公开(公告)号：US06987644B2

公开(公告)日：2006-01-17

申请号：US10716830

申请日：2003-11-17

申请人： Kiyoshi Sato ,  Sumihito Morita

发明人： Kiyoshi Sato ,  Sumihito Morita

IPC分类号： G11B5/147 ,  G11B5/17

CPC分类号： G11B5/3967 ,  G11B5/1276

摘要： A thin film magnetic head and a method for manufacturing the same is provided, wherein first coil pieces and second coil pieces provided one above the other with a magnetic pole layer therebetween are electrically connected to each other with reliability and with ease, and the above-described magnetic pole layer can be provided on a flattened surface. A laminate provided on a coil insulation layer can be formed on a flattened surface and, therefore, the above-described magnetic pole layer can be formed into a predetermined shape. As a result, the track width can have a predetermined dimension, and the second coil pieces provided on the above-described laminate can be reliably, easily connected to the top surfaces of connection layers exposed at the top surface of the coil insulating layer.

摘要翻译： 提供一种薄膜磁头及其制造方法，其中在它们之间具有磁极层的第一线圈片和第二线圈片之间的可靠性和电容性彼此电连接， 可以在平坦表面上设置上述磁极层。 设置在线圈绝缘层上的层叠体可以形成在平坦表面上，因此可以将上述磁极层形成为预定的形状。 结果，轨道宽度可以具有预定尺寸，并且设置在上述层压体上的第二线圈片可以可靠地容易地连接到暴露在线圈绝缘层的顶表面的连接层的顶表面。

公开(公告)号：US06894869B2

公开(公告)日：2005-05-17

申请号：US10160397

申请日：2002-05-31

申请人： Matthew P. Dugas

发明人： Matthew P. Dugas

IPC分类号： G11B5/65 ,  G11B5/127 ,  G11B5/193 ,  G11B5/29 ,  G11B5/31 ,  G11B5/48 ,  G11B5/584 ,  G11B5/596 ,  G11B5/133 ,  G11B5/187

CPC分类号： G11B5/23 ,  G11B5/127 ,  G11B5/1276 ,  G11B5/193 ,  G11B5/232 ,  G11B5/235 ,  G11B5/29 ,  G11B5/295 ,  G11B5/3116 ,  G11B5/4893 ,  G11B5/584 ,  G11B20/1211 ,  G11B20/1217 ,  Y10T29/49055 ,  Y10T29/49057

摘要： A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations.

摘要翻译： 通过从相对的铁素体块形成衬底来制造薄膜磁记录头，所述铁氧体块在它们之间具有陶瓷构件。 然后将该结构切成多个柱，其中每个柱具有铁素体/陶瓷组合。 每列表示完成的头中的单个通道。 然后切割一块陶瓷以匹配柱状结构，并将两个结合在一起。 然后将接合结构切割或研磨直到形成头部，其中陶瓷设置在每个通道之间。 然后将铁氧体背隙添加到每个通道，使磁通路径的磁阻最小化。 该薄膜在头部被图案化以优化各种通道配置。

公开(公告)号：US20050099724A1

公开(公告)日：2005-05-12

申请号：US10954099

申请日：2004-09-30

申请人： Shiho Nakamura ,  Shigeru Haneda

发明人： Shiho Nakamura ,  Shigeru Haneda

IPC分类号： G11B5/127 ,  G11B5/39 ,  G11C11/15 ,  H01L21/8246 ,  H01L27/105 ,  H01L43/00 ,  H01L43/08

CPC分类号： G11C11/15 ,  G11B5/1276

摘要： A magnetic device comprises first through third ferromagnetic layers, first and second intermediate layers and a couple of electrodes. The first ferromagnetic layer includes magnetic layers and one or more nonmagnetic layers which are alternately stacked, at least one layer of the magnetic layers has magnetization substantially fixed to a first direction, and two or more layers of the magnetic layers are ferromagnetically coupled via the nonmagnetic layers while having easy axes of magnetization parallel to a film plane. The second ferromagnetic layer has magnetization substantially fixed to a second direction. The third ferromagnetic layer is provided between the first ferromagnetic layer and the second ferromagnetic layer. The third ferromagnetic layer has a variable direction of magnetization. The first and second intermediate layers are provided between the ferromagnetic layers. The electrodes are configured to provide write current between the first and second ferromagnetic layers to cause spin-polarized electrons to act on the third ferromagnetic layer so that the direction of magnetization of the third ferromagnetic layer is determined depending on a direction of the current. The ferromagnetic coupling has a strength such that a parallel magnetic alignment of the magnetic layers is maintained when the write current.

