发明名称 Thermomagnetic recording method
摘要 The present invention relates to a thermomagnetic recording method using a thermomagnetic recording medium formed in a laminated structure of, at least, first and second magnetic thin films (11, 12, 13) each having perpendicular magnetic anisotropy, wherein said second magnetic thin film (12) is formed of first and second component films (121, 122) laminated to each other by exchange coupling, said first and second component films (121, 122) having characteristics HC21R > HC22Rand TC21 < TC22, HC21R and HC22R representing coercive forces of said first and second component films (121, 122) at room temperature and TC21 and TC22 representing the Curie temperatures of the same. This method comprises the steps of: modulating a first heating condition to heat the medium to a first temperature T1 being virtually in the vicinity of the Curie temperature TC1 of said first magnetic thin film (11) and not causing reversal of the magnetic moment in said second magnetic thin film (12) and a second heating condition to heat the medium to a second temperature T2 being over said Curie temperature TC1 and sufficient to cause reversal of the magnetic moment in said second magnetic thin film (12) in accordance with an information signal to be recorded, and adapting in the course of the medium cooling down from the first and second heated states such that the magnetic moments within said second magnetic thin film (12) are brought into the same state. <IMAGE>
申请公布号 EP0901121(A2) 申请公布日期 1999.03.10
申请号 EP19980122628 申请日期 1989.07.12
申请人 SONY CORPORATION 发明人 KANEKO,MASAHIKO;ARATANI,KATSUHISA;MUTO, YOSHIHIRO
分类号 G11B11/105;(IPC1-7):G11B11/10 主分类号 G11B11/105
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