. Numerical results are obtained for the dependence of Curie temperature on the thickness and exchange constants of the superlattice.

Abstract: We study an (l,n) finite superlattice, which consists of two alternative magnetic materials(components) of l and n atomic layers, respectively. Based on the Ising model, we examine the phase transition properties of the magnetic superlattice. By transfer matrix method we derive the equation for Curie temperature of the superlattice. Numerical results are obtained for the dependence of Curie temperature on the thickness and exchange constants of the superlattice.

Key words: phase transitions, finite magnetic superlattice, Ising model, transfer matrix method.

中图分类号:  (Classical spin models)

  • 75.10.Hk
75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 75.40.Mg (Numerical simulation studies) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))