公开(公告)号：US06826012B1

公开(公告)日：2004-11-30

申请号：US09592297

申请日：2000-06-12

Applicant: Yoshitaka Sasaki

Inventor： Yoshitaka Sasaki

IPC: G11B5147

CPC classification number: G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3967

Abstract: A recording head has a bottom pole layer and a top pole layer that include pole portions, and a recording gap layer placed between the pole portions. The recording head further has a thin-film coil placed between the bottom and top pole layers, the coil being insulated from the pole layers. The bottom pole layer includes a first portion and a second portion. The first portion is located in a region facing toward the thin-film coil, an insulating layer being placed between the bottom pole layer and the coil. The second portion is connected to a surface of the first portion facing toward the thin-film coil. The second portion forms the pole portion and defines a throat height. The thin-film coil is located on a side of the second portion. Throat height TH is greater than MR height MR-H.

Abstract translation: 记录头具有包括极部的底极层和顶极层，以及设置在极部之间的记录间隙层。 记录头还具有设置在底极和顶极层之间的薄膜线圈，线圈与极层绝缘。 底极层包括第一部分和第二部分。 第一部分位于面向薄膜线圈的区域中，绝缘层位于底极层和线圈之间。 第二部分连接到面向薄膜线圈的第一部分的表面。 第二部分形成极部并限定喉部高度。 薄膜线圈位于第二部分的一侧。 喉部高度TH大于MR高度MR-H。

公开(公告)号：US06819531B2

公开(公告)日：2004-11-16

申请号：US10115917

申请日：2002-04-05

Applicant: Yoshihiro Shiroishi

Inventor： Yoshihiro Shiroishi

IPC: G11B5147

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/09 ,  G11B5/313 ,  G11B5/3909 ,  G11B5/3967 ,  G11B5/484 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/3996

Abstract: A magnetic recording and reading device having a transfer rate of not less than 50 MB/s includes a magnetic recording medium having an absolute value of normalized noise coefficient per recording density of not more than 2.5×10−8 (&mgr;Vrms)(inch)(&mgr;m)0.5/(&mgr;Vpp), and magnetic head which is mounted on an integrated circuit suspension so that a total inductance is reduced to be not more than 65 nH and having a magnetic core which is not more than 35 &mgr;m of length, wherein a part of the magnetic core being formed by a magnetic film having a resistivity exceeding at least 50 &mgr;&OHgr;cm or by a multilayer film consisting of a magnetic film and an insulating film. The device also includes a fast R/W-IC having a line width of not more than 0.35 &mgr;m which is installed in a position within 2 cm from a rear end of the magnetic head.

Abstract translation: 具有不小于50MB / s的传送速率的磁记录和读取装置包括具有不超过2.5×10 -8（μVrms）（inch）的记录密度的归一化噪声系数绝对值的磁记录介质， （mum）<0.5> /（muVpp）和安装在集成电路悬架上的磁头，使得总电感减小到不大于65nH，并且具有不超过35mum长度的磁芯 其中，所述磁芯的一部分由电阻率超过50μΩ的磁性膜或由磁性膜和绝缘膜构成的多层膜形成。 该装置还包括具有不大于0.35μm的线宽的快速R / W-IC，其安装在距离磁头的后端2cm的位置。

公开(公告)号：US06809902B2

公开(公告)日：2004-10-26

申请号：US10348567

申请日：2003-01-21

Applicant: Yukinori Ikegawa

Inventor： Yukinori Ikegawa

IPC: G11B5147

CPC classification number: G11B5/313 ,  G11B5/232 ,  G11B5/3116 ,  G11B5/3133 ,  G11B5/3163

Abstract: The thin film magnetic head has stable recording characteristics. The thin film magnetic head of the present invention comprises: lower and upper magnetic poles; an insulating layer formed between the magnetic poles, the insulating layer having a apex part; a coil formed in the insulating layer; and a gap layer formed between the magnetic poles faced each other. The coil is provided in a concave part of the lower magnetic pole. The concave part is filled with a first insulating layer. A high magnetic permeability layer is formed on the lower magnetic pole which faces the upper magnetic pole. The gap layer is formed on the high magnetic permeability layer. A second insulating layer is formed on the first insulating layer. A third insulating layer is formed on the second insulating layer and has the apex part.