摘要翻译： 磁性器件包括第一至第三铁磁层，第一和第二中间层以及一对电极。 第一铁磁层包括交替堆叠的磁性层和一个或多个非磁性层，至少一层磁性层具有基本上固定在第一方向上的磁化强度，并且两层或多层磁性层通过非磁性铁磁耦合 同时具有平行于膜平面的容易的磁化轴。 第二铁磁层具有基本固定到第二方向的磁化。 第三铁磁层设置在第一铁磁层和第二铁磁层之间。 第三铁磁层具有可变的磁化方向。 第一和第二中间层设置在铁磁层之间。 电极被配置为在第一和第二铁磁层之间提供写入电流，以使自旋极化电子作用在第三铁磁层上，使得第三铁磁层的磁化方向取决于电流的方向。 铁磁耦合具有当写入电流时保持磁性层的并行磁性取向的强度。

公开(公告)号：US20010042300A1

公开(公告)日：2001-11-22

申请号：US09879781

申请日：2001-06-12

发明人： Seiichi Ogata ,  Tadashi Saito ,  Teruo Inaguma ,  Shinji Takahashi ,  Yoshihiko Inoue

IPC分类号： G11B005/127 ,  H04R031/00

CPC分类号： G11B5/1276 ,  G11B5/1878 ,  G11B5/314 ,  G11B5/53 ,  Y10T29/49032 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49055

摘要： A magnetic head having optimum recording/reproducing characteristics and a method for producing the magnetic head. A pair of magnetic core halves 2, 3, each having a substrate 4 and a thin magnetic metal film 6 formed obliquely on it, are bonded together via a non-magnetic material C for defining a magnetic gap. A portion of the substrate faces a junction surface 8 of the magnetic core halves 2, 3. The substrate portion is arranged for facing an end face of the magnetic meta film 6 of the opposite side magnetic core half facing the junction surface 8.

摘要翻译： 具有最佳记录/再现特性的磁头及其制造方法。 一对磁芯半部2,3分别通过非磁性材料C接合在一起，每个磁芯半体2,3具有基板4和在其上倾斜形成的薄磁性金属膜6，以限定磁隙。 衬底的一部分面对磁芯半部2,3的接合表面8.衬底部分被布置为面对面对接合面8的相对侧磁芯半部的磁性超薄膜6的端面。

公开(公告)号：US5943195A

公开(公告)日：1999-08-24

申请号：US826238

申请日：1997-03-27

申请人： Akinaga Natsui ,  Norimoto Nouchi

发明人： Akinaga Natsui ,  Norimoto Nouchi

IPC分类号： G11B5/105 ,  G11B5/127 ,  G11B5/187 ,  G11B5/40 ,  G11B5/53 ,  G11B33/14 ,  G11B5/235

CPC分类号： G11B5/105 ,  G11B5/1276 ,  G11B5/1878 ,  G11B5/40 ,  G11B5/53 ,  G11B33/14

摘要： A metal-in-gap type magnetic head apparatus in which a pair of magnetic core half bodies, comprising a metallic magnetic film containing Fe as a main component on at least one magnetic core half body, are joined. In the above mentioned structure, at least a part of the surface of a supporting base of the magnetic head comprises a material having a lower standard electrode potential than the metallic magnetic film and thereby the metallic magnetic film has a high saturation flux density. Moreover, a magnetic head apparatus and magnetic recording apparatus of the present invention can have a high reliability even in the strong corrosive environment.

