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1. 发明专利

JP2014032721A Microwave assisted magnetic recording head and magnetic recording medium with spin torque oscillator 有权
标题翻译：微波辅助磁记录头和带旋转扭矩振荡器的磁记录介质
公开(公告)号：JP2014032721A
公开(公告)日：2014-02-20
申请号：JP2012172200
申请日：2012-08-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATO AKIRA , WATANABE KATSURO , KATO KEIZO , IGARASHI KAZUSUKATSU
IPC分类号： G11B5/31 , G11B5/02 , H01L29/82 , H01L43/08
CPC分类号： G11B5/17 , G11B5/3146 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To provide a spin torque oscillator corresponding to a high-speed data transfer rate and enabling assisted magnetic recording with sufficient size.SOLUTION: A spin torque oscillator includes a lamination spin injection layer and a high-frequency field generating layer. The lamination spin injection layer has a laminated structure including a first magnetic layer, a combining layer, and a second magnetic layer laminated in sequence from the side far from the high-frequency field generating layer. Magnetization of the first magnetic layer and the second magnetic layer are coupled in anti-parallel. In the second magnetic layer, polarity of magnetization is inverted before magnetic-field-polarity inversion of leakage field from a main pole.
摘要翻译：要解决的问题：提供对应于高速数据传输速率的自旋扭矩振荡器，并且能够实现足够尺寸的辅助磁记录。解决方案：自旋扭矩振荡器包括层压自旋注入层和高频场产生层。层叠自旋注入层具有从远离高频场产生层的一侧依次层叠的第一磁性层，组合层和第二磁性层的叠层结构。第一磁性层和第二磁性层的磁化反平行耦合。在第二磁性层中，在从主极泄漏场的磁场极性反转之前，磁化极性反转。

2. 发明专利

JP2013175250A Magnetic head and manufacturing method thereof, and magnetic recording reproducer 有权
标题翻译：磁头及其制造方法及磁记录重放器
公开(公告)号：JP2013175250A
公开(公告)日：2013-09-05
申请号：JP2012037976
申请日：2012-02-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGIURA KENJI , WATANABE KATSURO , IGARASHI KAZUSUKATSU , SATO AKIRA
IPC分类号： G11B5/31 , G11B5/02 , H01L21/8246 , H01L27/105 , H01L29/82 , H01L43/08
CPC分类号： G11B5/1276 , G11B5/1278 , G11B5/3146 , G11B5/3163 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To attain high-density recording by narrowing a width in a track width direction of a high-frequency magnetic field obtained by an oscillator and enhancing an oscillation frequency, in a magnetic head of a high-frequency magnetic field assist recording system.SOLUTION: After an oscillator for generating a high-frequency magnetic field, provided in the vicinity of a main magnetic pole 120 for generating a recording magnetic field, is subjected to patterning by a conventional photolithography or the like, on a side surface in a track width direction, oxidation, nitriding or oxynitriding treatment is performed. Consequently, on the side surface in the track width direction of the oscillator, an oxidation film 140, nitride film or oxynitride film, which is a component of the oscillator, is formed, and the shape of the oscillator becomes circular.
摘要翻译：要解决的问题：为了通过使通过振荡器获得的高频磁场的磁道宽度方向上的宽度变窄并增加振荡频率来获得高密度记录，在高频磁场辅助记录的磁头中系统。解决方案：在用于产生记录磁场的主磁极120附近产生用于产生高频磁场的振荡器之后，通过常规光刻法等在图1中的侧表面上进行图案化进行轨迹宽度方向，氧化，氮化或氮氧化处理。因此，在振荡器的轨道宽度方向的侧表面上形成作为振荡器的一部分的氧化膜140，氮化物膜或氮氧化物膜，并且振荡器的形状变为圆形。

3. 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。

4. 发明专利

JP2013047998A High-frequency magnetic field assist perpendicular magnetic recording head 有权
标题翻译：高频磁场辅助电磁记录头
公开(公告)号：JP2013047998A
公开(公告)日：2013-03-07
申请号：JP2011186307
申请日：2011-08-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUGIYAMA MIKITO , WATANABE KATSURO , HOSOMI KAZUHIKO
IPC分类号： G11B5/31 , G11B5/02
摘要： PROBLEM TO BE SOLVED: To improve the controllability of oscillation properties of a high-frequency oscillatory element in a high-frequency magnetic field assist magnetic recording head.SOLUTION: The width of a high-frequency oscillatory element 110 in a cross track direction is made narrower as it goes away from a medium-opposing surface. When the medium-opposing surface is polished, the electric resistance of the high-frequency oscillatory element is measured, and if it reaches a target electric resistance value, the polishing is finished.
摘要翻译：要解决的问题：提高高频磁场辅助磁记录头中的高频振荡元件的振荡特性的可控性。解决方案：高频振荡元件110在横向方向上的宽度随着离开介质相对表面而变窄。当中间相对表面被抛光时，测量高频振荡元件的电阻，并且如果达到目标电阻值，则抛光结束。版权所有（C）2013，JPO＆INPIT

