Metallic oxide magnetic body and magnetic film

Abstract

Abstract PURPOSE:To obtain the titled magnetic body suitable as the material for a photoelectromagnetic recording medium having high recording sensitivity, excellent resistance to corrosion by oxidation and light transmissive property by constituting the body of Ba, Sr, Ga, Sc, Ti, Sn, Zn, Fe, and O shown by a specified gneral formula. CONSTITUTION:The metallic oxide magnetic body consists of a compd. shown by the general formula BaxSr1-xO.(Gay.MezFe2-y-m/3z)O3 [where Me is >=1 kind of element among Sc, Ti, Sn, and Zn, (m) is the number of the valances of the iron, and 5.0<=n<=6.0, 0<x<1, 0<y<=0.8, and 0<z<=0.8]. The magnetic body has the Curie temp. Tc and the coersive force Hc within an appropriate range necessary for obtaining high recording sensitivity, and hence has less extent of deterioration of the magnetic characteristic with time. Said magnetic body is obtained by mixing and crushing a specified amt. of BaCO3, SrCO3, Fe2O3, and Ga2O3 and >=1 kind among Sc2O3, TiO2, SnO2, and ZnO, molding the mixture in a metallic mold, and then sintering the molded body at about 1,200-1,400 deg.C.

Inventors

• 👤 Nobuyuki Koinuma
• 👤 鯉沼　宜之
• 👤 Hitoshi Nakamura
• 👤 均 中村
• 👤 Hajime Machida
• 👤 元 町田

Bibliographic Details