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Chin. Phys. B, 2014, Vol. 23(5): 057501    DOI: 10.1088/1674-1056/23/5/057501
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Monte Carlo study of the magnetic properties of spin liquid compound NiGa2S4

Zhang Kai-Chenga, Li Yong-Fengb c, Liu Yongd, Chi Fenge
a College of Mathematics and Physics, Bohai University, Jinzhou 121013, China;
b Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia Universityof Science and Technology, Baotou 014010, China;
c School of Mathematics, Physics and Biological Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;
d State Key Laboratory of Metastable Materials Science & Technology and College of Science, Yanshan University, Qinhuangdao 066004, China;
e College of Engineering, Bohai University, Jinzhou 121013, China
Abstract  The magnetic properties of two-dimensional antiferromagnet NiGa2S4 have attracted much attention and yet some problems are far from being solved. We investigate the magnetic properties of NiGa2S4 by Monte Carlo simulations. A new spin-interacting model is proposed to describe the system, and the specific heat together with the doping effect of nonmagnetic impurity is studied by simulations. The double peaks of the specific heat as well as other behaviors are well reproduced. We also compare our results with those of other models, and the underlying physics is discussed.
Keywords:  spin liquid state      specific heat      magnetization      correlation length  
Received:  26 July 2013      Revised:  30 October 2013      Published:  15 May 2014
PACS:  75.10.Hk (Classical spin models)  
  75.40.Cx (Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))  
  75.50.Ee (Antiferromagnetics)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11247428, 11247210, 10974228, and 61274101) and the Natural Science Foundation of Liaoning Province, China (Grant No. 20121078), and the Education Office of Liaoning Province, China (Grant No. L201197).
Corresponding Authors:  Zhang Kai-Cheng     E-mail:  kczhang@yeah.net
About author:  75.10.Hk; 75.40.Cx; 75.50.Ee

Cite this article: 

Zhang Kai-Cheng, Li Yong-Feng, Liu Yong, Chi Feng Monte Carlo study of the magnetic properties of spin liquid compound NiGa2S4 2014 Chin. Phys. B 23 057501

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