a Department of Physics, Liaoning University, Shengyang 110036, China; b College of Sciences, Northeastern University, Shenyang 110006, China; c International Center for Material Physics, Chinese Academy of Sciences, Shengyang 110015, China; d School of Chemical Science & Engineering, Liaoning University, Shengyang 110036, China
Abstract A spin-1/2 and spin-3/2 mixed Ising system in a random field is studied by the use of effective-field theory with correlations. The phase diagrams and thermal behaviours of magnetizations are investigated numerically for the honeycomb lattice (z=3) and square lattice (z=4) respectively. The tricritical behaviours for both honeycomb and square lattices, as well as the reentrant behaviour for the square lattice are found.
Received: 14 January 2004
Revised: 12 July 2004
Accepted manuscript online:
(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
Fund: Project supported by the Foundation of National 211 Engineering Program.
Cite this article:
Liang Ya-Qiu (梁雅秋), Wei Guo-Zhu (魏国柱), Zhang Qi (张起), Qiu Wei (邱巍), Zang Shu-Liang (藏树良) Magnetic properties of mixed Ising system with random field 2004 Chinese Physics 13 2147
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