公开(公告)号：EP0901121A2

公开(公告)日：1999-03-10

申请号：EP98122628.5

申请日：1989-07-12

申请人： SONY CORPORATION

发明人： Kaneko,Masahiko, Sony Corporation ,  Aratani,Katsuhisa, Sony Corporation ,  Muto, Yoshihiro, Sony Corporation

IPC分类号： G11B11/10

CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10519 ,  G11B11/10521 ,  G11B11/10523 ,  G11B11/10528

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 (12 1 , 12 2 ) laminated to each other by exchange coupling, said first and second component films (12 1 , 12 2 ) having characteristics H C21R > H C22R and T C21 C22 , H C21R and H C22R representing coercive forces of said first and second component films (12 1 , 12 2 ) at room temperature and T C21 and T C22 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 T 1 being virtually in the vicinity of the Curie temperature T C1 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 T 2 being over said Curie temperature T C1 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.

摘要翻译： 本发明涉及使用形成在至少具有垂直磁各向异性的至少第一和第二磁性薄膜（11,12,13）的叠层结构中的热磁记录介质的热磁记录方法，其中所述第二磁性薄膜 12）由通过交换耦合彼此层叠的第一和第二组分膜（121,122）形成，具有HC21R> HC22R和TC21

公开(公告)号：EP0901121A3

公开(公告)日：2000-12-06

申请号：EP98122628.5

申请日：1989-07-12

申请人： SONY CORPORATION

发明人： Kaneko,Masahiko, Sony Corporation ,  Aratani,Katsuhisa, Sony Corporation ,  Muto, Yoshihiro, Sony Corporation

IPC分类号： G11B11/10

CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10519 ,  G11B11/10521 ,  G11B11/10523 ,  G11B11/10528

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 (12 1 , 12 2 ) laminated to each other by exchange coupling, said first and second component films (12 1 , 12 2 ) having characteristics H C21R > H C22R and T C21 C22 , H C21R and H C22R representing coercive forces of said first and second component films (12 1 , 12 2 ) at room temperature and T C21 and T C22 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 T 1 being virtually in the vicinity of the Curie temperature T C1 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 T 2 being over said Curie temperature T C1 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.