摘要
讨论了铁磁性纳米线磁滞回线的特点及其影响因素，使用蒙特卡洛方法模拟了在周期性边界条件下的磁性纳米线阵列的磁滞回线，研究了纳米线的几何因素对铁磁性纳米线阵列磁滞回线的影响．研究发现，纳米线的直径不均匀程度越大，纳米线阵列磁滞回线的剩余磁化强度越小，饱和磁化强度越大，矫顽力则基本上不受影响；在一定条件下，纳米线长度的增加，则会使纳米线阵列磁滞回线的剩余磁化强度、矫顽力和饱和场强均有所增大，而纳米线长度的不均匀程度则对纳米线阵列的磁滞回线没有明显的影响。
Under the cyclic boundary conditions, the hysteresis loops of the nanowire arrays have been simulated by Monte Carlo method, the affection of geometrical elements of nanowire on hysteresis loops of nanowire arrays have been studied, too. As a result, when the disorder degree of the diameter increases, the hysteresis loops of the nanowire arrays shows the higher saturation field and the higher coercive force. The disorder degree of the length of nanowires has little affection on the hysteresis loops. When the magnetic moment of the nanowires increases because of the increase of the length, remanence, coercive force and saturation field increase together, but susceotibilitv remains unchanged along the whole loop.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第A03期1068-1070,共3页
Journal of Functional Materials
基金
中国民航大学科研基金资助项目（05yk25s）.
关键词
纳米线阵列
磁滞回线
蒙特卡洛
nanowire arrays
hysteresis loops
monte carlo simulation
