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1. 发明专利

JP2014049147A Magnetic storage device and method for manufacturing the same 审中-公开
标题翻译：磁性存储装置及其制造方法
公开(公告)号：JP2014049147A
公开(公告)日：2014-03-17
申请号：JP2012189355
申请日：2012-08-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , WATANABE KATSURO , IGARASHI KAZUSUKATSU
IPC分类号： G11B5/02 , G11B5/09 , G11B5/31
摘要： PROBLEM TO BE SOLVED: To provide a control method and device for making a large capacity magnetic storage device having a microwave-assisted magnetic recording head mounted and having a high remote track interference tolerance have a high yield with a magnetic head, and a magnetic storage device.SOLUTION: A recording magnetic field is generated from a recording magnetic pole by a bias recording current in which remote track interference does not substantially occur when a microwave assist part is put in a non-operation state, and information is recorded in a perpendicular magnetic recording medium by using both the recording magnetic field and a microwave assist effect.
摘要翻译：要解决的问题：提供一种用于制造具有安装有微波辅助磁记录头并具有高远程轨道干扰公差的大容量磁存储装置的控制方法和装置，具有高磁头的高产量，以及磁存储装置。解决方案：通过偏移记录电流从记录磁极产生记录磁场，当微波辅助部件处于非操作状态时，基本上不发生远程磁道干扰，并且信息被记录在垂直方向磁记录介质，通过使用记录磁场和微波辅助效果。

2. 发明专利

JP2014002812A Microwave assist magnetic recording system and magnetic storage device 有权
标题翻译：微波辅助磁记录系统和磁存储器件
公开(公告)号：JP2014002812A
公开(公告)日：2014-01-09
申请号：JP2012137210
申请日：2012-06-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO
IPC分类号： G11B5/02 , G11B5/09 , G11B5/82 , G11B21/10
CPC分类号： G11B5/02 , G11B5/607 , G11B2005/001 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To provide a large-capacity magnetic storage device, which has a high track density more than 500 kTPI expected from average characteristics, having a high manufacturing yield while maintaining reliability, with respect to a vertical magnetic recording medium with characteristic distribution in a circumferential direction.SOLUTION: A microwave assist magnetic recording head including a recording magnetic pole and a high-frequency magnetic field oscillation element selects a set of at least two recording conditions from a parameter table stored in a magnetic storage device in each sector, and records information under the conditions in each sector.
摘要翻译：要解决的问题：提供一种大容量磁存储装置，其具有从平均特性预期的高于500kTPI的高轨道密度，在保持可靠性方面具有高制造产量，相对于具有特征分布的垂直磁记录介质包括记录磁极和高频磁场振荡元件的微波辅助磁记录头从存储在每个扇区中的磁存储装置中的参数表中选择一组至少两个记录条件，并在每个部门的条件下记录信息。

3. 发明专利

JP2013242934A Magnetic head and magnetic storage 审中-公开
标题翻译：磁头和磁性储存
公开(公告)号：JP2013242934A
公开(公告)日：2013-12-05
申请号：JP2012113888
申请日：2012-05-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUKUDA HIROSHI , SHIROISHI YOSHIHIRO
IPC分类号： G11B5/31 , G11B5/02
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head of microwave assisted magnetic recording system, which can apply AC magnetic field with high intensity to a recording layer of a magnetic recording medium.SOLUTION: In a magnetic head for a magnetic storage of microwave assisted magnetic recording system using a high-frequency magnetic field generation element, the high-frequency magnetic field generation element includes a high-frequency magnetic field generation layer FGL that faces the magnetic recording medium at the time of recording. When the width of bottom face of the high-frequency magnetic field generation layer FGL viewed from track direction (x direction) of the magnetic recording medium is defined as w, and the height thereof is defined as h, the relationship of h≥2w is satisfied.
摘要翻译：要解决的问题：提供一种微波辅助磁记录系统的磁头，其可以将高强度的交流磁场施加到磁记录介质的记录层。解决方案：在用于微波辅助磁存储的磁头中记录系统使用高频磁场产生元件，高频磁场产生元件包括在记录时面向磁记录介质的高频磁场产生层FGL。当从磁记录介质的磁道方向（x方向）观察的高频磁场产生层FGL的底面的宽度被定义为w，其高度被定义为h时，h≥2w的关系为满意。

