【摘要】 利用Monte Carlo方法研究了二维磁性Heisenberg薄膜在有交换相互作用、各向异性、偶极相互作用等因素共同作用下的相变行为,重点讨论了薄膜的自旋重取向和磁畴的变化.模拟结果表明:在一定的参数范围内,随着温度的升高,系统的自旋取向将由垂直向平行于平面方向转变;系统在不同情况下出现了水平条形畴和垂直条形畴,并研究了交换相互作用、各向异性及温度对基态条形畴的影响.更多还原

【Abstract】 A magnetic monolayer with competing long-range dipolar interaction,short-range interaction and magnetic uniaxial anisotropy is simulated by employing Monte Carlo method.The results show that in a range of parameters,a transition from out-of-plane to in-plane ordering with the increase of the temperature is possible.Meanwhile,the different striped domain patterns are found and reveal the microstructure of the magnetization transition at the ground state.The influence of the various interactions on the structure of the striped phase and reorientation behavior has been discussed.更多还原