公开(公告)号：US06475650B2

公开(公告)日：2002-11-05

申请号：US09961292

申请日：2001-09-25

Applicant: Satoshi Watanabe ,  Toshiyuki Onogi ,  Masahiko Ichimura ,  Yoshimasa Ono ,  Tomihiro Hashizume ,  Yasuo Wada ,  Yuji Suwa

Inventor： Satoshi Watanabe ,  Toshiyuki Onogi ,  Masahiko Ichimura ,  Yoshimasa Ono ,  Tomihiro Hashizume ,  Yasuo Wada ,  Yuji Suwa

IPC: G11B539

CPC classification number: B82Y30/00 ,  B82B1/00 ,  B82B3/00 ,  B82Y15/00 ,  B82Y25/00 ,  B82Y40/00 ,  G11B5/00 ,  G11B5/3945 ,  G11B5/3961 ,  G11B5/3967 ,  G11B5/49 ,  G11B5/4984 ,  G11B2005/0005 ,  H01F1/0036 ,  H01F1/0302 ,  Y10S428/90 ,  Y10T428/1136 ,  Y10T428/1193 ,  Y10T428/32

Abstract: A ferromagnetic material can be formed in a very small size on the order of an atomic size and is capable of being stably magnetized. The ferromagnetic material comprises basic unit structures each consisting of a first atom (11), a second atom (12) of the same kind as the first atom (11), and a third atom (or atomic group) (13) of the same kind as the first atom (11) or of a kind different from that of the first atom (11). In each of the basic unit structures, the atoms are arranged on a surface of a substrate so that a chemical bond (14) is formed between the first atom or molecule and the third atom or molecule, a chemical bond (14) is formed between the second atom or molecule and the third atom or molecule, and a chemical bond or an electron path (15) not passing the third atom is formed between the first and the second atom or molecule, wherein said third atoms or molecules consist of As atoms.

Abstract translation: 铁磁材料可以以原子尺寸的数量级的非常小的尺寸形成，并且能够被稳定地磁化。 铁磁材料包括各自由与第一原子（11）相同类型的第一原子（11），第二原子（12）和与第一原子（11）相同种类的第二原子（12）和其第三原子（或原子团）（13）组成的基本单元结构 作为第一原子（11）或与第一原子（11）不同的一种。 在每个基本单元结构中，原子布置在基板的表面上，使得在第一原子或分子与第三原子或分子之间形成化学键（14），在第一原子或分子与第三原子或分子之间形成化学键（14）， 在第一和第二原子或分子之间形成第二原子或分子和第三原子或分子，以及不通过第三原子的化学键或电子通路（15），其中所述第三原子或分子由As原子 。

公开(公告)号：US06473276B1

公开(公告)日：2002-10-29

申请号：US09721850

申请日：2000-11-24

Applicant: Thomas Young Chang ,  Edward Hinpong Lee ,  Jyh-Shuey Jerry Lo

Inventor： Thomas Young Chang ,  Edward Hinpong Lee ,  Jyh-Shuey Jerry Lo

IPC: G11B539

CPC classification number: G11B5/3967 ,  G11B5/024 ,  G11B5/23 ,  G11B5/232 ,  G11B5/3116 ,  G11B5/3163 ,  Y10T29/49044 ,  Y10T29/49046

Abstract: A single-sided, notched write head is provided for writing narrow erase band servo tracks as well as a double-notched write head, and for writing data tracks better than a double-notched write head. The single-sided, notched write head writes a narrow erase band on the notched side and a wide erase band on the unnotched side. In one embodiment, only one side of the first pole piece layer is notched, and in another embodiment a first side of the first pole piece layer is notched more than a second side. By writing servo tracks only a fraction of the track width of the write head, a wide erase band region is overwritten so that a narrow erase band is on each side of the servo track. Data tracks are written with a narrow erase band on one side and a wide erase band on the other side. The wide erase band on one side of the data track allows more flexibility in spacing the read head from adjacent tracks. The single-sided, notched write head can be manufactured with methods that require less processing time than a double-notched write head. In one method, a notching layer is employed where removal of a small corner of the notching layer provides the first pole piece with a notch. Other methods employ photoresist to protect the side of the first pole piece that is not to be notched, and/or oscillating the workpiece less than 360°. so that milling is more concentrated at the notch site.