4. 发明专利

JP2013229067A Magnetic head and magnetic memory device 审中-公开
标题翻译：磁头和磁记忆装置
公开(公告)号：JP2013229067A
公开(公告)日：2013-11-07
申请号：JP2012098309
申请日：2012-04-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUKUDA HIROSHI , SHIROISHI YOSHIHIRO
IPC分类号： G11B5/02 , G11B5/31
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head that has high reliability and is capable of improving in microwave intensity, and a magnetic memory device that has high reliability and is capable of implementing high recording density, in the case of using a microwave assisted magnetic recording scheme.SOLUTION: In a magnetic memory device including: a magnetic recording medium 130; and a magnetic head that includes a recording magnetic pole 122, an opposed magnetic pole 124, a coil 123, and a high frequency magnetic field generating element 140, the high frequency magnetic field generating element 140 assists writing to the magnetic recording medium 130 by a high frequency magnetic field 145 caused by a change in recording current flowing through the coil 123.
摘要翻译：要解决的问题：为了提供具有高可靠性并且能够提高微波强度的磁头，以及在使用微波辅助磁体的情况下具有高可靠性并且能够实现高记录密度的磁存储器件记录方案。解决方案：一种磁存储装置，包括：磁记录介质130; 以及包括记录磁极122，相对磁极124，线圈123和高频磁场产生元件140的磁头，高频磁场产生元件140协助通过磁记录介质130写入磁记录介质130 由流过线圈123的记录电流的变化引起的高频磁场145。

5. 发明专利

JP2014081981A Perpendicular magnetic recording medium and magnetic storage device 有权
标题翻译：全能磁记录介质和磁存储器件
公开(公告)号：JP2014081981A
公开(公告)日：2014-05-08
申请号：JP2012230239
申请日：2012-10-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , HIRAYAMA YOSHIYUKI , FUKUDA HIROSHI , SATO AKIRA
IPC分类号： G11B5/66 , C23C14/34 , G11B5/02 , G11B5/31 , G11B5/64 , G11B5/65 , G11B5/738 , G11B5/851
CPC分类号： G11B5/65 , G11B5/66 , G11B5/7325 , G11B5/851
摘要： PROBLEM TO BE SOLVED: To provide a micro-assisted magnetic head having a distribution in oscillation frequency, a magnetic recording medium suitable to a recording system, and the manufacturing method thereof.SOLUTION: A laminated unit layer is composed of a first sub layer including three or more layers of a sub layer in which film thickness is larger than zero and less than 1 nm, and including 50% or more of at least one kind of an element of a group consisting of Co, Fe, Ni as a main element, and a second sub layer having an element different from the main element of the first sub layer as a main element, and a plurality of magnetic layers constitutes a recording layer, the plurality of magnetic layers having a magnetic layer which has, as a top layer, a plurality of laminated unit layers with compositions of sub layers or film thickness are different.
摘要翻译：要解决的问题：提供一种具有振荡频率分布的微辅助磁头，适用于记录系统的磁记录介质及其制造方法。解决方案：层叠单元层由包括第一子层三层以上的层厚度大于零且小于1nm的亚层，并且包括50％以上的由Co，Fe，Ni作为主要元素的至少一种元素以及具有与第一子层的主要元件不同的元件作为主要元件的第二子层，并且多个磁性层构成记录层，所述多个磁性层具有磁性层，该磁性层具有作为顶部的磁性层层，具有亚层或膜厚度的组合的多个层压单元层是不同的。

6. 发明专利

JP2013149340A Magnetic memory device, head drive control device, and head drive control method 审中-公开
标题翻译：磁记录装置，头驱动控制装置和头驱动控制方法
公开(公告)号：JP2013149340A
公开(公告)日：2013-08-01
申请号：JP2013040531
申请日：2013-03-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , FUKUDA HIROSHI , TAGAWA IKUYA , OKADA TOSHIHIRO
IPC分类号： G11B5/02 , G11B5/012 , G11B5/31 , H01L29/82 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To solve such a problem that, in a magnetic memory device by a conventional micro assist recording method, when a high-frequency magnetic field oscillation element is kept in an operating state in reproducing or seeking information, the information is often lost or rewritten according to external environment.SOLUTION: The magnetic memory device includes: a magnetic recording medium; a microwave assist magnetic recording head having at least recording magnetic poles for generating a recording magnetic field for writing in the magnetic recording medium, and a high-frequency magnetic field oscillation element for generating a high-frequency magnetic field; a magnetic reproduction head for reading information from the magnetic recording medium; signal processing means for processing a signal that the magnetic recording head writes and a signal that the magnetic reproduction head reads; and means for controlling clearance between a high-frequency magnetic field oscillator and the magnetic recording medium. The magnetic high-frequency magnetic field oscillation element is prevented from operating during a time other than a time of recording.
摘要翻译：要解决的问题为了解决这样一个问题，即在通过常规微辅助记录方法的磁存储装置中，当高频磁场振荡元件在再现或寻求信息时保持在操作状态时，信息通常是根据外部环境丢失或重写。磁盘存储器件包括：磁记录介质; 具有至少记录磁极的微波辅助磁记录头，用于产生用于在磁记录介质中写入的记录磁场;以及高频磁场振荡元件，用于产生高频磁场; 用于从磁记录介质读取信息的磁再现头; 信号处理装置，用于处理磁记录头写入的信号和磁再现头读取的信号; 以及用于控制高频磁场振荡器和磁记录介质之间的间隙的装置。磁性高频磁场振荡元件在记录之外的时间期间被防止操作。

