无序二元铁磁合金对振荡磁场的磁响应
Magnetic response of a disordered binary ferromagnetic alloy to an oscillating magnetic field
摘要：
本文采用局域自旋更新Metropolis算法的蒙特卡罗模拟方法，研究了正方晶格上$A_{p}B_{1-p}$型无序二元铁磁合金的非平衡相变性质和定态处理。经过详细的分析，我们发现该体系表现出许多有趣的和不寻常的热行为和磁行为，如动态相变点的位置随外加磁场的振幅和周期以及$A-$型组分的活性浓度而显著变化。许多努力也致力于澄清磁滞工具，如磁化率，动态回路面积以及随时间变化的磁化强度和外部随时间变化的外加场之间的动态相关性，作为周期和场幅度的函数，以及$A-$型组分的活性浓度，并且已经报道了突出的物理发现，以便更好地理解本系统的动态过程。
英文摘要：
By means of Monte Carlo simulation with local spin update Metropolis algorithm, we have elucidated non-equilibrium phase transition properties and stationary-state treatment of a disordered binary ferromagnetic alloy of the type $A_{p}B_{1-p}$ on a square lattice. After a detailed analysis, we have found that the system shows many interesting and unusual thermal and magnetic behaviors, for instance, the locations of dynamic phase transition points change significantly depending upon amplitude and period of the external magnetic field as well as upon the active concentration of $A-$ type components. Much effort has also been dedicated to clarify the hysteresis tools, such as coercivity, dynamic loop area as well as dynamic correlations between time dependent magnetizations and external time dependent applied field as a functions of period and amplitude of field as well as active concentration of of $A-$ type components, and outstanding physical findings have been reported in order to better understand the dynamic process underlying present system.
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