摘要翻译： 一种金属间隙型磁头装置，其中包括在至少一个磁芯半体上包含以Fe为主要成分的金属磁性膜的一对磁芯半体。 在上述结构中，磁头的支撑基底的表面的至少一部分包括具有比金属磁性膜低的标准电极电位的材料，从而金属磁性膜具有高的饱和磁通密度。 此外，即使在强腐蚀性环境下，本发明的磁头装置和磁记录装置也可以具有高的可靠性。

公开(公告)号：US5936815A

公开(公告)日：1999-08-10

申请号：US931743

申请日：1997-09-16

申请人： Seiji Kumagai ,  Junichi Honda ,  Norikatsu Fujisawa ,  Kyu Kanno

发明人： Seiji Kumagai ,  Junichi Honda ,  Norikatsu Fujisawa ,  Kyu Kanno

IPC分类号： G11B5/31 ,  G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/147

CPC分类号： G11B5/1276 ,  G11B5/1878 ,  G11B5/127 ,  G11B5/1272

摘要： A thin film type magnetic head that electromagnetic conversion efficiency is improved by making gradually magnetic resistance larger with approaching to a magnetic gap can be provided. There is disclosed a magnetic head including a pair of magnetic core half members having nonmagnetic substrates and magnetic metal films formed on the nonmagnetic substrates and a coil formed at a concave part by a thin film forming process, the pair of magnetic core half members being jointed to each other opposite to each other through a magnetic gap formed between the respective magnetic metal films, the concave part formed on the surface formed by joining at least one of the magnetic metal films and the other magnetic metal film, wherein assistant cores consisting of magnetic materials are joined on the side of the surface by joining a pair of nonmagnetic substrates and the magnetic metal films are formed connected with the assistant cores.

摘要翻译： 可以提供通过使接近磁隙逐渐变大的磁阻来提高电磁转换效率的薄膜型磁头。 公开了一种磁头，其包括具有非磁性基板的一对磁芯半部件和形成在非磁性基板上的磁性金属膜，以及通过薄膜形成工艺在凹部形成的线圈，所述一对磁芯半体连接 通过形成在各个磁性金属膜之间的磁隙彼此相对，通过接合至少一个磁性金属膜和另一个磁性金属膜形成的表面上形成的凹部，其中由磁性金属膜组成的辅助芯 材料通过连接一对非磁性基底而在表面的一侧接合，并且形成与辅助芯相连接的磁性金属膜。

公开(公告)号：US5764450A

公开(公告)日：1998-06-09

申请号：US829380

申请日：1997-03-31

申请人： Heikichi Sato ,  Hitoshi Kimura

发明人： Heikichi Sato ,  Hitoshi Kimura

IPC分类号： G11B5/127 ,  G11B5/17 ,  G11B5/187 ,  G11B5/40 ,  G11B5/147

CPC分类号： G11B5/1878 ,  G11B5/1276 ,  G11B5/17 ,  G11B5/1871 ,  G11B5/40

摘要： A magnetic head in which a pair of magnetic core halves each having a winding slot for placing a coil are abutted and unified to each other by thin magnetic metal films interposed in-between, and in which a magnetic gap is formed between abutting surfaces of the magnetic core halves. A bend is formed in the winding slot for bending the thin magnetic metal film at an acute angle when seen in cross-section. The magnetic head has a structure for prohibiting peeling of the thin magnetic metal film.

摘要翻译： 一个磁头，其中一个具有用于放置线圈的卷绕槽的磁芯半部通过介于其间的薄的磁性金属膜彼此抵靠并且彼此一体化，并且在其间形成有磁隙 磁芯半部。 在卷绕槽中形成弯曲部，用于在横截面看时以锐角弯曲薄磁性金属膜。 磁头具有禁止薄磁性金属膜剥离的结构。

公开(公告)号：US5173825A

公开(公告)日：1992-12-22

申请号：US108809

申请日：1987-10-14

申请人： Takashi Suzuki ,  Takeshi Sawada ,  Toshio Yamanaka ,  Tsuyoshi Orikasa ,  Hiroyuki Suzuki ,  Makoto Kameyama ,  Kiyozumi Niizuma

