键阻辍Ising系统的相图和临界行为  

PHASE DIAGRAM AND CRITICAL BEHAVIOR OF ISING MODEL WITH BOND FRUSTRATION

作　　者：胡经国[1] 华宇[1] 

机构地区：[1]扬州大学理学院物理学系,江苏扬州225002

出　　处：《扬州大学学报（自然科学版）》2002年第1期30-32,共3页Journal of Yangzhou University：Natural Science Edition

摘　　要：用 Monte Carlo方法研究了铁磁、反铁磁混合键下 Ising系统的相图和临界行为 .结果发现 ,该系统仅在极低反铁磁浓度下存在稳定的铁磁相 ,而且随着反铁磁键浓度的增加 ,其相界增厚 ;The phase diagram and critical exponents of a square mixed bond Ising model are studied by MonteCarlo method. It shows that there exists ferromagnetic phase in lower antiferromagnetic concentration, and the phase boundary increases with increasing antiferromagnetic concentration. It also shows that the spin relation fluctuation depends on dynamic mechanism as well as on model of physics.

关 键 词：ISING系统 MONTE-CARLO模拟 相图 键阻辍 混合键Ising系统 临界行为 铁磁键 反铁磁键 

分 类 号：O482.5[理学—固体物理]