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基于Zn1-xMnxO纳米薄膜磁性研究的实验结果及相关理论,建立了一个包含多种交换作用的Ising多层膜模型,采用MonteCarlo模拟的Metropolis算法对于其铁磁序的成因进行了模拟研究.结果表明,Mn掺杂浓度(x)越低越有利于铁磁序的形成,但是x越低,系统的磁化强度越小,居里温度越低.载流子对铁磁序的形成所起的调节作用随着x的增大而增强,又随着磁各向异性常数(K)的增大而弱化.本研究预测了K的增大有利于铁磁序的形成,并能提高居里温度.
Based on the experimental results and related theories of magnetic study of Zn1-xMnxO nanostructured thin films, an Ising multilayers model with various exchange effects was established, and the genesis of the ferromagnetic order was simulated by Monte-Carlo-based Metropolis algorithm.The results show that , The lower the Mn doping concentration (x) is, the better the formation of ferromagnetic order, but the lower x is, the smaller the magnetization of the system is and the lower the Curie temperature is. The effect is weakened with the increase of x, and weakened with the increase of magnetic anisotropy constant (K) .This study predicts that the increase of K is favorable to the formation of ferromagnetic order and the increase of Curie temperature.