发明人： Takashi Suzuki ,  Takeshi Sawada ,  Toshio Yamanaka ,  Tsuyoshi Orikasa ,  Hiroyuki Suzuki ,  Makoto Kameyama ,  Kiyozumi Niizuma

IPC分类号： G11B5/127 ,  G11B5/187

CPC分类号： G11B5/1276 ,  G11B5/1878

摘要： A magnetic head has a magnetic core comprising a first half core on which a thin magnetic metal film is deposited and a second half core which is opposed to the first half core across a magnetic gap. The film thickness of the thin magnetic metal film of the first half core continuously varies at about a constant rate within a portion thereof adjacent to the effective portion of the magnetic gap.

摘要翻译： 磁头具有磁芯，该磁芯包括沉积薄磁性金属膜的第一半芯和与磁隙相对的第一半芯的第二半芯。 第一半芯的薄磁性金属膜的膜厚在与磁隙的有效部分相邻的部分内以恒定的速度连续变化。

公开(公告)号：US11676627B2

公开(公告)日：2023-06-13

申请号：US17396234

申请日：2021-08-06

申请人： Western Digital Technologies, Inc.

发明人： Quan-Chiu Harry Lam

IPC分类号： G11B5/31 ,  G11B5/48 ,  G11B5/187 ,  G11B5/11 ,  G11B5/127

CPC分类号： G11B5/315 ,  G11B5/11 ,  G11B5/1276 ,  G11B5/187 ,  G11B5/3153 ,  G11B5/484

摘要： Aspects of the present disclosure generally relate to a magnetic recording head that includes a main pole, a leading shield, a first side shield disposed on a first side of the main pole, a second side shield disposed on a second side of the main pole, and a trailing shield. The trailing shield is disposed on a trailing side of the main pole. One or more approaches are disclosed to control return-fluxes. In some embodiments, at least one of the upper return pole, the leading shield, the trailing shield, the first side shield, and the second side shield includes a laminate structure having at least a pair of ferromagnetic layers, and a non-magnetic spacer layer disposed between adjacent ferromagnetic layers. In some embodiments, one or more shunts are positioned, such as connecting the leading shield to the upper return pole in order to create circuits to control magnetic flux.

公开(公告)号：US08533937B1

公开(公告)日：2013-09-17

申请号：US13275926

申请日：2011-10-18

申请人： Jinwen Wang ,  Weimin Si ,  Jianxin Fang ,  Ying Hong ,  Hongzhou Jiang ,  Ching-Huang Lu ,  Yan Chen ,  Donghong Li ,  Lien-Chang Wang ,  Lieping Zhong ,  Tao Pan

发明人： Jinwen Wang ,  Weimin Si ,  Jianxin Fang ,  Ying Hong ,  Hongzhou Jiang ,  Ching-Huang Lu ,  Yan Chen ,  Donghong Li ,  Lien-Chang Wang ,  Lieping Zhong ,  Tao Pan

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/112 ,  G11B5/1276 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3153 ,  G11B5/3163 ,  H04R31/00 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： A method or forming a wrapped-around shielded perpendicular magnetic recording writer pole is disclosed. A structure comprising a leading shield layer and an intermediate layer disposed over the leading shield layer is provided, the intermediate layer comprising a pole material and a dielectric material. A trench is formed in the dielectric material. A non-magnetic layer in the trench is removed via an ion beam etching process. A seed layer is deposited in the trench and over the pole material. A magnetic material comprising a side shield layer is deposited on at least a portion of the seed layer.

摘要翻译： 公开了一种方法或形成缠绕的屏蔽垂直磁记录写入极。 提供了包括引导屏蔽层和设置在引导屏蔽层之上的中间层的结构，所述中间层包括极材料和电介质材料。 在电介质材料中形成沟槽。 通过离子束蚀刻工艺去除沟槽中的非磁性层。 种子层沉积在沟槽中并在极材料上方。 包含侧屏蔽层的磁性材料沉积在籽晶层的至少一部分上。