Abstract translation: 薄膜磁头具有稳定的记录特性。 本发明的薄膜磁头包括：下磁极和上磁极; 形成在所述磁极之间的绝缘层，所述绝缘层具有顶点部分; 形成在所述绝缘层中的线圈; 以及形成在彼此相对的磁极之间的间隙层。 线圈设置在下磁极的凹部中。 凹部填充有第一绝缘层。 在面向上磁极的下磁极上形成高磁导率层。 间隙层形成在高磁导率层上。 在第一绝缘层上形成第二绝缘层。 第三绝缘层形成在第二绝缘层上并具有顶点部分。

公开(公告)号：US06791793B1

公开(公告)日：2004-09-14

申请号：US09952989

申请日：2001-09-14

Applicant: Yingjian Chen ,  Xiaozhong Dang ,  Francis H. Liu ,  Kroum Stoev ,  Hai Jiang ,  Yugang Wang ,  Xizeng Shi

Inventor： Yingjian Chen ,  Xiaozhong Dang ,  Francis H. Liu ,  Kroum Stoev ,  Hai Jiang ,  Yugang Wang ,  Xizeng Shi

IPC: G11B5147

CPC classification number: G11B5/1278 ,  G11B5/3109 ,  Y10T29/49034 ,  Y10T29/49044

Abstract: A read/write head and method of making the same, are used in a data storage system, such as a disk drive, for perpendicular magnetic recording of data. The head employs a two-layer pole design with a main pole made of sputtered high moment magnetic material, and an adjunct pole made of electroplated soft magnetic film. The adjunct pole is substantially recessed from the air bearing surface. The present head design significantly enhances the magnetic write field, and substantially reduces side-writing that result in accidental erasure of data in adjacent tracks on the magnetic recording medium.

Abstract translation: 读/写头及其制造方法用于数据存储系统，例如磁盘驱动器，用于数据的垂直磁记录。 头部采用双层极设计，其主极由溅射高磁矩材料制成，电极由电镀软磁膜制成。 附加杆基本上从空气轴承表面凹入。 本头设计显着增强了磁写入场，并且基本上减少了导致磁记录介质上的相邻轨道中的数据的意外擦除的侧写。

公开(公告)号：US06788496B2

公开(公告)日：2004-09-07

申请号：US09934816

申请日：2001-08-22

Applicant: Charles H. Tolman ,  Nurul Amin

Inventor： Charles H. Tolman ,  Nurul Amin

IPC: G11B5147

CPC classification number: G11B5/3163 ,  G11B5/3116

Abstract: In a method of manufacturing a top pole of a write element for use in a disc drive storage system, a first trench is formed on a top surface of a bottom pole, the first trench includes a first opening defined by opposing first side walls and an exposed portion of the top surface located therebetween. Next, a second trench is formed within the first trench. The second trench includes a second opening defined by opposing second side walls formed adjacent the first side walls and a gap member formed on the exposed portion of the top surface of the bottom pole between the second side walls. Finally, a top pole is formed in the second opening, which is narrower than the first opening.

