公开(公告)号：AT188801T

公开(公告)日：2000-01-15

申请号：AT96107608

申请日：1989-07-12

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B11/10

Abstract: 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

公开(公告)号：AT241198T

公开(公告)日：2003-06-15

申请号：AT98122628

申请日：1989-07-12

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B11/10

Abstract: 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

公开(公告)号：AT148577T

公开(公告)日：1997-02-15

申请号：AT89112754

申请日：1989-07-12

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B11/10

Abstract: 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

公开(公告)号：AU626073B2

公开(公告)日：1992-07-23

申请号：AU3795689

申请日：1989-07-10

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B7/24 ,  G11B13/04

Abstract: 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

公开(公告)号：DE68929136T2

公开(公告)日：2000-06-21

申请号：DE68929136

申请日：1989-07-12

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B11/10

Abstract: 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

公开(公告)号：DE68927725T2

公开(公告)日：1997-08-14

申请号：DE68927725

申请日：1989-07-12

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B11/10

Abstract: 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

公开(公告)号：DE69123225D1

公开(公告)日：1997-01-02

申请号：DE69123225

申请日：1991-12-16

Applicant: SONY CORP

Inventor： SHIMOMA TAKASHI ,  SUZUKI KAYOKO ,  NAKAOKI ARIYOSHI ,  MUTO YOSHIHIRO

IPC: G11B11/10 ,  G11B11/105 ,  G11B11/12 ,  G11B13/04

公开(公告)号：DE68929469T2

公开(公告)日：2004-03-18

申请号：DE68929469

申请日：1989-07-12

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B11/10

Abstract: 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

公开(公告)号：DE68929469D1

公开(公告)日：2003-06-26

申请号：DE68929469

申请日：1989-07-12

Applicant: SONY CORP

Inventor： KANEKO MASAHIKO ,  ARATANI KATSUHISA ,  MUTO YOSHIHIRO

IPC: G11B11/105 ,  G11B11/10

Abstract: 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

公开(公告)号：DE69231603T2

公开(公告)日：2001-05-17

申请号：DE69231603

申请日：1992-07-27

Applicant: SONY CORP

Inventor： SUZUKI KAYOKO ,  NAKAOKI ARIYOSHI ,  MUTO YOSHIHIRO

IPC: G11B5/02 ,  G11B11/10 ,  G11B11/105

Abstract: A magneto-optical recording apparatus records information on a magneto-optical recording medium (20) composed of a memory layer (1) and a recording layer (2) which are disposed on a substrate (11), each comprising a magnetic thin film of amorphous-rare-earth transition-metal alloy. The memory and recording layers (1,2) are magnetically coupled directly, or through an intermediate layer (3) therebetween, to each other under an exchange force. A recording magnetic field generator such as a permanent magnet or an electromagnet applies a recording magnetic field to the magneto-optical recording medium (20), and an initializing magnetic field generator such as a permanent magnet or an electromagnet applies an initializing magnetic force to the magneto-optical recording medium. The initializing magnetic field generator has a magnetic pole confronting a surface of the magneto-optical recording medium. The initializing magnetic force comprises a magnetic field HV directed perpendicularly to the surface of the magneto-optical recording medium, and a magnetic field HH directed along the surface of the magneto-optical recording medium. The magnetic fields HV, HH are defined as follows: HV {(HC2 + HW2) - HV} x 1.7 where HC2 is the coercive force of the recording layer and HW2 is the exchange force.