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1. 发明专利

JP2009259365A Perpendicular magnetic recording head 审中-公开
标题翻译：全能磁记录头
公开(公告)号：JP2009259365A
公开(公告)日：2009-11-05
申请号：JP2008110045
申请日：2008-04-21
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： MARUYAMA YOJI , IWAKURA TADAYUKI , KIMURA WATARU , SHIINA HIROMI , KUDO KAZUE
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To increase both recording magnetic field intensity and gradient, and also reduce the recording magnetic field leakage to the adjacent tracks to achieve high density recording when using a perpendicular magnetic recording head.
SOLUTION: The perpendicular magnetic recording head 1 has a recording head 10 and a reproducing head 30, and the recording head 10 has a main magnetic pole 11 and a magnetic-shield 15 formed on and around the main magnetic pole 11. The magnetic-shield 15 has a layered structure of a plurality of soft magnetic layers each different in saturation magnetic flux density. In this layered structure, a first soft magnetic layer 13 relatively high in saturation magnetic flux density is arranged at the main magnetic pole side, a second soft magnetic layer 14 relatively low in saturation magnetic flux density is arranged on it, and a third soft magnetic layer 12 relatively high in saturation magnetic flux density is arranged further on it.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了增加记录磁场强度和梯度，并且还减少了对相邻轨道的记录磁场泄漏，以便在使用垂直磁记录头时实现高密度记录。解决方案：垂直磁记录头1具有记录头10和再现头30，并且记录头10具有形成在主磁极11上和周围的主磁极11和磁屏蔽15。磁屏蔽15具有饱和磁通密度不同的多个软磁层的分层结构。在该层叠结构中，在主磁极侧配置有相对高的饱和磁通密度的第一软磁性层13，在其上配置相对低饱和磁通密度的第二软磁性层14，第三软磁性层饱和磁通密度相对较高的层12布置在其上。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2006277834A Magnetic head for perpendicular recording and manufacturing method therefore 审中-公开
标题翻译：磁头记录及其制造方法
公开(公告)号：JP2006277834A
公开(公告)日：2006-10-12
申请号：JP2005095356
申请日：2005-03-29
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： OKADA TOSHIHIRO , MOCHIZUKI MASABUMI , KIMURA HISASHI , KIMURA WATARU
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/315
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head for perpendicular recording in which a difference between the geometric track width and effective track width of a main magnetic pole is small.
SOLUTION: The side face of the main magnetic pole is formed into a recessed shape, and the vertex of the recessed shape is positioned at a place close to the trailing side of the main magnetic pole.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于垂直记录的磁头，其中几个磁道宽度和主磁极的有效磁道宽度之间的差小。解决方案：主磁极的侧面形成为凹形，凹形的顶点位于靠近主磁极的后侧的位置。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2006179145A Magneto-resistance effect head and manufacturing method therefor, and recording-reproduction separation type magnetic head 审中-公开
标题翻译：磁阻效应头及其制造方法及记录再现分离型磁头
公开(公告)号：JP2006179145A
公开(公告)日：2006-07-06
申请号：JP2004372901
申请日：2004-12-24
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： AWAKAWA NORIHIRO , KOJIMA SHUICHI , OKAZAKI KOJI , ARASAWA MASATOSHI , KIMURA WATARU
IPC分类号： G11B5/39
CPC分类号： G11B5/3912 , B82Y25/00 , G01R33/093 , G11B5/3932
摘要： PROBLEM TO BE SOLVED: To solve the problem that as a magnetic domain control film is made thinner, a magnetic characteristic is deteriorated, and also magnetization dispersion of the magnetic domain control film is apt to be increased by disturbance and lowering of a magnetic domain control bias magnetic field occurs.
