%0 Journal Article
%T Thermodynamic properties of random transverse mixed Ising spin system with cryst al field<br>随机横场与晶场作用混合自旋系统的热力学性质
%A Zhang Ya-Nan
%A Yan Shi-Lei
%A <br>张雅男
%A 晏世雷
%J 物理学报
%D 2003
%I 
%X Making use of the effective field theory (EFT) and a cutting approximation, in the framework of Ising model, we investigate the thermodynamic properties of a random transverse mixed spin system with a crystal field. Special emphasis is placed on the influence of crystal field, transverse field and random concentration on phase transitions of the system. Our studies find that a smaller crystal field cannot change the percolation threshold of the critical transverse field in the presence of a random transverse field, and that the reentrant phenomena shall appear in the range of random concentration concerned when the transverse field takes a larger value, where as the reentrant phenomena do not occur and when the transverse field takes a smaller value. These new thermodynamic properties have not been reported in previous works so far as we know. We give a series of pha se diagrams and discuss them in detail.
%K mixed spin system
%K Ising model
%K thermodynamic properties
%K random transverse field<br>混合自旋系统，
%K 伊辛模型，
%K 热力学性质，
%K 随机横场
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=322751E794006E46&yid=D43C4A19B2EE3C0A&vid=286FB2D22CF8D013&iid=708DD6B15D2464E8&sid=61D405E14A6790AC&eid=5196430B1CB312AD&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=22