| 颗粒膜量子磁盘热稳定性的损伤扩散研究 |
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| 引用本文： | 郭子政,吴晓薇.颗粒膜量子磁盘热稳定性的损伤扩散研究[J].磁性材料及器件,2009,40(5):4-7,20. |
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| 作者姓名： | 郭子政 吴晓薇 |
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| 作者单位： | 1. 内蒙古师范大学,物理与电子信息学院,内蒙古呼和浩特,010022
2. 内蒙古农业大学,理学院,内蒙古呼和浩特,010018 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 利用损伤扩散方法研究了颗粒膜量子磁盘的热稳定性.考虑颗粒尺寸和位置的涨落并用Voronoi模型近似描述颗粒点阵.颗粒形状近似为扁圆柱形量子线,其磁矩垂直于薄膜平面.推导了颗粒间静磁相互作用的表达式.蒙特卡洛模拟表明,颗粒间的长程相互作用使损伤很难扩散,系统稳定性增强,而颗粒半径的涨落也利于系统的热稳定.
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| 关 键 词： | 颗粒膜 量子磁盘 稳定性 损伤扩散方法 |
Thermal Stability Study of the Granular Film Quantum Magnetic Disk by the Damage Spreading Method |
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| GUO Zi-zheng,WU Xiao-wei.Thermal Stability Study of the Granular Film Quantum Magnetic Disk by the Damage Spreading Method[J].Journal of Magnetic Materials and Devices,2009,40(5):4-7,20. |
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| Authors: | GUO Zi-zheng WU Xiao-wei |
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| Affiliation: | GUO Zi-zheng1,WU Xiao-wei2 1. College of Physics , Electronic Information,Inner Mongolia Normal University,Hohhot 010022,China,2. College of Science,Inner Mongolia Agricultural University,Hohhot 010018 |
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| Abstract: | In this paper,we study the thermal stability of the granular film quantum magnetic disk by using the damage spreading method. The fluctuation of the granular sizes and locations is taken into account and Voronoi model is used to describe the granular array. The granular shape is approximated as flat cylindrical nanowire,and its magnetic moment is perpendicular to the film plane. The granules locate in the centers of the units of the two-dimensional random lattice-Voronoi structure,and the radius meet to the... |
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| Keywords: | granular film quantum magnetic disk thermal stability damage spreading method |
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