Study on the properties and application of rare earth-iron group multi-component amorphous thin films

稀土-铁族多元非晶薄膜性能及应用研究

基本信息

批准号：
60420034
负责人：
UCHIYAMA Susumu
金额：
$ 14.91万
依托单位：
NAGOYA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1988
项目状态：
已结题

项目摘要

Rare earth - iron group transition metal (RE-TM) amorphous films have been systematically studied for the fundamental understanding of their magnetic and magnetooptical properties. From the application point of view, high quality magnetooptical recoding materials have been also developed.The important results and findings are summarized as follows. 1. Systematic measurements of magnetooptical spectra for various RE-TM films and their interpretation based on the band structure. 2. Observation and understanding of the contribution of various RE to the perpendicular magnetic anisotropy and the magnetostriction. 3. Improvement of the corrosion resistance and development of ultra high density recording materials for magnetooptical disks. 4. Inducement of perpendicular magnetic anisotropy using artificial superlattices.The most important results of this research is that the magnetoptical effects of various RE are systematically understood. Especially it is the first time that the contribution of 4f electrons to the magnetooptical effect is experimentally and systematically proved. As for the perpendicular anisotropy and magnetostriction, systematic study is still open for further experiments but some interesting results, such as the magnetostriction of amorphous Gd and the perpendicular anisotropy of ErCo compositionally modurated films, have been found.We have also developed a new magnetooptical recoding material for ultra high density optical disk storages using short wavelength laser. Nd alloy/Tb alloy aouble layer films showed Kerr rotation lager than TbFe and the magnetization perpendicular to the film plane.

稀土 - 铁群过渡金属（RE -TM）无定形膜进行了系统的研究，以基本了解其磁性和磁磁性特性。从应用的角度来看，还开发了高质量的磁置重新编码材料。重要的结果和发现总结如下。 1。针对各种RE-TM膜的磁磁光谱的系统测量及其基于频带结构的解释。 2。观察和理解各种RE对垂直磁各向异性和磁曲折的贡献。 3。改善磁盘磁盘超高密度记录材料的耐腐蚀性和开发。 4。使用人工超级晶格诱导垂直磁各向异性。这项研究最重要的结果是，各种RE的磁对效应是系统地理解的。尤其是4F电子对磁磁效应的贡献首次在实验和系统上证明。至于垂直的各向异性和磁通状学，系统的研究仍在开放以进行进一步的实验，但一些有趣的结果，例如无定形GD的磁截图以及ERCO组成构成的垂直型膜的磁性膜。使用短波长激光器的超高密度光磁盘储藏的材料。 ND合金/TB合金层膜比TBFE显示了Kerr旋转啤酒，并且垂直于膜平面的磁化强度。