SOLUTION: A 1st magnetic domain control film 10 is arranged in the neighborhood of a free layer 7 of a GMR sensor so that a track width becomes Twr1. A 2nd magnetic domain control film 13 is arranged outside the 1st magnetic domain control film 10. The 2nd magnetic domain control film 13 arranged outside the 1st magnetic domain control film 10 applies an external bias magnetic field to the 1st magnetic domain control film 10. A magnetization amount at the tip of the 1st magnetic domain control film 10 is increased by magnetization by the bias magnetic field from the 2nd magnetic domain control film 13. As a result, a less dispersed strong bias magnetic field is applied to the free layer 7 of the GMR sensor from the 1st magnetic domain control film 10.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题为了解决当磁畴控制膜变薄时，磁特性劣化，磁畴控制膜的磁化分散容易因扰动而降低的问题发生磁畴控制偏置磁场。解决方案：第一磁畴控制膜10布置在GMR传感器的自由层7附近，使得轨道宽度变为Twr1。第1磁畴控制膜13配置在第1磁畴控制膜10的外侧。配置在第1磁畴控制膜10的外侧的第2磁畴控制膜13向第1磁畴控制膜10施加外部偏置磁场。通过来自第2磁畴控制膜13的偏置磁场的磁化，第1磁畴控制膜10的尖端的磁化量增加。结果，较不分散的强偏置磁场被施加到自由层7的来自第一磁畴控制膜10的GMR传感器。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2010146651A Magnetic head slider 有权
标题翻译：磁头滑块
公开(公告)号：JP2010146651A
公开(公告)日：2010-07-01
申请号：JP2008323474
申请日：2008-12-19
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： FUJITA SHIGEO , SOGA MASAHIKO , TANAKA HIDEAKI , UEDA YUJI , OKADA TOSHIHIRO , OTSU TAKAYOSHI , KIMURA WATARU , MARUYAMA YOJI
IPC分类号： G11B5/31
CPC分类号： G11B5/1278 , G11B5/3133 , G11B5/3136 , G11B5/3967 , G11B5/6005 , G11B5/6064 , G11B2005/0005
摘要： PROBLEM TO BE SOLVED: To significantly reduce a thermal protrusion of a thin-film head of a magnetic head slider.
SOLUTION: The thin-film head includes a soft element 14 having a low Young's modulus and a hard element 16 having a high Young's modulus and a low coefficient of linear expansion for reducing thermal protrusion. A preferable soft element is a resist. A preferable hard element with a high Young's modulus and a low coefficient of linear expansion is SiC or W. In particular, SiC is preferable. The soft element and the hard element are provided at the back of a sensor device and a recording magnetic pole. Provision of these two elements in the thin head exerts a combined effect, thereby exhibiting a very large effect of decreasing the thermal protrusion.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：显着减少磁头滑动器的薄膜头的热突起。解决方案：薄膜头包括具有低杨氏模量的软元件14和具有高杨氏模量的硬质元件16和用于减少热突起的低线性膨胀系数。优选的软元件是抗蚀剂。具有高杨氏模量和低线膨胀系数的优选硬质元素是SiC或W。特别地，优选SiC。软元件和硬元件设置在传感器装置和记录磁极的背面。在薄头中设置这两个元件施加组合效果，从而表现出非常大的降低热突起的效果。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2009054219A Perpendicular magnetic recording head 审中-公开
标题翻译：全能磁记录头
公开(公告)号：JP2009054219A
公开(公告)日：2009-03-12
申请号：JP2007218566
申请日：2007-08-24
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： AWAKAWA NORIHIRO , KATO ATSUSHI , MORIJIRI MAKOTO , OKADA TOSHIHIRO , KIMURA WATARU
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/147
摘要： PROBLEM TO BE SOLVED: To solve the problem that when a non-magnetic layer is increased to decrease a squareness ratio S, a saturated magnetic field Hs is increased and current response characteristics of a perpendicular magnetic recording head are decreased, and, when a film thickness of a FeCo ferromagnetic layer is decreased to decrease the squareness ratio S, overwrite characteristics deteriorate, while a multilayer film with the FeCo ferromagnetic layer and non-magnetic layer laminated is used conventionally as a main pole to prevent erasure after recording and a ferromagnetic layer is coupled antiferromagnetically to reduce residual magnetization and reduce the squareness ratio S.
