磁记录媒体中磁性颗粒磁矩反转的模拟研究  

Simulating study on the switching of magnetic moment for grains in magnetic recording medium

作　　者：李双美[1] 

机构地区：[1]沈阳工程学院基础教学部,沈阳110136

出　　处：《沈阳工程学院学报（自然科学版）》2011年第2期190-192,共3页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：颗粒磁矩反转场的大小和反转速度是衡量磁记录写入效率的主要指标.利用LL方程描述在微波场作用下颗粒磁矩的动力学行为,考虑了颗粒磁矩各向异性场之间存在一定夹角,计算了颗粒磁矩之间相互作用对反转场大小以及反转速度的影响.The minimum switching field threshold and switching speed are key parameters for the magnetic recording in writing.This paper presents the dynamic precession of the moments of the grains based on LL equation,and the impact of the interaction between the grains on the minimum switching field threshold and the speed of the switching process in the microwave field is investigated.

关 键 词：微波辅助磁记录 交换作用 偶极作用 

分 类 号：O441.6[理学—电磁学]