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1.发明授权Magneto-optical recording medium having two magnetic layers with the same curie temperature 失效具有两个具有相同居里温度的磁性层的磁光记录介质
公开(公告)号：US5487046A
公开(公告)日：1996-01-23
申请号：US282212
申请日：1994-07-28
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10582 , G11B11/10506 , G11B11/10515 , G11B11/10521
摘要： A magneto-optical recording method for recording information in an overwrite mode in a magneto-optical recording medium by the application of a laser beam is disclosed. The magneto-optical recording medium includes a substrate, and at least two magnetic recording layers overlaid thereon, with an exchange force working at least between the two magnetic recording layers, and the Curie temperature of each of the two magnetic recording layers being substantially the same. The magneto-optical recording method includes the step of conducting overwriting information by changing the power of the laser beam to be applied to at least two different levels, one at which the magnetic recording layers are heated to a temperature near or higher than the Curie temperature, and the other at which the magnetic recording layers are heated to a temperature lower than the Curie temperature, while a magnetic field is applied to the magneto-optical recording medium in one direction, in accordance with signals to be recorded in the magneto-optical recording medium, and this recording method requires only one initialization by the application of the magnetic field, but does not require any further initialization thereafter.
摘要翻译： 公开了一种用于通过施加激光束在磁光记录介质中以重写模式记录信息的磁光记录方法。 磁光记录介质包括至少两个覆盖在其上的磁记录层，至少两个磁记录层之间具有至少两个磁记录层之间的交换力，并且两个磁记录层中的每一个的居里温度基本相同 。 磁光记录方法包括通过将要施加的激光束的功率改变为至少两个不同级别来进行重写信息的步骤，一个磁记录层被加热到接近或高于居里温度的温度 ，另一个磁记录层被加热到低于居里温度的温度，同时根据要记录在磁光学中的信号在一个方向上对磁光记录介质施加磁场 记录介质，并且该记录方法仅需要通过施加磁场进行一次初始化，而不需要其后进一步的初始化。
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2.发明授权
公开(公告)号：US5323366A
公开(公告)日：1994-06-21
申请号：US24845
申请日：1993-02-26
IPC分类号： G11B11/10 , G11B11/105 , G11B7/00
CPC分类号： G11B11/10506 , G11B11/10521 , G11B11/10595
摘要： A magneto-optical recording method is disclosed, by which a magnetic recording pattern is formed in an overwriting mode, utilizing demagnetizing field, by directing a light beam onto a perpendicularly magnetized film layer of a magneto-optical recording medium, wherein when recording is being carried out by the application of a light beam onto the perpendicularly magnetized film layer, on switching the direction of magnetization for recording from downward to upward or from upward to downward, when required, with respect to the surface of the magnetized film layer, a light beam application mode for a light-beam applied portion in the magnetized film layer to which the light beam has been applied, and a light beam application mode in a portion in the magnetized film layer immediately after the light-beam applied portion to which the light beam is yet to be applied, are changed.
摘要翻译： 公开了一种磁光记录方法，通过该磁光记录方法，通过将光束引导到磁光记录介质的垂直磁化的膜层上，以覆盖模式形成磁记录图案，利用去磁场，其中当记录为 通过将光束施加到垂直磁化膜层上，在需要时相对于磁化膜层的表面将从记录磁化方向向下或从上向下切换为光 在施加有光束的磁化膜层中的光束施加部分的光束施加模式以及紧接在光束施加部分之后的磁化膜层的部分中的光束施加模式，光束施加部分 光束尚未被应用，被改变。
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公开(公告)号：US5736265A
公开(公告)日：1998-04-07
申请号：US263947
申请日：1994-06-22
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10586 , Y10S428/90
摘要： A magneto-optical recording medium includes a recording layer which is composed of A memory layer comprising a ferromagnetic layer with perpendicular anisotropy, and an auxiliary layer comprising antiferromagnetic layer which exhibits an antimagnetic phase at room temperature, and a ferromagnetic phase at temperatures near the Curie temperature of the memory layer which is higher than room temperature, because of the occurrence of magnetic phase transformation, with the memory layer and the auxiliary layer being overlaid. A magneto-optical recording method using this magneto-optical recording medium is described.
