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    • 11. 发明专利
    • Perpendicular magnetic recording head
    • 全能磁记录头
    • JP2011014207A
    • 2011-01-20
    • JP2009159172
    • 2009-07-03
    • 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
    • MARUYAMA YOJIIWAKURA TADAYUKIOKAI TETSUYASHIINA HIROMIKUDO KAZUE
    • G11B5/31
    • G11B5/3116G11B5/112G11B5/1278G11B5/3146G11B5/315G11B5/3163
    • PROBLEM TO BE SOLVED: To heighten both a recording magnetic field strength and a magnetic field gradient for achieving high density recording in a perpendicular magnetic recording head.SOLUTION: A non-magnetic film 19-1 and a non-magnetic film 19-2 are provided on an upper part (trailing side) and both sides of a main magnetic pole 11 of the perpendicular magnetic recording head, respectively. A magnetic shield 60 is provided via these non-magnetic films. The upper part of the magnetic shield 60 is magnetically connected to an auxiliary magnetic pole 17 to be a first magnetic film. Soft magnetic films having saturation magnetic flux densities different from each other are continuously connected in a depth direction of the magnetic shield 60, a first soft magnetic film 12 having a high saturation magnetic flux density is provided to be exposed to a floating surface 98 and a second soft magnetic film 14 having a relatively low saturation magnetic flux density is provided in a position retreating from the floating surface via a non-magnetic film 13 to be a first non-magnetic film.
    • 要解决的问题:提高在垂直磁记录头中实现高密度记录的记录磁场强度和磁场梯度。解决方案:非磁性膜19-1和非磁性膜19-2是 分别设置在垂直磁记录头的主磁极11的上部(后侧)和两侧。 经由这些非磁性膜提供磁屏蔽60。 磁屏蔽60的上部与作为第一磁性膜的辅助磁极17磁性连接。 具有彼此不同的饱和磁通密度的软磁性膜在磁屏蔽60的深度方向上连续地连接,具有高饱和磁通密度的第一软磁性膜12被暴露于浮动表面98和 具有相对较低的饱和磁通密度的第二软磁性膜14设置在从浮动表面经由非磁性膜13退回成为第一非磁性膜的位置。
    • 12. 发明专利
    • Magnetic head
    • 磁头
    • JP2008010052A
    • 2008-01-17
    • JP2006178013
    • 2006-06-28
    • Fujitsu Ltd富士通株式会社
    • ODAGIRI MITSURUAKIMOTO HIDEYUKIKATO MASAYASHIRATAKI HIROSHI
    • G11B5/39
    • G11B5/398G11B5/112G11B5/3912
    • PROBLEM TO BE SOLVED: To provide a magnetic head which has stabilized characteristics by preventing a variation in output of read elements caused by a variation in magnetic domain structure of an upper shield and a lower shield, and has improved production yield.
      SOLUTION: The magnetic head provided with the shield 30 magnetically shielding the read element 10 of a read head, is characterized in that an external shape of the shield 30 is formed in a hexagon in a plane form and one side of the shield 30 is arranged on a floating plane 40 of the magnetic head in the same plane. The shield 30 is formed usually in line symmetry with respect to the direction of core width for an arrangement position of the read element and line symmetry in the direction of height.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:通过防止由上屏蔽和下屏蔽的磁畴结构的变化引起的读取元件的输出变化来提供具有稳定特性的磁头,并且具有提高的生产率。 解决方案:设置有屏蔽层30的磁头屏蔽读取头的读取元件10的磁头的特征在于,屏蔽件30的外部形状以六边形形式形成并且屏蔽的一侧 30设置在同一平面上的磁头的浮动平面40上。 屏蔽30通常相对于芯宽度的方向线对称,用于读取元件的布置位置和沿着高度方向的线对称。 版权所有(C)2008,JPO&INPIT
    • 17. 发明专利
    • Layered magnetic structure, method for manufacturing layered magnetic structure, and reading element
    • 层状磁结构,制造层状磁结构的方法和读取元件
    • JP2013089283A
    • 2013-05-13
    • JP2012226849
    • 2012-10-12
    • Seagate Technology Llcシーゲイト テクノロジー エルエルシー
    • CAROLYN PITCHER VAN DORNTHOMAS ROY BOONSTRA
    • G11B5/39
    • G11B5/39G11B5/11G11B5/112G11B5/3169G11B5/3912G11B5/40Y10T428/1121Y10T428/1164
    • PROBLEM TO BE SOLVED: To provide a layered magnetic structure that includes one or more stop layers which do not substantially deteriorate, and resist chemical etching and mechanical polishing of the layered magnetic structure.SOLUTION: Tolerances for manufacturing reader structures for transducer heads continue to grow smaller and storage density in corresponding storage media increases. Reader stop layers may be utilized during manufacturing of reader structures to protect various layers of the reader structure from recession and/or scratches while processing other non-protected layers of the reader structure. For example, the stop layer may have a very low polish rate during mechanical or chemical-mechanical polishing. Surrounding areas may be significantly polished while a structure protected by a stop layer with a very low polish rate is substantially unaffected. The stop layer may then be removed via etching, for example, after the mechanical or chemical-mechanical polishing is completed.
    • 解决的问题:提供一种层状磁性结构,其包括一个或多个基本上不劣化的阻挡层,并且抵抗层状磁性结构的化学蚀刻和机械抛光。 解决方案:用于传感器头的制造读取器结构的公差继续增长,相应存储介质中的存储密度增加。 在读取器结构的制造期间可以利用读取器停止层来保护读取器结构的各个层免于衰退和/或划伤,同时处理读取器结构的其它未受保护的层。 例如,在机械或化学机械抛光期间,停止层可能具有非常低的抛光速率。 可以显着地抛光周围区域,而由具有非常低的抛光速率的停止层保护的结构基本上不受影响。 然后可以例如在机械或化学机械抛光完成之后通过蚀刻去除停止层。 版权所有(C)2013,JPO&INPIT
    • 19. 发明专利
    • Magnetic head for perpendicular recording
    • 磁头记录
    • JP2008234777A
    • 2008-10-02
    • JP2007074658
    • 2007-03-22
    • 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
    • KIMURA WATARUIWAKURA TADAYUKIMARUYAMA YOJI
    • G11B5/31
    • G11B5/1278G11B5/112G11B5/3116G11B5/3146
    • 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
    • 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