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Chinese Physics, 2002, Vol. 11(4): 383-388    DOI: 10.1088/1009-1963/11/4/313
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Critical properties of the transverse ferromagnetic spin system with random single-ion anisotropy

Deng Ling-Ling (邓玲玲)a, Yan Shi-Lei (晏世雷)abc
a Department of Physics, Suzhou University, Suzhou 215006, China; b Provincial Laboratory of Thin Film Materials, Suzhou University, Suzhou 215006, ChinaCCAST (World Laboratory), Beijing 100080, China
Abstract  A transverse ferromagnetic spin-1 system with a random single-ion anisotropy is considered in the framework of an Ising model. The effective field theory and decoupling approximation are applied to the derivation of the expressions of magnetizations for a honeycomb lattice. Special emphasis is placed on the critical properties of the system. New critical properties are obtained in a certain range of single-ion anisotropy, random concentration, and transverse field. We discuss in detail the influence of the random concentration and transverse field on the critical properties. Some phenomena have not been discovered in previous reports. Detailed descriptions of the phase transition and magnetization curves are presented.
Keywords:  critical properties      transverse ferromagnetic spin system      random single-ion anisotropy  
Received:  05 July 2001      Revised:  09 December 2001      Accepted manuscript online: 
PACS:  75.10.Hk (Classical spin models)  
  75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)  
  75.40.Cx (Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))  
  75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))  
Fund: Project supported by the Natural Science Foundation of the Education Bureau of Jiangsu Province (Grant No 00SJB140003) and by the Thin Film Materials Key Laboratory Open Foundation of Jiangsu Province, China (Grant No K2022).

Cite this article: 

Deng Ling-Ling (邓玲玲), Yan Shi-Lei (晏世雷) Critical properties of the transverse ferromagnetic spin system with random single-ion anisotropy 2002 Chinese Physics 11 383

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