摘要翻译： 磁光记录介质包括由包括具有垂直各向异性的铁磁层的A存储层和包括在室温下呈现抗磁相的反铁磁层的辅助层和在居里温度附近的铁磁相构成的记录层 存储层的温度高于室温，由于存在磁记录层和辅助层的重叠而发生磁相变。 描述使用该磁光记录介质的磁光记录方法。
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公开(公告)号：US5430696A
公开(公告)日：1995-07-04
申请号：US235116
申请日：1994-04-28
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/1053 , G11B11/10506 , G11B11/10521
摘要： A magneto-optical recording method capable of overwriting on a magneto-optical recording medium is disclosed. The magneto-optical recording medium includes a recording layer comprising a single magnetic layer with magnetic anisotropy and the magneto-optical recording methods includes the step of applying a laser beam with a light power level P.sub.1 to the recording layer when a binary coded signal "1" is written therein under a fixed external magnetic field; and the steps of applying a laser beam with a light power level Poh to the recording layer and successively applying a laser beam with a light power level Pol to said recording layer when a binary coded signal "0" is written therein under a fixed external magnetic field, wherein Pol, P.sub.1 and Poh are in the relationship of O
摘要翻译： 公开了能够在磁光记录介质上重写的磁光记录方法。 磁光记录介质包括具有磁各向异性的单个磁性层的记录层，并且磁光记录方法包括在二进制编码信号“1”处将具有光功率电平P1的激光束施加到记录层的步骤 “在固定的外部磁场下写入; 以及当将二进制编码信号“0”写入固定的外部磁场时，将具有光功率电平Poh的激光束施加到记录层并连续地将具有光功率电平Pol的激光束施加到所述记录层的步骤 其中Pol，P1和Poh处于O
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5.发明授权
公开(公告)号：US5337293A
公开(公告)日：1994-08-09
申请号：US825015
申请日：1992-01-24
IPC分类号： G11B11/10 , G11B11/105 , G11B11/12
CPC分类号： G11B11/1053 , G11B11/10506 , G11B11/10521
摘要： A magneto-optical recording method capable of overwriting on a magneto-optical recording medium is disclosed. The magneto-optical recording medium includes a recording layer comprising a single magnetic layer with magnetic anisotropy and the magneto-optical recording methods includes the step of applying a laser beam with a light power level P.sub.1 to the recording layer when a binary coded signal "1" is written therein under a fixed external magnetic field; and the steps of applying a laser beam with a light power level Poh to the recording layer and successively applying a laser beam with a light power level Pol to said recording layer when a binary coded signal "0" is written therein under a fixed external magnetic field, wherein Pol, P.sub.1 and Poh are in the relationship of 0
摘要翻译： 公开了能够在磁光记录介质上重写的磁光记录方法。 磁光记录介质包括具有磁各向异性的单个磁性层的记录层，并且磁光记录方法包括在二进制编码信号“1”处将具有光功率电平P1的激光束施加到记录层的步骤 “在固定的外部磁场下写入; 以及当将二进制编码信号“0”写入固定的外部磁场时，将具有光功率电平Poh的激光束施加到记录层并连续地将具有光功率电平Pol的激光束施加到所述记录层的步骤 其中Pol，P1和Poh处于0
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6.发明授权
公开(公告)号：US5420833A
公开(公告)日：1995-05-30
申请号：US154169
申请日：1993-11-17
申请人： Motoharu Tanaka , Atsuyuki Watada , Masaetsu Takahashi , Hiroshi Deguchi , Toshiaki Tokita , Yoshiko Kurosawa
发明人： Motoharu Tanaka , Atsuyuki Watada , Masaetsu Takahashi , Hiroshi Deguchi , Toshiaki Tokita , Yoshiko Kurosawa
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10517 , G11B11/10506 , G11B11/10586
摘要： A magneto-optical recording medium is composed of a first magnetic layer and a second magnetic layer, which are overlaid, each having a perpendicular magnetic anisotropy, and the first magnetic layer having a Curie temperature of Tc.sub.1, a saturation magnetization of Ms.sub.1, a coercive force of Hc.sub.1, and a thickness of t.sub.1, the second magnetic layer having a compensation temperature of Tcomp.sub.2, a Curie temperature Tc.sub.2, and a coercive force of Hc.sub.2, and which satisfies the relationships:Troom Hc.sub.2Hc.sub.1 >.sigma.w/2Ms.sub.1 t.sub.1wherein Troom is room temperature, and .sigma.w is the interface wall energy between the first magnetic wall and the second magnetic wall, and a magneto-optical recording method using this magneto-optical recording medium is provided, in which the application of a magnetic field for initialization of the magneto-optical recording medium is not required.