Abstract translation: 提供单面，带缺口的写入头，用于写入窄擦除带伺服磁道以及双切口写入头，并且用于比双切口写入头更好地写入数据轨道。 单面缺口写头在缺口侧写入窄擦除带，并在无缺口侧写入宽擦除带。 在一个实施例中，仅第一极靴层的一侧被切口，而在另一实施例中，第一极靴层的第一侧比第二侧更多地被切口。 通过仅将写入磁道的磁道宽度的一部分写入伺服磁道，将覆盖宽的擦除带区域，使得在伺服磁道的每一侧上存在窄的擦除带。 数据磁道在一侧写入窄的擦除频带，另一侧写入宽的擦除频带。 在数据轨道的一侧上的宽擦除带允许在读取头与相邻轨道间隔距离方面更加灵活。 单面，缺口写头可以使用比双切口写头要少的处理时间的方法制造。 在一种方法中，采用切口层，其中切口凹陷层的小角的移除为第一极片提供凹口。 其他方法使用光致抗蚀剂来保护第一极靴的不被切口的一侧，和/或使工件摆动小于360°。 使得铣削更集中在切口部位。

公开(公告)号：US06469873B1

公开(公告)日：2002-10-22

申请号：US09065868

申请日：1998-04-24

Applicant: Yoji Maruyama ,  Yoshio Suzuki ,  Ryoichi Nakatani ,  Hisashi Takano

Inventor： Yoji Maruyama ,  Yoshio Suzuki ,  Ryoichi Nakatani ,  Hisashi Takano

IPC: G11B539

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/035 ,  G11B5/3954 ,  G11B2005/0029 ,  G11B2005/3996

Abstract: It is the object of the invention to provide a magnetic head and a magnetic storage apparatus using the magnetic head provided with a signal reproducing means which is capable of using the same signal processing circuit as used for the conventional longitudinal magnetization film type recording medium even when a perpendicular magnetization film type recording medium is used. Because the present invention renders the reproducing signal generated from a perpendicular magnetization film Gaussian shaped (Lorentzian pulse), the same signal processing circuit as used for the conventional longitudinal magnetization film type recording medium can be used. To accomplish this object, in the reproducing means which is the component of the information reproducing component of the magnetic head, the first spin valve element and the second valve element are piled up, the magnetization direction of pinned layers of both elements is prescribed so as to be antiparallel each other, and lead electrodes of both elements are connected so as to be common. When two spin valve elements are piled up to compose a reproducing means, the first spin valve element is structured so as to have an Ru film between the first ferromagnetic film and the second ferromagnetic film and so as to have a Cu film between the second ferromagnetic film and the third ferromagnetic film, and the second spin valve element is structured so as to have a Cu film between the fourth ferromagnetic film and the fifth ferromagnetic film. These two elements are piled up with interposition of a desired spacer film adjacently.

Abstract translation: 本发明的目的是提供一种使用具有信号再现装置的磁头的磁头和磁存储装置，该装置能够使用与常规的纵向磁化膜式记录介质相同的信号处理电路，即使当 使用垂直磁化膜型记录介质。 因为本发明使得从垂直磁化膜高斯形（洛伦兹脉冲）产生的再现信号，可以使用与常规纵向磁化膜型记录介质相同的信号处理电路。 为了实现该目的，在作为磁头的信息再现部件的部件的再现装置中，第一自旋阀元件和第二阀元件堆叠，两个元件的钉扎层的磁化方向被规定为 反向平行，并且两个元件的引线电极连接成共同的。 当两个自旋阀元件堆积以构成再现装置时，第一自旋阀元件构造成在第一铁磁膜和第二铁磁膜之间具有Ru膜，并且在第二铁磁性元件之间具有Cu膜 膜和第三铁磁膜，并且第二自旋阀元件被构造成在第四铁磁膜和第五铁磁膜之间具有Cu膜。 这两个元件堆积在一起，相邻地插入所需的间隔膜。

公开(公告)号：US06459551B1

公开(公告)日：2002-10-01

申请号：US09468016

申请日：1999-12-20

Applicant: Yasuo Hayakawa

Inventor： Yasuo Hayakawa

IPC: G11B539

CPC classification number: G11B5/3903 ,  G11B5/3133 ,  G11B5/3143 ,  G11B5/40 ,  G11B5/455 ,  G11B33/14

Abstract: The present invention provides a thin film magnetic head that can efficiently dissipate the heat generated by the stationary sensing current, suppress heat diffusion, firing loss, decrease of output levels and deterioration of exchange anisotropic magnetic field as well as being excellent in linear responses and having suppressed Barkhausen noises, wherein the magnetic head comprises at least the magnetoresistive element layer deposited on the lower shield layer via lower gap layer, and the upper shield layer deposited on the electrode layer via the upper gap layer, at least one of the lower gap layer and upper gap layer comprising the highly heat-conductive insulation layer containing at least Al, N, X and O, wherein X is one or plural kinds of the element selected from Si, B, Ge and C.

