日本工业技术院电子技术综合研究所材料部磁性材料研究室,去年成功地非热平衡合成了磁光材料Bi_3Fe_5O_(12)。此种晶体结构为石榴石型,磁性转变温度600K(327℃)以上,属铁磁性材料。在633nm,法拉弟旋转系数高达-6.4×10~4度/cm。光吸收系数(α)为4～5× Japan Institute of Technology, Institute of Electronic Technology Materials Department of Magnetic Materials Laboratory, last year successfully non-thermal equilibrium synthesis of the magneto-optical material Bi_3Fe_5O_ (12). The crystal structure of garnet type, the magnetic transition temperature 600K (327 ℃) above, is a ferromagnetic material. At 633nm, Faraday’s rotation coefficient is as high as -6.4 × 10 ~ 4 degrees / cm. The light absorption coefficient (α) is 4 to 5 ×