摘要翻译： 磁光记录介质由重叠的每个具有垂直磁各向异性的第一磁性层和第二磁性层构成，第一磁性层具有Tc1的居里温度，Ms1的饱和磁化强度，矫顽力 Hc1的力，厚度t1，第二磁性层的补偿温度为Tcomp2，居里温度Tc2，矫顽力为Hc2，满足关系：Troom
Hc2 Hc1 > sigma w / 2Ms1t1其中Troom是室温，sigma w是第一磁壁和第二磁壁之间的界面壁能，并且提供了使用该磁光记录介质的磁光记录方法，其中 不需要施加用于磁光记录介质的初始化的磁场。 -
公开(公告)号：US5369629A
公开(公告)日：1994-11-29
申请号：US890631
申请日：1992-05-28
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10582 , G11B11/10506 , G11B11/10515 , G11B11/10521
摘要： A magneto-optical recording method for recording information in an overwrite mode in a magneto-optical recording medium by the application of a laser beam is disclosed. The magneto-optical recording medium includes a substrate, and at least two magnetic recording layers overlaid thereon, with an exchange force working at least between the two magnetic recording layers, and the Curie temperature of each of the two magnetic recording layers being substantially the same. The magneto-optical recording method includes the step of conducting overwriting information by changing the power of the laser beam to be applied to at least two different levels, one at which the magnetic recording layers are heated to a temperature near or higher than the Curie temperature, and the other at which the magnetic recording layers are heated to a temperature lower than the Curie temperature, while a magnetic field is applied to the magneto-optical recording medium in one direction, in accordance with signals to be recorded in the magneto-optical recording medium, and this recording method requires only one initialization by the application of the magnetic field, but does not require any further initialization thereafter.
摘要翻译： 公开了一种用于通过施加激光束在磁光记录介质中以重写模式记录信息的磁光记录方法。 磁光记录介质包括至少两个覆盖在其上的磁记录层，至少两个磁记录层之间具有至少两个磁记录层之间的交换力，并且两个磁记录层中的每一个的居里温度基本相同 。 磁光记录方法包括通过将要施加的激光束的功率改变为至少两个不同级别来进行重写信息的步骤，一个磁记录层被加热到接近或高于居里温度的温度 ，另一个磁记录层被加热到低于居里温度的温度，同时根据要记录在磁光学中的信号在一个方向上对磁光记录介质施加磁场 记录介质，并且该记录方法仅需要通过施加磁场进行一次初始化，而不需要其后进一步的初始化。
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公开(公告)号：US5459701A
公开(公告)日：1995-10-17
申请号：US900172
申请日：1992-06-17
IPC分类号： G11B11/105 , G11B13/04
CPC分类号： G11B11/1053 , G11B11/10517
摘要： A magneto-optical recording method is capable of carrying out overwriting on a magneto-optical recording medium including a single perpendicular magnetic layer serving as a recording layer, by applying laser beams thereto, thereby controlling the formation and erasure of magnetic domains, in which a magnetic domain with a desired length can be formed or erased by the application of a plurality of laser beams during the formation and erasure of the magnetic domains.
