公开(公告)号：US07170719B1

公开(公告)日：2007-01-30

申请号：US09067795

申请日：1998-04-28

Applicant: Moris M. Dovek ,  G. Herbert Lin ,  Michael McNeil

Inventor： Moris M. Dovek ,  G. Herbert Lin ,  Michael McNeil

IPC: G11B5/127 ,  G11B5/33

CPC classification number: G11B5/1278 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/3183 ,  G11B5/3919 ,  G11B5/3967 ,  G11B2005/0002

Abstract: The present invention provides a flux-guided head for use in a magnetic recording system, such as a disk drive. The head includes a write element that is capable of writing magnetic polarity transitions into the surface of a magnetic media, such as a magnetic disk, using vertical/perpendicular recording techniques. Further, a read element is provided that includes a magnetoresistive element that, when reading perpendicularly-recorded magnetic transitions from the surface of the magnetic media, produces a readback pulse signal having a substantially Lorentzian pulse shape.

Abstract translation: 本发明提供一种用于诸如盘驱动器的磁记录系统中的磁通引导头。 磁头包括一个能够使用垂直/垂直记录技术将磁极性转变写入诸如磁盘的磁介质表面的写入元件。 此外，提供了一种读取元件，其包括磁阻元件，当从磁介质的表面读取垂直记录的磁转变时，产生具有基本上洛伦兹脉冲形状的回读脉冲信号。

公开(公告)号：US07100268B2

公开(公告)日：2006-09-05

申请号：US11172734

申请日：2005-07-01

Applicant: Mohamad Towfik Krounbi ,  Mark E. Re

Inventor： Mohamad Towfik Krounbi ,  Mark E. Re

IPC: G11B5/42 ,  H04R31/00

CPC classification number: G11B5/3954 ,  G11B5/2652 ,  G11B5/3113 ,  G11B5/3163 ,  G11B5/3183 ,  G11B5/3967 ,  G11B5/4886 ,  G11B19/04 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/4906

Abstract: A method of making a magnetic head includes imbedding a coil layer in an insulation stack. The coil layer is formed with a filament that extends about a central axis. The central axis is perpendicular to a planar head surface and a coil plane. First and second pole pieces are formed with the insulation stack sandwiched between the first and second pole pieces. A first shield layer having first and second major planar thin film surfaces is joined by a third edge with the first major planar thin film surface of the first shield layer forming a portion of the planar head surface. A magnetoresistive (MR) sensor and first and second gap layers are formed with the MR sensor sandwiched between the first and second gap layers and the first and second gap layers located between the third edge and the first horizontal component and with the MR sensor and the first and second gap layers forming portions of the planar head surface.

Abstract translation: 制造磁头的方法包括将线圈层嵌入绝缘堆叠中。 线圈层形成有围绕中心轴线延伸的细丝。 中心轴垂直于平面头表面和线圈平面。 第一和第二极片形成有夹在第一和第二极靴之间的绝缘堆叠。 具有第一和第二主平面薄膜表面的第一屏蔽层通过第三边缘连接，第一屏蔽层的第一主平面薄膜表面形成平面头表面的一部分。 形成磁阻（MR）传感器和第一和第二间隙层，其中MR传感器夹在第一和第二间隙层之间，第一和第二间隙层位于第三边缘和第一水平部件之间，并且与MR传感器和 第一和第二间隙层形成平面头表面的部分。

公开(公告)号：US20060171071A1

公开(公告)日：2006-08-03

申请号：US11339366

申请日：2006-01-25

Applicant: Hisayuki Yazawa ,  Shio Takahashi

Inventor： Hisayuki Yazawa ,  Shio Takahashi

IPC: G11B5/147

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/3113 ,  H01F10/16

Abstract: A soft magnetic film is formed of a CoFeNi alloy containing trace amounts of chlorine and sulfur as impurities. The stress of the soft magnetic film can be reduced effectively, specifically to 1,200 MPa or less, by adjusting the concentration ratio of chlorine to sulfur within the range from 1 to 60. In addition, variations in film stress can be reduced to provide higher yields of CoFeNi alloy films with low stresses.

