混合记录热效应研究  

A Study on Heat Effect of Hybrid Recording

作　　者：裴先登[1] 夏又新[1] 黄浩[1] 王海卫[1] 

机构地区：[1]华中科技大学计算机学院外存储国家专业实验室,武汉430074

出　　处：《光学学报》2003年第9期1149-1152,共4页Acta Optica Sinica

基　　金：国家重点基础研究 973(G19990 330 );国家自然科学基金 (6 0 2 730 77)资助课题

摘　　要：在混合记录系统中 ,记录材料矫顽力依赖于温度 ,激光可用来降低矫顽力使得仅仅在激光加热的地方磁元翻转。对波导锥尖近场光斑和记录介质热响应进行了仿真研究 ,结果证实采用高矫顽力的磁记录材料。In a hybrid recording system, the coercivity is dependent on temperature, and an external laser can locally reduce its value to a point where the field from the magnetic head is sufficient to switch the magnetization and this occurs only where this area crosses the magnetic field from the head. The rectangle waveguide near field optical spot and the recording media heat effect have been studied. The results indicate that the rectangle waveguide near field heating technology can break superparamagnetic limit.

关 键 词：混合记录 矫顽力 双梯度记录 超顺磁极限 近场热效应 波尔兹曼常量 道密度 热传导方程 磁记录材料 

分 类 号：TQ581[化学工程—精细化工] O441.2[理学—电磁学]