透光性ビスマス置換希土類鉄ガーネット型焼成体を用いた磁気光学デバイス及び該焼成体の製造方法

摘要

Alight-transmitting bismuth-substituted rare-earth iron garnet-type calcined body expressed by R 3-x Bi x Fe 5 O 12 and having an average crystal particle diameter of 0.3 - 10 micrometers, and a magneto-optical device using said calcined body ; wherein R is at least one kind of elements selected from a group consisting of Y and lanthanoids, and x is a number from 0.5 to 2.5.