Modeling relaxation-to-creep transition of domain-wall motion in ultrathin ferromagnetic and ferroelectric films

摘要：

Monte Carlo simulations of a two-dimensional, randomfield Isirig model with an ac driving field arc used to study the relaxntion-to-creep transition for domain-wall motion in ultralhin ferromagnetic and ferroelectric films at low temperatures. The resultant complex. susceptibility x=x -ix agrees well with experiment: The flattened semicircle and straight line in the x-x plot are Cole-Cole signatures of relaxation and creep states, respectively. The exponent β describing the creep motion is measured, and an intermediate state between the relaxation aud creep states is identified.

作者: N.J. Zhou B. Zheng D. P. Landau

作者单位: Zhejiang University. Zhejianq Institute of Modern Physics. Hanqzlmv 310027. P.B. China Center for Simulational phaysics, The University of Georgia, Athens. GA 30602.U.S.A.

会议类型: 国际会议

会议名称: International Workshop on Statistical Physics and Computer Sciences(统计物理与计算机科学交叉研究国际研讨会 )

会议地点: 北京

会议语种:英文

页码: 301-304

在线出版日期: 2010-07-08（万方平台首次上网日期，不代表论文的发表时间）