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Permanent-magnet Faraday isolator with the field intensity of more than 3 tesla
Laser Physics Letters ( IF 1.7 ) Pub Date : 2019-11-14 , DOI: 10.1088/1612-202x/ab4fe3
E A Mironov , A V Voitovich , O V Palashov

A permanent-magnet system with a maximum magnetic field exceeding 3 T, which is a record value for Faraday isolators, has been created. The magnitude of the field in the system is close to the theoretical limit that can be achieved at an optimal magnetization distribution. This is possible thanks to the use in the central area of the system of magnetic conductors that possess a saturation induction higher than the residual induction of the strongest magnets and provide more optimal magnetization distribution than magnets. But the main feature of the system is control of demagnetizing fields in the center of the system by optimizing the position and shape of magnetic conductors, thus retaining the maximum volume of the magnets in the core of the system without the risk of their magnetization reversal. The technology of controlling demagnetizing fields by means of magnetic conductors is proven for the first time. The created system is promising for the development of Faraday isola...

中文翻译:

磁场强度大于3特斯拉的永磁法拉第隔离器

已经创建了一个最大磁场超过3 T的永磁体系统,这是法拉第隔离器的记录值。系统中的磁场强度接近于最佳磁化强度分布所能达到的理论极限。由于在磁导体系统的中心区域使用了这种磁导体,磁导体的饱和感应强度高于最强磁体的残留感应强度,并且比磁体具有更好的磁化分布。但是该系统的主要特征是通过优化磁导体的位置和形状来控制系统中心的消磁,从而将磁体的最大体积保留在系统磁芯中,而不会发生磁化反转的风险。借助磁导体控制消磁场的技术首次得到验证。创建的系统有望为法拉第隔离区的发展提供...
更新日期:2019-11-14
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