Cu添加石榴石磁光薄膜读,写性能的研究

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，对记录畸起着稳定的作用。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。

A Study of Read-Write Performance of Cu Doped Garnet Films for Magneto-Optical Recording

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 andbiased magnetic field, it is easy to take the read-write process using Cr layer as reflectivelayer when the pulse width is 50 ns, the writing power can be lowered to 5 mW.