SOLUTION: In the main pole 2 of the perpendicular magnetic recording head 1, an NiFe soft magnetic layer 24 is inserted into the FeCo ferromagnetic layer 22. By inserting the NiFe soft magnetic layer 24 at a position 1 to 7 nm apart from the non-magnetic layer 26, it is possible to reduce the residual magnetization Mr without changing the number of non-magnetic layers 26 and the layer thickness of the FeCo ferromagnetic layer 22, and significantly reduce the squareness ratio S. By this means, it is possible to prevent erasure after recording.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题为了解决增加非磁性层以减小矩形比S的问题，饱和磁场Hs增大，垂直磁记录头的电流响应特性降低，当FeCo铁磁层的膜厚减小以减小矩形比S时，覆盖特性劣化，而具有FeCo铁磁层和非磁性层的层叠多层膜通常用作主极以防止记录之后的擦除铁磁层反铁磁耦合以减少剩余磁化并降低矩形比S.解决方案：在垂直磁记录头1的主极2中，将NiFe软磁层24插入FeCo铁磁层22中。通过将NiFe软磁性层24插入距离非磁性层26 1〜7nm的位置，可以减少残留物而不改变非磁性层26的数量和FeCo铁磁性层22的层厚度，并且显着降低了矩形比S.通过这种方式，可以防止记录之后的擦除。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2009283067A Magnetic head for perpendicular recording and magnetic recording apparatus 审中-公开
标题翻译：磁头记录和磁记录装置磁头
公开(公告)号：JP2009283067A
公开(公告)日：2009-12-03
申请号：JP2008134185
申请日：2008-05-22
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： KIMURA WATARU , IWAKURA TADAYUKI , MARUYAMA YOJI
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278
摘要： PROBLEM TO BE SOLVED: To make a recording magnetic field distribution generated from a recording head more suitable for high-density recording, in order to achieve high resolution and narrow erase width on a narrow track, in a magnetic head for perpendicular recording.
SOLUTION: The magnetic head for perpendicular recording is provided with a recording head 12 having a main pole layer 34, an auxiliary pole layer 32, a first sub-pole layer 33, a second sub-pole layer 31, a pedestal-like soft magnetic layers 35 and a coil 37. Throat height TH_T in the film thickness direction upper part which is a medium running direction trailing side of the main pole layer 34 and a throat height TH_L in the film thickness direction lower part being a medium running direction leading side are controlled, and the throat height TH_T of the trailing side is smaller than the throat height TH_L of the leading side.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了从记录头产生的记录磁场分布更适于高密度记录，为了在窄轨道上实现高分辨率和窄的擦除宽度，在用于垂直记录的磁头中。解决方案：用于垂直记录的磁头设置有记录头12，记录头12具有主极层34，辅助极层32，第一子极层33，第二子极层31，软磁性层35和线圈37.作为主极层34的介质运行方向下降侧的膜厚度方向上部的喉部高度TH_T，膜厚度方向下部的喉部高度TH_L为运转中方向前方被控制，后侧的喉部高度TH_T小于前方的喉部高度TH_L。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2008234777A Magnetic head for perpendicular recording 审中-公开
标题翻译：磁头记录
公开(公告)号：JP2008234777A
公开(公告)日：2008-10-02
申请号：JP2007074658
申请日：2007-03-22
申请人： Hitachi Global Storage Technologies Netherlands Bv , ヒタチグローバルストレージテクノロジーズネザーランドビーブイ
发明人： KIMURA WATARU , IWAKURA TADAYUKI , MARUYAMA YOJI
IPC分类号： G11B5/31
CPC分类号： G11B5/1278 , G11B5/112 , G11B5/3116 , G11B5/3146
摘要： PROBLEM TO BE SOLVED: To provide a magnetic head for perpendicular recording which has a high recording magnetic field strength and an excellent recording magnetic field distribution in narrow track width.
SOLUTION: The magnetic head for perpendicular recording comprises a playback part 11 and a recording part 12, wherein the recording part 12 has a main magnetic pole layer 35, a lower sub magnetic pole layer 31, an upper sub magnetic pole layer 34, a pedestal-shaped magnetic layer 36, and a coil conductor 39 for generating magnetic flux in the main magnetic pole layer 35. Lower and upper auxiliary magnetic pole layers 32 and 33 are provided adjacent to the main magnetic pole layer 35 of the recording part 12 on a leading side and a trailing side with respect to a medium moving direction, retreating from a floating surface 41. The retreat amount of the upper auxiliary magnetic pole layer 33 is set smaller than the retreat amount of the lower auxiliary magnetic pole layer 32.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有高记录磁场强度和窄轨迹宽度的良好记录磁场分布的用于垂直记录的磁头。解决方案：用于垂直记录的磁头包括重放部分11和记录部分12，其中记录部分12具有主磁极层35，下副磁极层31，上副磁极层34 基座状磁性层36和用于在主磁极层35中产生磁通的线圈导体39.下部和上部辅助磁极层32和33设置在记录部分的主磁极层35附近 12相对于介质移动方向在前导侧和后侧相反，从浮动表面41退回。上辅助磁极层33的退避量设定为小于下辅助磁极层32的退避量版权所有（C）2009，JPO＆INPIT

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