文章基本信息

标题：磁気転写光磁気読出しに適したガーネット膜の磁気諸量
本地全文：下载
作者：野村龍男 ; 岸田雅彦 ; 林直人等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2010
卷号：64
期号：7
页码：1007-1011
DOI：10.3169/itej.64.1007
出版社：The Institute of Image Information and Television Engineers
摘要：We used a magnetic transfer to magnetic garnet film to develop a system that can read out signals recorded in D-VTR magnetic tape. A key point to this system is developing garnet film that enables signal transfer with a minimum bit length (= 0.385μm). The garnet film must also have a Faraday effect large enough to produce the C/N (carrier-to-noise ratio) necessary for the system. We discuss the desirable magnetic properties of garnet film based on the analytical transfer model we developed. Ideal garnet films have a thickness of 0.3∼0.5μm, a Faraday coefficient of 7.5 deg/μm or more and optical absorption of around 0.5/μm. We also discuss the required C/N for a given tape speed to keep a bit error rate of 10^-4 or less and the experimentally obtained C/N .
关键词：磁気転写;ガーネット膜;光磁気読出し