Abstract translation: 本发明提供一种薄膜磁头，其能够有效地消散由静止感测电流产生的热量，抑制热扩散，烧损损失，输出电平的降低和交换各向异性磁场的劣化，并且具有优异的线性响应并具有 抑制巴克豪森噪声，其中磁头至少包括通过下间隙层沉积在下屏蔽层上的磁阻元件层，以及通过上间隙层沉积在电极层上的上屏蔽层，下间隙层中的至少一个 以及包含至少含有Al，N，X和O的高导热绝缘层的上间隙层，其中X是选自Si，B，Ge和C中的一种或多种元素。

公开(公告)号：US06456465B1

公开(公告)日：2002-09-24

申请号：US09436979

申请日：1999-11-09

Applicant: Ernest Anthony Louis ,  Ningjia Zhu ,  Peter Ispvan Bonyhard

Inventor： Ernest Anthony Louis ,  Ningjia Zhu ,  Peter Ispvan Bonyhard

IPC: G11B539

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3912 ,  G11B5/398 ,  G11B2005/3996

Abstract: A method and system for providing a magnetoresistive head that reads data from a recording media is disclosed. The method and system include providing a first shield, a second shield, a magnetoresistive sensor, and a lead. The first shield has a first end, a central portion and a second end. The first end is closer to the recording media during use than the second end. The second shield has a first end, a central portion, and a second end. The first end of the second shield is separated from the first end of the first shield by a read gap. The central portion of the second shield is separated from the central portion of the first shield by a distance that is greater than the read gap. The magnetoresistive sensor is disposed between the first shield and the second shield and has a front end and a back end. The front end of the magnetoresistive sensor is electrically coupled with the first end of the first shield or the first end of the second shield. The lead is electrically coupled with the back end of the magnetoresistive sensor. Thus, current is driven through the magnetoresistive sensor in a direction substantially perpendicular to the recording media during use.

Abstract translation: 公开了一种用于提供从记录介质读取数据的磁阻头的方法和系统。 该方法和系统包括提供第一屏蔽，第二屏蔽，磁阻传感器和引线。 第一屏蔽具有第一端，中心部分和第二端。 第一端在使用时比第二端更靠近记录介质。 第二屏蔽具有第一端，中心部分和第二端。 第二屏蔽的第一端与第一屏蔽的第一端分开一个读取的间隙。 第二屏蔽件的中心部分与第一屏蔽件的中心部分分开大于读取间隙的距离。 磁阻传感器设置在第一屏蔽和第二屏蔽之间，并且具有前端和后端。 磁阻传感器的前端与第一屏蔽的第一端或第二屏蔽的第一端电耦合。 引线与磁阻传感器的后端电耦合。 因此，在使用期间，电流在大致垂直于记录介质的方向上通过磁阻传感器驱动。

公开(公告)号：US06449132B1

公开(公告)日：2002-09-10

申请号：US09522517

申请日：2000-03-10

Applicant: Liu Yang ,  Jumna Ramdular ,  Sara L. Gordon ,  Ralph D. Knox ,  John E. Dzarnoski

Inventor： Liu Yang ,  Jumna Ramdular ,  Sara L. Gordon ,  Ralph D. Knox ,  John E. Dzarnoski

IPC: G11B539

CPC classification number: G11B5/3903 ,  G11B5/3109

Abstract: A silicon nitride dielectric film for use in an MR head according to the present invention comprises from about 38% to 44% by volume of Si, from about 35% to 37% by volume of N, and from about 21% to 24% by volume of H. The dielectric film is formed by plasma enhanced chemical vapor deposition (PECVD) at relatively low temperatures. A plurality of gases capable of reacting to form silicon nitride are introduced into a PECVD reactor. An electric field is generated in the reactor to produce a plasma. The gases in the reactor react in the presence of the electrical field to form a silicon nitride dielectric film.

Abstract translation: 根据本发明的用于MR磁头的氮化硅电介质膜包含约38％至44体积％的Si，约35％至37体积％的N和约21％至24％的 电介质膜通过等离子体增强化学气相沉积（PECVD）在较低温度下形成。 将能够反应形成氮化硅的多种气体引入PECVD反应器。 在反应器中产生电场以产生等离子体。 反应器中的气体在存在电场的情况下反应形成氮化硅电介质膜。

公开(公告)号：US06447689B1

公开(公告)日：2002-09-10

申请号：US09584424

申请日：2000-06-05

Applicant: Chyu-Jiuh Torng ,  Chen-Jung Chien ,  Kochan Ju ,  Jei-Wei Chang

Inventor： Chyu-Jiuh Torng ,  Chen-Jung Chien ,  Kochan Ju ,  Jei-Wei Chang

IPC: G11B539

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/3163 ,  G11B5/3903 ,  H01F41/308

Abstract: An improved process for manufacturing a spin valve structure that has buried leads is disclosed. A key feature is the inclusion in the process of a temporary protective layer over the seed layer on which the spin valve structure will be grown. This protective layer is in place at the time that photoresist (used to define the location of the spin valve relative to the buried leads and longitudinal bias layers) is removed. The protective layer is later removed as a natural byproduct of surface cleanup just prior to the formation of the spin valve itself.

