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公开(公告)号：US20080292909A1
公开(公告)日：2008-11-27
申请号：US12114431
申请日：2008-05-02
申请人： Satoshi Igarashi , Akira Kikuchi , Isatake Kaitsu , Ryosaku Inamura , Kenji Sato , Shinya Sato , Hideaki Takahoshi , Atsushi Endo , Hisato Shibata
发明人： Satoshi Igarashi , Akira Kikuchi , Isatake Kaitsu , Ryosaku Inamura , Kenji Sato , Shinya Sato , Hideaki Takahoshi , Atsushi Endo , Hisato Shibata
IPC分类号： G11B5/706
CPC分类号： G11B5/65 , G11B5/66 , G11B5/667 , G11B5/7325
摘要： This magnetic recording medium has a substrate, a nonmagnetic granular layer formed above the substrate and a recording layer formed on the nonmagnetic granular layer. The nonmagnetic granular layer is made of CoCr alloy with an hcp or an fcc crystal structure in which a nonmagnetic material segregates virtually-columnar magnetic grains. The magnetic recording medium and the magnetic storage apparatus in which the medium is used have improved reading/writing performances.
摘要翻译： 该磁记录介质具有基板，形成在基板上方的非磁性粒状层和形成在非磁性粒状层上的记录层。 非磁性粒状层由具有hcp或fcc晶体结构的CoCr合金制成，其中非磁性材料分离出实际上柱状的磁性颗粒。 使用介质的磁记录介质和磁存储装置具有改进的读/写性能。
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公开(公告)号：US20090142624A1
公开(公告)日：2009-06-04
申请号：US12325145
申请日：2008-11-29
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/66 , G11B5/851
摘要： A method of producing a magnetic recording medium produces a medium having a magnetic recording layer disposed above a nonmagnetic intermediate layer, The nonmagnetic intermediate layer is formed by a sputtering using a target made of an oxide material. Oxygen gas or carbon dioxide gas is supplied during the sputtering in order to suppress a state where an oxygen supply becomes insufficient due to separation of oxygen atoms from the oxide material at a time of plasma generation.
摘要翻译： 制造磁记录介质的方法产生具有设置在非磁性中间层上方的磁记录层的介质。非磁性中间层通过使用由氧化物材料制成的靶进行溅射形成。 在溅射期间供给氧气或二氧化碳气体，以便抑制在等离子体产生时由于氧原子与氧化物材料的分离导致供氧不足的状态。
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3.发明申请MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING THE SAME, AND MAGNETIC STORAGE DEVICE 审中-公开磁记录介质，其制造方法和磁存储装置公开(公告)号：US20090110961A1
公开(公告)日：2009-04-30
申请号：US12260431
申请日：2008-10-29
IPC分类号： G11B5/62
摘要： A magnetic recording medium used for a hard disc drive and the like, a method of manufacturing the same, and a magnetic storage device. The magnetic recording medium that includes a substrate, a first ferromagnetic layer formed on the substrate, a non-magnetic layer formed on the first ferromagnetic layer and including a ferromagnetic element and a second ferromagnetic layer formed on the non-magnetic layer, wherein the first ferromagnetic layer and the second ferromagnetic layer are magnetically coupled through the non-magnetic layer.
摘要翻译： 用于硬盘驱动器等的磁记录介质，其制造方法和磁存储装置。 磁记录介质包括基板，形成在基板上的第一铁磁层，形成在第一铁磁层上的非磁性层，并且包括铁磁元件和形成在非磁性层上的第二铁磁层，其中第一 铁磁层和第二铁磁层通过非磁性层磁耦合。
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4.发明申请MAGNETIC RECORDING MEDIUM, MANUFACTURING METHOD THEREOF AND MAGNETIC STORAGE APPARATUS 审中-公开磁记录介质及其制造方法及磁存储装置公开(公告)号：US20090109579A1
公开(公告)日：2009-04-30
申请号：US12198648
申请日：2008-08-26
IPC分类号： G11B5/33
摘要： A magnetic recording medium has a substrate, a first granular layer formed on the substrate, the first granular layer having a plurality of a first magnetic grains and a first oxide for separating the plurality of first magnetic grains from one another. A non-magnetic layer is formed on the first granular layer. The second granular layer is formed on the non-magnetic layer which has a plurality of second magnetic grains and a second oxide for separating the plurality of second magnetic grains from one another. The anisotropic magnetic field of the first granular layer is more intensive than that of the second granular layer.