5. 发明专利

JP2005018903A Magnetic head and magnetic recording and reproducing device 有权
标题翻译：磁头和磁记录和再现装置
公开(公告)号：JP2005018903A
公开(公告)日：2005-01-20
申请号：JP2003181992
申请日：2003-06-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE KATSURO , OTSU TAKAYOSHI , KATAOKA KOJI , YOSHIDA NOBUO , KUSUKAWA KIKUO
IPC分类号： G11B5/10 , G11B5/39
CPC分类号： G11B5/39 , G11B5/10
摘要： PROBLEM TO BE SOLVED: To provide a magneto-resistance effect type head in which noise is reduced and which has an excellent high frequency characteristic with high yield by suppressing noise resulting from a level difference of an upper shield layer or a lower shield layer and by reducing a capacitance in the magneto-resistance effect type head of a CPP structure.
SOLUTION: The magneto-resistance effect type head is configured so that a first lead conductor 31 is electrically connected to the lead connection part 113 of a lower shield layer whose width is equal to or shorter than the maximum length of a track direction of the lower layer 111 in the same plane or the conductor 31 is electrically connected to the connection part 113 of the lower layer whose height is equal to or shorter than the maximum length of the element height direction of the layer 111. Thus, it can be prevented that a level difference is caused in an upper shield layer 12 by the first lead conductor 31 and magnetic domain structure becoming a noise causing source is formed by its level difference and also it is possible to make the lead conductor 31 and the upper shield player 12 so as not to be overlapped with each other.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种降低噪声并且通过抑制由上屏蔽层或下屏蔽层的电平差引起的噪声而具有高产率的优异的高频特性的磁阻效应型头并且通过减小CPP结构的磁阻效应型头中的电容。解决方案：磁阻效应型磁头构造成使得第一引线导体31电连接到宽度等于或短于磁道方向的最大长度的下屏蔽层的引线连接部113 或者导体31与下层的连接部113电连接，该下层的高度等于或短于层111的元件高度方向的最大长度。因此，它可以可以防止由第一引线导体31在上屏蔽层12中产生电平差，并且通过其电平差形成成为噪声源的磁畴结构，并且还可以使引线导体31和上屏蔽播放器12，以便彼此不重叠。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2003067904A Magneto-resistance effect magnetic head and its manufacturing method 审中-公开
标题翻译：磁阻效应磁头及其制造方法
公开(公告)号：JP2003067904A
公开(公告)日：2003-03-07
申请号：JP2001257265
申请日：2001-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MEGURO KENICHI , KIMURA HISASHI , WATANABE KATSURO
IPC分类号： G01R33/09 , G11B5/39 , H01L43/08
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3909 , G11B2005/3996 , Y10T29/49021 , Y10T29/49032 , Y10T29/49034 , Y10T29/49043 , Y10T29/49044 , Y10T29/49128 , Y10T29/49155
摘要： PROBLEM TO BE SOLVED: To provide a magneto-resistance effect magnetic head which realizes supersensitivity and low noise even though narrowing of play back tracks continues. SOLUTION: A magnetic domain control is performed at a ferromagnetism free layer where magnetization rotates in accordance with an external magnetic field by granting of an unidirectional magnetic anisotropy with switched connection of antiferromagnetism, and the effective playback track width is narrowed by disposing a hard magnetic film at an edge part of a magneto-resistive film.
摘要翻译：要解决的问题：为了提供即使缩小回放轨道的变窄，实现超灵敏度和低噪声的磁阻效应磁头。解决方案：磁畴控制是在磁化自由层进行的，其中磁化通过具有反铁磁性的切换连接的单向磁各向异性的赋予而获得的磁场随外部磁场而旋转，通过配置硬磁性膜在磁阻膜的边缘部分。