7. 发明专利

JP2013229084A Magnetic recording medium and magnetic memory device 有权
标题翻译：磁记录介质和磁记忆装置
公开(公告)号：JP2013229084A
公开(公告)日：2013-11-07
申请号：JP2012102100
申请日：2012-04-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUKUDA HIROSHI , SHIROISHI YOSHIHIRO
IPC分类号： G11B5/66 , G11B5/02 , G11B5/31
CPC分类号： G11B5/78 , G11B5/66 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium and a magnetic memory device capable of implementing high recording density, in the case of using a microwave assisted magnetic recording (MAMR) scheme.SOLUTION: In a magnetic memory device including a magnetic recording medium 130 having a recording film 133 with three or more layers, a recording magnetic pole 122 generating a recording magnetic field, an opposed magnetic pole 124, a high frequency magnetic field generating element 140 generating a microwave for recording assist, and a magnetic reproduction element 112, an anisotropic field of a first layer which is a top layer of the recording film 133 is larger than 20 kOe.
摘要翻译：要解决的问题：在使用微波辅助磁记录（MAMR）方案的情况下，提供能够实现高记录密度的磁记录介质和磁存储器件。解决方案：在包括磁记录介质的磁存储器件 130，其具有三层或更多层的记录膜133，产生记录磁场的记录磁极122，相对的磁极124，产生用于记录辅助的微波的高频磁场产生元件140和磁性再现元件112 作为记录膜133的顶层的第一层的各向异性磁场大于20kOe。

8. 发明专利

JP2014049145A Magnetic head, and magnetic storage device 有权
标题翻译：磁头和磁储存装置
公开(公告)号：JP2014049145A
公开(公告)日：2014-03-17
申请号：JP2012189082
申请日：2012-08-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , WATANABE KATSURO , SATO AKIRA
IPC分类号： G11B5/31 , G11B5/02 , G11B5/39 , H01F10/16 , H01F10/26 , H01L29/82 , H01L43/08 , H01L43/10
CPC分类号： G11B5/3909 , G11B5/235 , G11B5/3106 , G11B5/3146 , G11B5/3945 , G11B5/3967 , G11B2005/0024 , Y10T428/1114 , Y10T428/1121 , Y10T428/1171
摘要： PROBLEM TO BE SOLVED: To provide an STO (Spin Torque Oscillator) which has a high corrosion resistance, reliability during power supply thereto, a high frequency oscillation efficiency and a strong high frequency magnetic field, an STO sensor element, a microwave-assisted magnetic recording head, and a highly reliable magnetic storage device which has the magnetic head mounted thereon and has a large capacity and high reliability.SOLUTION: An STO includes a foundation layer, a first magnetic layer provided on the foundation layer, a nonmagnetic intermediate layer provided on the first magnetic layer, and a second magnetic layer provided on the nonmagnetic intermediate layer. The nonmagnetic intermediate layer is composed of a nonmagnetic alloy containing 50 atm% or more of at least one element selected from a first group consisting of Cu, Ag and Au, and further containing, in total, 0.1 atm% or more of at least one element which is selected from a second group consisting of Cu, Ag, Au, Cr, Ti, Zr, Hf, V, Nb, Ta, Ru, Os, Pd, Pt, Ph and Ir and is not the elements selected from the first group.
摘要翻译：要解决的问题：提供一种STO（旋转扭矩振荡器），其具有高耐腐蚀性，在其供电期间的可靠性，高频振荡效率和强大的高频磁场，STO传感器元件，微波辅助磁记录头，以及具有安装在其上的磁头的高度可靠的磁存储装置，具有大容量和高可靠性。解决方案：STO包括基础层，设置在基础层上的第一磁性层，提供的非磁性中间层在第一磁性层上，以及设置在非磁性中间层上的第二磁性层。非磁性中间层由含有50atm％以上的至少一种元素的非磁性合金构成，所述元素选自由Cu，Ag和Au组成的第一组，并且还含有至少一个0.1atm％以上的至少一种元素，其选自由Cu，Ag，Au，Cr，Ti，Zr，Hf，V，Nb，Ta，Ru，Os，Pd，Pt，Ph和Ir组成的第二组，并且不是选自第一组。