Abstract translation: 公开了一种制造具有埋地引线的自旋阀结构的改进方法。 一个关键特征是在自旋阀结构将在其上生长的种子层上包含临时保护层的过程。 该保护层在光刻胶（用于限定自旋阀相对于埋入引线和纵向偏置层的位置）被去除时就位。 在形成自旋阀本身之前，保护层随后被除去，作为表面清洁的天然副产物。

公开(公告)号：US06445553B2

公开(公告)日：2002-09-03

申请号：US09285330

申请日：1999-04-02

Applicant: Ronald Barr ,  Robert E. Rottmayer

Inventor： Ronald Barr ,  Robert E. Rottmayer

IPC: G11B539

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

Abstract: A system and method for providing a device for reading data is disclosed. The device includes a magnetoresistive element. The method and system include providing a read gap, providing a plurality of leads, and providing an insulator. The read gap covers at least a portion of the magnetoresistive element. The plurality of leads is electrically coupled with the magnetoresistive element. The insulator electrically isolates a portion of each of the plurality of leads. In one aspect, the read gap is formed in a first process and the insulator is formed in a second process decoupled from the first process.

Abstract translation: 公开了一种用于提供读取数据的设备的系统和方法。 该装置包括磁阻元件。 该方法和系统包括提供读取间隙，提供多个引线以及提供绝缘体。 读取间隙覆盖磁阻元件的至少一部分。 多个引线与磁阻元件电耦合。 绝缘体电绝缘多个引线中的每一个的一部分。 在一个方面，读取间隙形成在第一工艺中，并且绝缘体形成在与第一工艺分离的第二工艺中。

公开(公告)号：US06433968B1

公开(公告)日：2002-08-13

申请号：US09564301

申请日：2000-05-02

Applicant: Zhupei Shi ,  Aiguo Feng

Inventor： Zhupei Shi ,  Aiguo Feng

IPC: G11B539

CPC classification number: G11B5/3967 ,  G11B5/3113 ,  G11B5/3143

Abstract: A merged thin film read/write head having a read element having a first shield layer, a second shield layer and a magnetoresistive element disposed between the first and second shield layers, a thin spacer layer of nonmagnetic material formed upon the second shield layer and an inductive write element having a first pole pedestal formed upon the spacer layer and a second pole separated from the pedestal by a gap. The pedestal includes a tapered portion for reducing the formation of pinned magnetic domains in the pedestal and providing improved flux passage. In combination with the thin nonmagnetic spacer layer, the tapered feature of the pedestal eliminates popcorn noise in the read element.

Abstract translation: 一种具有读取元件的合并薄膜读/写头，具有第一屏蔽层，第二屏蔽层和设置在第一屏蔽层和第二屏蔽层之间的磁阻元件，形成在第二屏蔽层上的非磁性材料的间隔层薄层和 电感写入元件具有形成在间隔层上的第一极基座和通过间隙与基座分离的第二极。 基座包括用于减小基座中的钉扎磁畴的形成的锥形部分，并且提供改善的通量通道。 与薄的非磁性间隔层结合，基座的锥形特征消除了读取元件中的爆米花噪声。

公开(公告)号：US06430011B1

公开(公告)日：2002-08-06

申请号：US09556055

申请日：2000-04-21

Applicant: Glen Adam Garfunkel ,  Wen Chien David Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

Inventor： Glen Adam Garfunkel ,  Wen Chien David Hsiao ,  Edward Hinpong Lee ,  Douglas Johnson Werner

IPC: G11B539

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3103 ,  G11B5/3109 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49044

Abstract: The present invention extends the high resistance lead layers of a read head straight back into the head from each of the first and second edges of the read sensor. This lessens the length of each of the high resistance lead layers so that they do not have to be made thicker to satisfy resistance requirements. Accordingly, a lateral width of each high resistance lead portion along the ABS and a thickness thereof are chosen so as to minimize the thickness while yet satisfying the resistance requirements. Further, a method of making the first and second lead layers is provided that minimizes the thickness of the high resistance lead layers. Instead of constructing the high resistance lead layers first, the present method constructs the high resistance lead layers last so that the high resistance lead layers are not altered by subsequent processing steps.

Abstract translation: 本发明将读头的高电阻引线层从读取传感器的第一和第二边缘的每一个直接延伸到头部。 这降低了每个高电阻引线层的长度，使得它们不必被制成更厚以满足电阻要求。 因此，选择沿着ABS的每个高电阻引线部分的横向宽度及其厚度，以便在满足电阻要求的同时使厚度最小化。 此外，提供了制造第一和第二引线层的方法，其使得高电阻引线层的厚度最小化。 首先，代替构造高电阻引线层，本方法构造最后的高电阻引线层，使得高电阻引线层不会随后的处理步骤而改变。