Abstract translation: 软磁膜由含有痕量氯和硫作为杂质的CoFeNi合金形成。 通过将氯与硫的浓度比调节在1〜60的范围内，可以有效地降低软磁性膜的应力，特别是降低至1200MPa以下。此外，可以降低薄膜应力的变化，提供更高的收率 的低应力CoFeNi合金薄膜。

公开(公告)号：US20060078762A1

公开(公告)日：2006-04-13

申请号：US11290747

申请日：2005-11-30

Applicant: Kenji Noma ,  Masaaki Matsuoka ,  Hitoshi Kanai

Inventor： Kenji Noma ,  Masaaki Matsuoka ,  Hitoshi Kanai

IPC: G11B5/33

CPC classification number: H01F10/16 ,  G11B5/187 ,  G11B5/3113 ,  G11C11/16 ,  H01F10/30 ,  H01F41/18 ,  H01F41/20 ,  H01F41/22 ,  Y10T428/115 ,  Y10T428/32

Abstract: There is provided a magnetic material with a high saturation magnetization of 2.46 teslas or above. By using this magnetic material in a recording head, it is possible to record information with a higher density on a recording medium. The magnetic material can also be applied to various kinds of solid-state devices. The magnetic material is composed of an alloy film made of iron, cobalt, and palladium, wherein a mole percentage content of palladium is set equal to 0.7% or greater but less than 1.0%, and the magnetic material is formed by dry processing.

Abstract translation: 提供了具有2.46特斯拉或以上的高饱和磁化强度的磁性材料。 通过在记录头中使用该磁性材料，可以在记录介质上记录更高密度的信息。 磁性材料也可以应用于各种固态器件。 磁性材料由铁，钴和钯制成的合金膜构成，其中钯的摩尔百分含量设定为0.7％以上且小于1.0％，磁性材料通过干式加工形成。

公开(公告)号：US20050264925A1

公开(公告)日：2005-12-01

申请号：US11172735

申请日：2005-07-01

Applicant: Mohamad Krounbi ,  Mark Re

Inventor： Mohamad Krounbi ,  Mark Re

IPC: G11B5/012 ,  G11B5/127 ,  G11B5/17 ,  G11B5/265 ,  G11B5/31 ,  G11B5/33 ,  G11B5/39 ,  G11B5/48 ,  G11B19/04

CPC classification number: G11B5/3954 ,  G11B5/2652 ,  G11B5/3113 ,  G11B5/3163 ,  G11B5/3183 ,  G11B5/3967 ,  G11B5/4886 ,  G11B19/04 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/4906

Abstract: A horizontal combined head is provided which has both a thin film write and an MR read element located at an air bearing surface (ABS). The read element can be formed with a track width that is independent of the track width of the write element. The MR sensor or the read element is separated from one of the first and second pole pieces of the write element by an insulation layer. Accordingly, the shields for the read element remain more stable after a write operation. In one embodiment of the present invention a single stripe MR sensor is employed while in a second embodiment a dual stripe MR sensor is employed. A method of the invention includes forming the dual MR stripe in a single process step so that the dual MR stripes of the dual MR sensor are near identical for implementing near absolute common mode rejection of noise.

Abstract translation: 提供了水平组合头，其具有位于空气轴承表面（ABS）处的薄膜写入和MR读取元件。 读取元件可以形成为与写入元件的轨迹宽度无关的轨道宽度。 MR传感器或读取元件通过绝缘层与写入元件的第一和第二极片中的一个分离。 因此，读写元件的屏蔽在写操作之后保持更稳定。 在本发明的一个实施例中，采用单条MR传感器，而在第二实施例中采用双条MR传感器。 本发明的方法包括在单个工艺步骤中形成双MR条纹，使得双MR传感器的双MR条带几乎相同以实现噪声的近绝对共模抑制。

