快速循环晶化Ａｌ／ＢｉＧａＤｙＩＧ双层膜的研究结果表明，由于晶粒细化及膜层间干涉增强效应，在０．１～１．３μｍ膜厚范围．其平均有效法拉第角比单层膜增加了０．２５°，且随循环次数增加而增大。同时．部分ＡＩ３＋离子在退火期间扩散进石榴石的八面体和四面体位，导致居里温度下降（１４０～１６１μ）。这些结果对提高石榴石磁光盘信噪比以及增大记录密度是极有意义的。 The results of rapid cycling crystallization of Al / BiGaDyIG bilayer films show that the film thickness ranged from 0.1 to 1.3 μm due to grain refinement and enhancement of inter-layer interference. The average effective Faraday’s angle increases by 0.25 ° compared with the monolayer film, and increases with the increase of the number of cycles. Simultaneously. Some AI3 + ions diffuse into the octahedral and tetrahedral sites of the garnet during annealing, resulting in a drop in the Curie temperature (140-161 μ). These results are of great significance for improving the signal-to-noise ratio of garnet magneto-optical disks and for increasing the recording density.