摘要翻译： 磁记录介质具有基板，形成在基板上的第一粒状层，具有多个第一磁性粒子的第一粒状层和用于将多个第一磁性颗粒彼此分离的第一氧化物。 在第一颗粒层上形成非磁性层。 第二颗粒层形成在具有多个第二磁性颗粒的非磁性层和用于将多个第二磁性颗粒彼此分离的第二氧化物。 第一粒状层的各向异性磁场比第二粒状层的各向异性磁场强。
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公开(公告)号：US20100007988A1
公开(公告)日：2010-01-14
申请号：US12497819
申请日：2009-07-06
申请人： Satoshi Igarashi , Tohru Horie , Ryo Kurita , Isatake Kaitsu , Akira Kikuchi , Shinya Sato
发明人： Satoshi Igarashi , Tohru Horie , Ryo Kurita , Isatake Kaitsu , Akira Kikuchi , Shinya Sato
摘要： A magnetic recording medium includes a nonmagnetic granular layer that has a granular structure in which a plurality of nonmagnetic grains made of a nonmagnetic material are separated from one another by a Cr oxide. The magnetic recording medium further includes a magnetic granular layer that is formed on the nonmagnetic granular layer and has a granular structure in which a plurality of magnetic grains made of a magnetic material are separated from one another by a nonmagnetic material.
摘要翻译： 磁记录介质包括具有颗粒结构的非磁性颗粒层，其中由非磁性材料制成的多个非磁性颗粒通过Cr氧化物彼此分离。 磁记录介质还包括磁性颗粒层，其形成在非磁性颗粒层上，并且具有颗粒结构，其中由磁性材料制成的多个磁性颗粒通过非磁性材料彼此分离。
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公开(公告)号：US08057927B2
公开(公告)日：2011-11-15
申请号：US12497819
申请日：2009-07-06
申请人： Satoshi Igarashi , Tohru Horie , Ryo Kurita , Isatake Kaitsu , Akira Kikuchi , Shinya Sato
发明人： Satoshi Igarashi , Tohru Horie , Ryo Kurita , Isatake Kaitsu , Akira Kikuchi , Shinya Sato
IPC分类号： G11B5/66
摘要： A magnetic recording medium includes a nonmagnetic granular layer that has a granular structure in which a plurality of nonmagnetic grains made of a nonmagnetic material are separated from one another by a Cr oxide. The magnetic recording medium further includes a magnetic granular layer that is formed on the nonmagnetic granular layer and has a granular structure in which a plurality of magnetic grains made of a magnetic material are separated from one another by a nonmagnetic material.
摘要翻译： 磁记录介质包括具有颗粒结构的非磁性颗粒层，其中由非磁性材料制成的多个非磁性颗粒通过Cr氧化物彼此分离。 磁记录介质还包括磁性颗粒层，其形成在非磁性颗粒层上，并且具有颗粒结构，其中由磁性材料制成的多个磁性颗粒通过非磁性材料彼此分离。
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7.发明申请MAGNETIC RECORDING MEDIUM, METHOD FOR MANUFACTURING THE SAME, AND MAGNETIC RECORDING APPARATUS 审中-公开磁记录介质，其制造方法和磁记录装置公开(公告)号：US20080285177A1
公开(公告)日：2008-11-20
申请号：US12105965
申请日：2008-04-18
申请人： Ryosaku Inamura , Isatake Kaitsu , Takuya Uzumaki , Iwao OKamoto , Akira Kikuchi
发明人： Ryosaku Inamura , Isatake Kaitsu , Takuya Uzumaki , Iwao OKamoto , Akira Kikuchi
IPC分类号： G11B5/33
摘要： According to an aspect of an embodiment, a magnetic recording medium includes a substrate, and a first granular layer formed over the substrate, the first granular layer having a plurality of first magnetic particles and Si oxide separating the plurality of first magnetic particles. The magnetic recording medium further includes a second granular layer formed over the first granular layer, the second granular layer having a plurality of second magnetic particles and Ti oxide separating the plurality of second magnetic particles.