摘要翻译： 磁光记录方法能够通过对其进行激光束而在包括用作记录层的单个垂直磁性层的磁光记录介质上进行重写，从而控制磁畴的形成和擦除，其中 可以通过在磁畴的形成和擦除期间施加多个激光束来形成或擦除具有期望长度的磁畴。
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公开(公告)号：US4670323A
公开(公告)日：1987-06-02
申请号：US674224
申请日：1984-11-23
申请人： Hitoshi Nakamura , Hazime Machida , Motoharu Tanaka , Atsuyuki Watada , Fumiya Omi , Nobuyuki Koinuma
发明人： Hitoshi Nakamura , Hazime Machida , Motoharu Tanaka , Atsuyuki Watada , Fumiya Omi , Nobuyuki Koinuma
IPC分类号： G11B5/706 , G11B11/105 , H01F10/20 , G11B7/24
CPC分类号： G11B11/10591 , G11B11/10586 , G11B5/70678 , H01F10/205 , Y10S428/90 , Y10T428/24612 , Y10T428/2495 , Y10T428/24959 , Y10T428/24967 , Y10T428/26 , Y10T428/265 , Y10T428/31678
摘要： The present invention provides a metal oxide magnetic substance represented by the general formula I:MeO.n[Ga.sub.X M.sub.Y.sup.I Fe.sub.2-X-(m/3)Y O.sub.3 ](wherein, Me is at least one member of Ba, Sr and Pb. M.sup.I is at least one member of Zn, Sc, In, Cr, Ir, Ru, Rh, Ti, Ta, Sn and Ge, 5.ltoreq.n.ltoreq.6, O
摘要翻译： 本发明提供由通式I表示的金属氧化物磁性物质：MeO.n [GaXMYIFe2-X-（m / 3）YO3]（其中，Me为Ba，Sr和Pb中的至少一种，MI为 Zn，Sc，In，Cr，Ir，Ru，Rh，Ti，Ta，Sn和Ge中的至少一个成员，5
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10.发明授权Metal oxide magnetic substance and a magnetic film consisting thereof and their uses 失效金属氧化物磁性体及其构成的磁性膜及其用途
公开(公告)号：US4670322A
公开(公告)日：1987-06-02
申请号：US676007
申请日：1984-11-29
申请人： Hitoshi Nakamura , Hazime Machida , Motoharu Tanaka , Atsuyuki Watada , Fumiya Omi , Nobuyuki Koinuma
发明人： Hitoshi Nakamura , Hazime Machida , Motoharu Tanaka , Atsuyuki Watada , Fumiya Omi , Nobuyuki Koinuma
CPC分类号： G11B5/64 , C01G49/009 , C01G55/002 , H01F10/205 , C01P2004/61 , C01P2004/62 , C01P2004/80 , C01P2006/32 , C01P2006/42 , Y10S428/90 , Y10T428/24612 , Y10T428/2495 , Y10T428/24959 , Y10T428/24967 , Y10T428/26 , Y10T428/265 , Y10T428/31678
摘要： The present invention provides a metal oxide magnetic substance represented by the general formula I:MeO.multidot.n[Al.sub.X M.sub.Y Fe.sub.2-x-(m/3)Y O.sub.3 ](wherein, Me is at least one member of Ba, Sr and Pb, M is at least one member of Zn, Sc, In, Cr, Ir, Ru, Rh, Ti, Ta, Sn and Ge, 5.ltoreq.n.ltoreq.6, 0
摘要翻译： 本发明提供由通式I表示的金属氧化物磁性物质：MeOxn [AlXMYFe2-x-（m / 3）YO3]（其中，Me为Ba，Sr和Pb中的至少一种，M为至少一种 Zn，Sc，In，Cr，Ir，Ru，Rh，Ti，Ta，Sn和Ge的成员，5≤n≤6,0
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