7. 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。

8. 发明专利

JP2013054809A Magnetic recording head and magnetic recording apparatus 有权
标题翻译：磁记录头和磁记录装置
公开(公告)号：JP2013054809A
公开(公告)日：2013-03-21
申请号：JP2011193495
申请日：2011-09-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIIMOTO MASATO , SUGIURA KENJI , SUGIYAMA MIKITO , NUNOKAWA ISAO , SATO AKIRA , WATANABE KATSURO , HOSOMI KAZUHIKO , YOSHIDA NOBUO
IPC分类号： G11B5/31
CPC分类号： G11B5/314 , G11B2005/0024
摘要： PROBLEM TO BE SOLVED: To improve the strength of a magnetic field applied from a main pole to an oscillator and the strength of a magnetic field applied from the main pole to a recording medium in a magnetic recording head for microwave assisted recording.SOLUTION: In the magnetic recording head according to the present invention, an interval between a main pole and a trailing shield at a place in a position above an air bearing surface is larger than an interval between the main pole and the trailing shield on the air bearing surface.
摘要翻译：要解决的问题：为了提高从主极到振荡器施加的磁场的强度，以及用于微波辅助记录的磁记录头中从主极施加到记录介质的磁场的强度。解决方案：在根据本发明的磁记录头中，在空气轴承表面上方位置处的主极和后挡板之间的间隔大于主极和后盾之间的间隔在空气轴承表面。版权所有（C）2013，JPO＆INPIT

9. 发明专利

JP2011192348A Perpendicular recording magnetic head, manufacturing method thereof, and magnetic disk device 审中-公开
标题翻译：全能记录磁头及其制造方法及磁性装置
公开(公告)号：JP2011192348A
公开(公告)日：2011-09-29
申请号：JP2010057401
申请日：2010-03-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ETO KIMITOSHI , ISHIBASHI MASAYOSHI , WATANABE KATSURO , HASHIMOTO JUNICHI
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3163 , Y10T29/49052
摘要： PROBLEM TO BE SOLVED: To improve recording performance by preventing a decrease in a recording magnetic field when a recording track width is narrowed and improving accuracy of track width while improving surface recording density. SOLUTION: In a perpendicular magnetic recording head, a main magnetic pole 13 comprises a first main magnetic pole unit 131 including an inverted trapezoid having a bevel angle and a second main magnetic pole unit 132 stacked on the first main magnetic pole unit and prescribing a substantially rectangular track width without any bevels. The second main magnetic pole unit is tapered toward a floating surface from a predetermined position of a flare unit. COPYRIGHT: (C)2011,JPO&INPIT

10. 发明专利

JP2004152334A Magnetic sensor, its manufacturing method and magnetic recording and reproducing device employing the sensor 审中-公开
标题翻译：磁传感器，其制造方法和使用传感器的磁记录和再现装置
公开(公告)号：JP2004152334A
公开(公告)日：2004-05-27
申请号：JP2002313622
申请日：2002-10-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHINTANI HIROSHI , WATANABE KATSURO , HATAYA MASAHIKO , KUSUKAWA KIKUO
IPC分类号： G01R33/09 , G11B5/39 , H01L43/08 , H01L43/12
CPC分类号： G11B5/3912 , G01R33/09 , G11B5/3903 , H01L43/08
摘要： PROBLEM TO BE SOLVED: To provide a magnetic sensor in which stability is made superior by suppressing generation of Barkhausen noise and to provide a magnetic recording device employing the sensor.
SOLUTION: Spacers which include at least a nonmagnetic metal layer are inserted between a longitudinal bias applying layer and an upper magnetic shield or between the longitudinal bias applying layer and the upper magnetic shield and a magneto-resistive effect film so that a minimum distance between the longitudinal bias applying layer and the free layer of the magneto-resistive effect film is made longer than a minimum distance between the longitudinal bias applying layer and the shield. Thus, the amount of magnetic flux which enters into the free layer of the magneto-resistive effect film from the longitudinal bias applying layer becomes greater than the amount of magnetic flux absorbed into the upper magnetic shield and the magnetic sensor, in which generation of Barkhausen noise is suppressed, is realized.
COPYRIGHT: (C)2004,JPO
摘要翻译：解决的问题：提供通过抑制巴克豪森噪声的产生而使稳定性更好的磁传感器，并提供使用该传感器的磁记录装置。解决方案：至少包括非磁性金属层的间隔物插入在纵向偏置施加层和上部磁屏蔽之间或纵向偏置施加层和上部磁屏蔽之间以及磁阻效应膜之间，使得最小使纵向偏置施加层与磁阻效应膜的自由层之间的距离长于纵向偏置施加层和屏蔽之间的最小距离。因此，从纵向偏置施加层进入磁阻效应膜的自由层的磁通量变得大于吸收到上磁屏蔽和磁传感器中的磁通量的量，其中一代巴克豪森噪音被抑制，实现了。版权所有（C）2004，JPO

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