Study on Preparation of High Quality Magneto-optical Oxide Films by Gel-Coating Technique

双替代稀土铁石榴石（Bi ： RlG）薄膜已被承诺用于下一代超高密度磁光学（MO）存储介质，因为在蓝色波长区域内的一个大型MO有效性在商业蓝光激光二极管中进行合作，并实现商业蓝光激光二极管。在与小型光学设备连接的情况下，已请求的电影类型光学隔离器。由于这个目的，带有双-RlG电影的磁光晶体是一个提名候选人。实现这些关键技术是将高质量结合在一起的： RlG电影在低温度下，是调查的主要主题。（1） Synthesis of high quality Bi ： RlG films Bi：RlG films could be fabricated by coating gels prepared by the“glycol gel process”and rf-sputtering。获得无瑕疵和光学平坦的制造条件： RlG电影具有良好的磁性性能，可以在实验中确定。（2） Low temperature synthesis of Bi ： RlG films...... Formation of Bi ： RlG films on polycarbonate plastic plates is desirable to use MO-memory disk。石榴石的低水晶化温度是独立的。红外线脉冲样辐射的快速退火已经发现了非常有用的低有效的水晶化温度的石榴石，允许使用塑料基板。这一方法也被发现用于用热退火制造磁光晶体的有用性。（3） Combined with （1） and （2）， we could successfully construct magnetopotonic crystals with a multi-layer system of （SiO D22/TaイD22イD2）イD15イD1Bi：YIG（TaイD22イD2OイD25イD2/SiOイD22イD2）イD15イD1。《电影的光学和磁性光学特性的光学特性与那些通过理论分析评估的光学特性》。（4） Construction of a film-type optical isolator operating at\=1.3\m utilizing magnetophonic crystals is now under way。

Bi-substituted rare-earth iron garnet (Bi : RlG) films have been promised for ultra-high density magneto-optical (MO) storage media in the next generation, because of a large MO-efficient in the blue wavelength region in cooperation with realization of commercial blue-light laser diodes. In connection with down-sized optotronic devices, film-type optical isolators have been requested. For this purpose, magnetophotonic crystals with Bi-RlG film is a promising candidate. A key technology for realizing these is to synthesize high quality Bi : RlG films at low temperature, which is the major theme of the investigation.(1) Synthesis of high quality Bi : RlG films………Bi : RlG films could be fabricated by coating gels prepared by the "glycol gel process" and rf-sputtering. The fabrication conditions to obtain defect-free and optically flat Bi : RlG films with good magnetic properties were determined experimentally.(2) Low temperature synthesis of Bi : RlG films………Formation of Bi : RlG films on polycarbonate plastic plates is desirable to use MO-memory disks. Lowering crystallization temperature of garnet is indispensable. Rapid annealing of pulse-like irradiation of infra-red light was found to be very useful to lower effective crystallization temperature of garnet to allow to use plastic substrates. This method was also found to be useful for fabrication of magnetophotonic crystals by thermal annealing.(3) Combined with (1) and (2), we could successfully construct magnetopotonic crystals with a multi-layer system of (SiOィイD22ィエD2/TaィイD22ィエD2)ィイD15ィエD1Bi:YIG(TaィイD22ィエD2OィイD25ィエD2/SiOィイD22ィエD2)ィイD15ィエD1. The optical and magneto-optical properties of the films coincided quantitatively with those evaluated by theoretical analysis.(4) Construction of a film-type optical isolator operating at λ=1.3μm utilizing magnetophonic crystals is now under way.