9. 发明专利

JP2013251044A Magnetic storage device, head drive control device and head drive control method 有权
标题翻译：磁性存储装置，头驱动控制装置和头驱动控制方法
公开(公告)号：JP2013251044A
公开(公告)日：2013-12-12
申请号：JP2013155098
申请日：2013-07-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , FUKUDA HIROSHI , TAGAWA IKUYA , OKADA TOSHIHIRO
IPC分类号： G11B5/02 , G11B5/31
摘要： PROBLEM TO BE SOLVED: To provide a highly reliable and large capacity magnetic storage device allowing for high manufacturing yield and high recording density.SOLUTION: A magnetic storage device comprises: a magnetic recording medium; a microwave assisted magnetic recording head including a recording magnetic pole generating a recording magnetic field for performing writing to the magnetic recording medium, a high frequency magnetic field oscillation element generating a high frequency magnetic field, and means for energizing the high frequency magnetic field oscillation element; a magnetic reproducing head that reads information from the magnetic recording medium; and means for controlling and processing recording operation of the magnetic recording head and reproducing operation of the magnetic reproducing head. During a non-recording period before energization of the recording magnetic pole, the high frequency magnetic field oscillation element is energized by the means for energizing the high frequency magnetic field oscillation element, and then the recording magnetic pole is energized, thereby performing recording operation.
摘要翻译：要解决的问题：提供高可靠性和大容量的磁存储装置，其允许高的制造成品率和高的记录密度。解决方案：磁存储装置包括：磁记录介质; 一种微波辅助磁记录头，包括产生用于对磁记录介质进行写入的记录磁场的记录磁极，产生高频磁场的高频磁场振荡元件，以及用于激励高频磁场振荡元件 ; 从磁记录介质读取信息的磁再现头; 以及用于控制和处理磁记录头的记录操作和磁再现头的再现操作的装置。在记录磁极通电之前的非记录时段期间，高频磁场振荡元件由用于激励高频磁场振荡元件的装置激励，然后记录磁极通电，从而进行记录操作。

10. 发明专利

JP2013073661A Magnetic storage apparatus, head drive controller, and head drive control method 有权
标题翻译：磁力储存装置，头驱动控制器和头驱动控制方法
公开(公告)号：JP2013073661A
公开(公告)日：2013-04-22
申请号：JP2011213976
申请日：2011-09-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIROISHI YOSHIHIRO , FUKUDA HIROSHI , TAGAWA IKUYA , OKADA TOSHIHIRO
IPC分类号： G11B5/02 , G11B5/31
CPC分类号： G11B5/3146 , G11B5/607 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To resolve problems in a conventional magnetic storage apparatus based on a microwave assisted magnetic recording method where information may disappear or be rewritten depending upon external environment if a high-frequency magnetic field oscillator element is operated at a time of reproducing information and seeking .SOLUTION: A magnetic storage apparatus includes: a magnetic recording medium; a microwave assisted magnetic recording head at least equipped with a magnetic recording pole that generates a recording magnetic field for writing to the magnetic recording medium and with a high-frequency magnetic field oscillator element that generates a high-frequency magnetic field; a magnetic reproducing head that reads information from the magnetic recording medium; a signal processing means that processes a signal written by the magnetic recording head and a signal read by the magnetic reproducing head; and a means that controls clearance between the high-frequency magnetic field oscillator and the magnetic recording medium. In the magnetic storage apparatus, the high-frequency magnetic field oscillator element is not operated except at a time of recording.
摘要翻译：解决的问题：为了解决现有的基于微波辅助磁记录方法的常规磁存储装置中的问题，如果高频磁场振荡器元件一次运行，则根据外部环境信息可能消失或被重写重现信息和寻求。解决方案：磁存储装置包括：磁记录介质; 至少配备有磁记录极的微波辅助磁记录头，其产生用于向磁记录介质写入的记录磁场和产生高频磁场的高频磁场振荡器元件; 从磁记录介质读取信息的磁再现头; 处理由磁记录头写入的信号和由磁再现头读出的信号的信号处理装置; 以及控制高频磁场振荡器和磁记录介质之间的间隙的装置。在磁存储装置中，除了在记录时，高频磁场振荡器元件不工作。版权所有（C）2013，JPO＆INPIT

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