期刊论文详细信息
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 卷:426
Blume-Capel ferromagnet driven by propagating and standing magnetic field wave: Dynamical modes and nonequilibrium phase transition
Article
Acharyya, Muktish1  Halder, Ajay1 
[1] Presidency Univ, Dept Phys, 86-1 Coll St, Kolkata 700073, W Bengal, India
关键词: Blume-Capel model;    Monte Carlo simulation;    Propagating wave;    Standing wave;    Dynamic phase transition;   
DOI  :  10.1016/j.jmmm.2016.11.046
来源: Elsevier
PDF
【 摘 要 】

The dynamical responses of Blume-Capel (S = 1) ferromagnet to the plane propagating (with fixed frequency and wavelength) and standing magnetic field waves are studied separately in two dimensions by extensive Monte Carlo simulation. Depending on the values of temperature, amplitude of the propagating magnetic field and the strength of anisotropy, two different dynamical phases are observed. For a fixed value of anisotropy and the amplitude of the propagating magnetic field, the system undergoes a dynamical phase transition from a driven spin wave propagating phase to a pinned or spin frozen state as the system is cooled down. The time averaged magnetisation over a full cycle of the propagating magnetic field plays the role of the dynamic order parameter. A comprehensive phase diagram is plotted in the plane formed by the amplitude of the propagating wave and the temperature of the system. It is found that the phase boundary shrinks inward as the anisotropy increases. The phase boundary, in the plane described by the strength of the anisotropy and temperature, is also drawn. This phase boundary was observed to shrink inward as the field amplitude increases.

【 授权许可】

Free   

【 预 览 】
附件列表
Files Size Format View
10_1016_j_jmmm_2016_11_046.pdf 619KB PDF download
  文献评价指标  
  下载次数:0次 浏览次数:0次