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    • 14. 发明公开
    • METHOD OF MANUFACTURING PHOTOTHERMOMAGNETIC RECORDING FILM
    • VERFAHREN ZUR HERSTELLUNG PHOTOTHERMOMAGNETISCHER AUFZEICHNUNGSFILME。
    • EP0196332A1
    • 1986-10-08
    • EP84904169.4
    • 1984-11-15
    • NIPPON SHEET GLASS CO., LTD.
    • GOMI, ManabuABE, Masanori
    • G11B11/10H01F41/18
    • G03G5/16C23C14/08C23C14/3414G11B11/10589G11B11/10591H01F10/245
    • A photothermomagnetic recording film manufacturing method in which a perpendicular-magnetization film of a Bi-substituted rare earth iron garnet is formed on a substrate by sputtering a target consisting of an oxide which contains at least Bi atoms, Fe atoms, and rare earth atoms, and then depositing the atoms constituting the oxide which have been released from the target by the sputtering on a substrate which is maintained at a temperature of at most 700°C. Thus it is possible to obtain a perpendicular-magnetization film of Bi-substituted rare earth iron garnet which has a large Bi-substitution quantity (x), and consequently has an extremely large Faraday rotation angle θ F , a sufficiently large coercive force Hc, as well as a sufficiently small absorption coefficient a. Accordingly it is possible to manufacture a photothermomagnetic recording film which has extremely good photothermomagnetic recording characteristics. Moreover, since it is possible to select the quality of the substrate on which the photothermomagnetic recording film is to be formed, the method is extremely advantageous from the manufacturing point of view.
    • 制造过程 通过形成垂直磁化的Bi形状的照片热磁膜。 在由氧化物构成的靶上的基材上的稀土铁石榴石 至少Bi原子,Fe原子和稀土原子被溅射,并且通过溅射从靶释放的氧化物原子沉积在保持在700度的衬底上。 C以下。