公开(公告)号：US20050168876A1

公开(公告)日：2005-08-04

申请号：US11095533

申请日：2005-04-01

Applicant: Gen Oikawa ,  Shuichi Kojima ,  Harunobu Saito ,  Noriyuki Saiki ,  Masayasu Kagawa ,  Akira Kondo ,  Kenji Ishikake ,  Hiromi Shiina

Inventor： Gen Oikawa ,  Shuichi Kojima ,  Harunobu Saito ,  Noriyuki Saiki ,  Masayasu Kagawa ,  Akira Kondo ,  Kenji Ishikake ,  Hiromi Shiina

IPC: G11B5/31 ,  G11B5/39 ,  H01F10/14 ,  G11B5/33 ,  G11B5/127

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3103 ,  G11B5/3113 ,  G11B5/3163 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49044

Abstract: In formation of an upper shield of a magnetic thin film head by electroplating, a current density of electroplating is regulated stepwise with time. Thus, in the upper shield formation, a film composition and magnetic characteristic with respect to the direction of film thickness can be controlled precisely, making it possible to provide a magnetic thin film head featuring significantly reduced noise-after-write and output fluctuation.

Abstract translation: 在通过电镀形成磁性薄膜头的上屏蔽时，电流的电流密度随时间逐步调节。 因此，在上屏蔽形成中，可以精确地控制膜组成和相对于膜厚度方向的磁特性，使得可以提供具有显着降低的写入后和输出波动的磁性薄膜头。

公开(公告)号：US06894877B1

公开(公告)日：2005-05-17

申请号：US10112685

申请日：2002-03-27

Applicant: Bill W. Crue, Jr. ,  Zhupei Shi ,  Lijun Tong ,  Carlos Corona

Inventor： Bill W. Crue, Jr. ,  Zhupei Shi ,  Lijun Tong ,  Carlos Corona

IPC: G11B5/31 ,  G11B5/39 ,  G11B5/187

CPC classification number: G11B5/3967 ,  G11B5/3113 ,  G11B5/313

Abstract: A compact write element includes a conductive shield layer, an insulating write gap layer, a pole pedestal, a coil, and a conductive pole layer, and, in some embodiments also includes a backgap. The pole pedestal and the coil, and, in some embodiments the backgap, constitute a self-aligned array of components that may be formed in a single masking operation to allow for very tight tolerances between the components for a shorter yoke length. The pole layer is substantially flat and parallel to the conductive shield layer, providing for a shorter stack height. Also, a compact MR read/write head includes such a write element and a magnetic data storage and retrieval system includes the compact MR read/write head having such a write element.

Abstract translation: 紧凑的写元件包括导电屏蔽层，绝缘写间隙层，极基座，线圈和导电极层，并且在一些实施例中还包括后隙。 磁极基座和线圈，并且在一些实施例中为反向间隙，构成可以在单个掩蔽操作中形成的自对准阵列阵列，以允许组件之间用于较短磁轭长度的非常严格的公差。 极层基本上平坦且平行于导电屏蔽层，从而提供较短的堆叠高度。 此外，紧凑的MR读/写头包括这样的写入元件，并且磁数据存储和检索系统包括具有这种写入元件的小型MR读/写头。

公开(公告)号：US20040246630A1

公开(公告)日：2004-12-09

申请号：US10852749

申请日：2004-05-24

Applicant: ALPS ELECTRIC CO., LTD.

Inventor： Katsuhiko Otomo

IPC: G11B005/127 ,  G11B005/39

CPC classification number: G11B5/3903 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/3113 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/3967

Abstract: A magnetic head includes a metallic material layer between a lower core layer and an upper shield layer. This metallic material layer extends to the rear of the magnetic head in the height direction to overlap with a first metal layer. The metallic material layer can therefore efficiently dissipate joule heat generated from a write head section to the outside of the magnetic head through the first metal layer. In addition, the metallic material layer can block a fluctuating magnetic field generated from the write head section. Thus, this magnetic head can reduce variations in the magnetic domain structures of upper and lower shield layers to stabilize the read output of a read head section.