摘要翻译： 根据实施例的一个方面，磁记录介质包括基板和形成在基板上的第一颗粒层，第一颗粒层具有多个第一磁性颗粒和分离多个第一磁性颗粒的氧化硅。 磁记录介质还包括形成在第一颗粒层上的第二颗粒层，第二颗粒层具有多个第二磁性颗粒和分离多个第二磁性颗粒的Ti氧化物。
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公开(公告)号：US20070275269A1
公开(公告)日：2007-11-29
申请号：US11583283
申请日：2006-10-19
申请人： Hideaki Takahoshi , Atsushi Endo , Reiko Murao , Shinya Sato , Akira Kikuchi
发明人： Hideaki Takahoshi , Atsushi Endo , Reiko Murao , Shinya Sato , Akira Kikuchi
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/66 , G11B5/7379
摘要： A magnetic recording medium is disclosed that includes a substrate; and an underlayer, a first magnetic layer, a non-magnetic coupling layer, a second magnetic layer, a third magnetic layer, a non-magnetic separation layer, and a fourth magnetic layer stacked in this order on the substrate. The first magnetic layer and the second magnetic layer are antiferromagnetically exchange-coupled, and the second magnetic layer and the third magnetic layer are ferromagnetically exchange-coupled. The third magnetic layer has an anisotropic magnetic field smaller than the anisotropic magnetic field of the second magnetic layer, and has a saturation magnetization greater than the saturation magnetization of the second magnetic layer.
摘要翻译： 公开了一种包括基板的磁记录介质; 以及在基板上依次层叠的底层，第一磁性层，非磁性耦合层，第二磁性层，第三磁性层，非磁性分离层和第四磁性层。 第一磁性层和第二磁性层是反铁磁交换耦合的，第二磁性层和第三磁性层是铁磁交换耦合的。 第三磁性层具有比第二磁性层的各向异性磁场小的各向异性磁场，并且具有大于第二磁性层的饱和磁化强度的饱和磁化强度。
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公开(公告)号：US20090242389A1
公开(公告)日：2009-10-01
申请号：US12409062
申请日：2009-03-23
CPC分类号： C23C14/352 , B82Y25/00 , C23C14/08 , G11B5/65 , G11B5/851 , H01F10/007 , H01F41/18
摘要： A method for manufacturing a magnetic recording medium including a nonmagnetic substrate, an intermediate layer over the nonmagnetic substrate, and a granular magnetic layer for recording information, disposed on the intermediate layer. The method includes sputtering a Co alloy, a Ti oxide, a Si oxide and a Co oxide simultaneously to form the granular magnetic layer containing Co alloy magnetic particles and an oxide magnetically separating the magnetic particles.
摘要翻译： 一种制造包括非磁性基片，非磁性基片上的中间层和用于记录信息的粒状磁性层的磁记录介质的方法，该方法设置在中间层上。 该方法包括同时溅射Co合金，Ti氧化物，Si氧化物和Co氧化物，以形成含有Co合金磁性颗粒的粒状磁性层和磁性分离磁性颗粒的氧化物。
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公开(公告)号：US20120019959A1
公开(公告)日：2012-01-26
申请号：US13257227
申请日：2010-03-02
申请人： Ryo Kurita , Satoshi Igarashi , Isatake Kaitsu , Akira Kikuchi
发明人： Ryo Kurita , Satoshi Igarashi , Isatake Kaitsu , Akira Kikuchi
摘要： A magnetic recording medium includes a non-magnetic granular layer, and a recording layer provided on the non-magnetic granular layer, wherein the recording layer includes a first granular magnetic layer provided on the non-magnetic granular layer, and a second granular magnetic layer provided on the first granular magnetic layer, and a non-magnetic material magnetically separating metal grains of the non-magnetic granular layer is different from a non-magnetic material magnetically separating magnetic grains of the first granular magnetic layer.
摘要翻译： 磁记录介质包括非磁性颗粒层和设置在非磁性颗粒层上的记录层，其中记录层包括设置在非磁性颗粒层上的第一粒状磁性层和第二粒状磁性层 设置在第一粒状磁性层上，并且非磁性粒状层的金属粒子的非磁性材料与磁性分离第一粒状磁性层的磁性粒子的非磁性材料不同。
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