激光照射下磁光盘片结构的热学优化新方法  

A New Thermal Design Method of Laser Radiated MO Multilayer

作　　者：周健[1] 宋惠忠[1] 荀坤[1] 沈德芳[1] 

机构地区：[1]中国科学院上海冶金研究所,上海200050

出　　处：《光学学报》1999年第9期1197-1202,共6页Acta Optica Sinica

摘　　要：以激光照射下 Ｔｂ Ｆｅ Ｃｏ 四层结构为例， 基于麦克斯韦（ Ｍａｘｗ ｅｌｌ） 方程和坡印廷（ Ｐｏｙｉｎｇｔｉｎｇ）矢量定理， 提出了一种磁光盘片膜层结构的热学优化新方法。与常规的设计方法相比， 该方法不仅考虑了实际应用中的道跟踪需要， 而且运算更为简便， 因而对其它多层膜体系的优化设计有一定的参考价值。实验上， 根据该设计用直流共溅射方法成功地制备了 Ｔｂ Ｆｅ Ｃｏ 四层膜并进行了相关测试， 结果表明， 设计的样盘有良好的静、动态读写性能。Based on the Maxwell equations and Poyingting vector theoresm, a new thermal design method of magneto optical (MO) multilayer is presented taking the laser radiated TbFeCo quadrilayer as an example. Compared with the conventional design method, the new method not only cosideres the practical need of tracking servo, but alse shows great efficiency in calculation. It implies that this method can be used to the structure designing of other multilayers. According to the new designing, a TbFeCo quadrilayer was successfully made using the dc sputturing methed. Corresponding static and moving measurements are carried out, which show good effects of reading and writing.

关 键 词：磁光盘 微盘 直流共溅射 热学优化 激光照射 

分 类 号：TP333.43[自动化与计算机技术—计算机系统结构]