Abstract translation: 磁头包括在下芯层和上屏蔽层之间的金属材料层。 该金属材料层在高度方向上延伸到磁头的后部以与第一金属层重叠。 因此，金属材料层可以通过第一金属层有效地将从写入头部产生的焦耳热消散到磁头的外部。 此外，金属材料层可以阻挡从写入头部产生的波动的磁场。 因此，该磁头可以减小上屏蔽层和下屏蔽层的磁畴结构的变化，以稳定读头部分的读取输出。

公开(公告)号：US06829122B2

公开(公告)日：2004-12-07

申请号：US09961594

申请日：2001-09-24

Applicant: Kenichiro Yamada ,  Naoki Mukoyama ,  Hidehiko Suzuki ,  Hitoshi Kanai

Inventor： Kenichiro Yamada ,  Naoki Mukoyama ,  Hidehiko Suzuki ,  Hitoshi Kanai

IPC: G11B539

CPC classification number: B82Y10/00 ,  G11B5/3113 ,  G11B5/3903 ,  G11B5/3929 ,  G11B5/3932

Abstract: A magnetic head of a magnetoresistance type is provided. The magnetic head comprises a magnetoresistance film, an underlying layer formed on each of both sides of the magnetoresistance film, and a magnetic-domain regulating film formed on the underlying layer so as to regulate a magnetic domain of a free magnetic layer in the magnetoresistance film. The underlying layer has a laminated structure of a tungsten-(W)-group metal layer formed on a tantalum-(Ta)-group metal layer. The underlying layer is formed so thick as to arrange the magnetic-domain regulating film at a position corresponding to the free magnetic layer.

Abstract translation: 提供磁阻型磁头。 磁头包括磁阻膜，形成在磁阻膜的两侧的每一侧上的下层，以及形成在下层上的磁畴调节膜，以调节磁阻膜中的自由磁性层的磁畴 。 下层具有在钽 - （Ta） - 金属层上形成的钨 - （W） - 金属层的叠层结构。 底层形成得如此厚以便将磁畴调节膜布置在与自由磁性层相对应的位置。

公开(公告)号：US06807031B2

公开(公告)日：2004-10-19

申请号：US10190182

申请日：2002-07-03

Applicant: Declan Macken ,  Gavin Brinkley ,  Taras Grigoryevich Pokhil ,  Alexandar Mikhailovich Shukh ,  Martin Louis Plumer

Inventor： Declan Macken ,  Gavin Brinkley ,  Taras Grigoryevich Pokhil ,  Alexandar Mikhailovich Shukh ,  Martin Louis Plumer

IPC: G11B539

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/3113 ,  G11B5/3903 ,  G11B2005/3996

Abstract: A transducing head includes at least three magnetic layers. At least two of these magnetic layers function as shields of a reader portion of the transducing head, and at least one of these magnetic layers functions as a pole of a writer portion of the transducing head. Importantly, at least one of the three magnetic layers is formed of a thin film structure having a first and a second ferromagnetic layer, a nonmagnetic spacer layer, and a bias layer. The spacer layer is positioned between the first and the second ferromagnetic layers. The bias layer is positioned adjacent the first ferromagnetic layer. The second ferromagnetic layer has a thickness-magnetic moment product substantially equal to a thickness-magnetic moment product of the first ferromagnetic layer. An easy axis of the second ferromagnetic layer is substantially parallel to an easy axis of the first ferromagnetic layer.

Abstract translation: 换能头包括至少三个磁性层。 这些磁性层中的至少两个用作换能头的读取器部分的屏蔽，并且这些磁性层中的至少一个用作换能头的写入器部分的极点。 重要的是，三个磁性层中的至少一个由具有第一和第二铁磁层，非磁性间隔层和偏置层的薄膜结构形成。 间隔层位于第一和第二铁磁层之间。 偏置层位于第一铁磁层附近。 第二铁磁层具有基本上等于第一铁磁层的厚度 - 磁矩乘积的厚度 - 磁矩积。 第二铁磁层的易轴基本上平行于第一铁磁层的容易轴。