光学学报, 1995, 15 (11): 1560, 网络出版: 2007-08-17
Cu添加石榴石磁光薄膜读、写性能的研究
A Study of Read-Write Performance of Cu Doped Garnet Films for Magneto-Optical Recording
摘要
用热分解法在玻璃衬底上制备了Cu添加的Bi,Al:DyIG磁光薄膜,对其静态读、写性能进行了详细的研究。Cu添加的薄膜可获得高的矫顽力和好的矩形化,对记录畴起着稳定的作用。同时,适量Cu的添加可起到细化晶粒的作用,对减少晶界噪声有利。用He-Ne激光器做记录光源,在一定的写入功率、读出功率和偏置磁场下,当脉宽为50 ns时,读和写及擦除过程很容易进行。
Abstract
Cu doped Bi, Al: DyIG films have been prepared onto glass substrates bypyrolysis method. The static read-write performance have been studied. Cu doped garnetfilms can be obtained with high coercive force and good Farady hysteresis loops, and it isuseful to stabilize the written domains.Also, appropraite addition of Cu can make grainsize small, and it benefits to reducing grain boundary noise. A He-Ne laser device wasused as recording source. Under certain conditions of writing power, read-out power and biased magnetic field, it is easy to take the read-write process using Cr layer as reflective layer when the pulse width is 50 ns, the writing power can be lowered to 5 mW.
周勇, 杜腾达, 沈德芳, 干福熹. Cu添加石榴石磁光薄膜读、写性能的研究[J]. 光学学报, 1995, 15(11): 1560. 周勇, 杜腾达, 沈德芳, 干福熹. A Study of Read-Write Performance of Cu Doped Garnet Films for Magneto-Optical Recording[J]. Acta Optica Sinica, 1995, 15(11): 1560.