Abstract translation: 在制造用于盘驱动存储系统的写元件的顶极的方法中，第一沟槽形成在底极的顶表面上，第一沟槽包括由相对的第一侧壁限定的第一开口和 顶表面的暴露部分位于它们之间。 接下来，在第一沟槽内形成第二沟槽。 第二沟槽包括由邻近第一侧壁形成的相对的第二侧壁限定的第二开口和形成在第二侧壁之间的底极顶表面的暴露部分上的间隙构件。 最后，在比第一开口窄的第二开口中形成顶极。

公开(公告)号：US06778357B2

公开(公告)日：2004-08-17

申请号：US10084729

申请日：2001-10-24

Applicant: Ibro Tabakovic ,  Paul A. Jallen ,  John Rice ,  Steve C. Riemer ,  Venkateswara R. Inturi ,  Lyle P. Cox ,  Hong Wang ,  Robbee L. Grimm ,  Erik Hutchinson ,  Charles Ericson

Inventor： Ibro Tabakovic ,  Paul A. Jallen ,  John Rice ,  Steve C. Riemer ,  Venkateswara R. Inturi ,  Lyle P. Cox ,  Hong Wang ,  Robbee L. Grimm ,  Erik Hutchinson ,  Charles Ericson

IPC: G11B5147

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3109 ,  G11B5/3146 ,  G11B5/3153 ,  G11B5/3967 ,  G11B2005/3996

Abstract: A magnetic head for use in magnetic data storage systems is provided. The magnetic head includes a substantially non-magnetic writer gap layer and pair of magnetic poles separated by the writer gap layer. A first of the poles includes a first layer formed of a CoNiFe alloy that has a saturation magnetic moment greater than 2.1 Tesla. Methods of fabricating such a head are also disclosed.

Abstract translation: 提供了用于磁数据存储系统的磁头。 磁头包括基本上非磁性的写入器间隙层和由写入器间隙层分离的一对磁极。 第一极包括由具有大于2.1特斯拉的饱和磁矩的CoNiFe合金形成的第一层。 还公开了制造这种头部的方法。

公开(公告)号：US06760966B2

公开(公告)日：2004-07-13

申请号：US10135097

申请日：2002-04-30

Applicant: Po Kang Wang ,  Moris Dovek ,  Jibin Geng ,  Tai Min

Inventor： Po Kang Wang ,  Moris Dovek ,  Jibin Geng ,  Tai Min

IPC: G11B5147

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  B82Y40/00 ,  C21D1/04 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  H01F10/3268 ,  H01F41/302 ,  Y10T29/49032 ,  Y10T29/49034 ,  Y10T29/49043 ,  Y10T29/49044

Abstract: As track density requirements for disk drives have grown more aggressive, GMR devices have been pushed to narrower track widths to match the track pitch of the drive width. Narrower track widths degrade stability, cause amplitude loss, due to the field originating from the hard bias structure, and side reading. This problem has been overcome in a process of manufacturing a device by adding an additional layer of soft magnetic material above the hard bias layers. The added layer provides flux closure to the hard bias layers thereby preventing flux leakage into the gap region. A non-magnetic layer must be included to prevent exchange coupling to the hard bias layers. In at least one embodiment the conductive leads are used to accomplish this.

Abstract translation: 随着磁盘驱动器的磁道密度要求越来越高，GMR器件已被推到更窄的磁道宽度以匹配驱动器宽度的磁道间距。 较窄的轨道宽度会降低稳定性，导致振幅损失，这是由于源自硬偏置结构的场和侧读。 在通过在硬偏压层上方添加附加的软磁性材料层来制造器件的过程已经克服了这个问题。 添加的层向硬偏置层提供磁通闭合，从而防止磁通量泄漏到间隙区域中。 必须包括非磁性层以防止与硬偏置层的交换耦合。 在至少一个实施例中，导电引线用于实现这一点。

公开(公告)号：US06738222B2

公开(公告)日：2004-05-18

申请号：US09985601

申请日：2001-11-05

Applicant: Yoshikazu Sato ,  Tetsuya Roppongi

Inventor： Yoshikazu Sato ,  Tetsuya Roppongi

IPC: G11B5147

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/3163 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996

Abstract: A thin-film magnetic head comprises first and second magnetic layers, a gap layer provided between the first and second magnetic layers, and a thin-film coil at least a part of which is disposed between the first and second magnetic layers. The second magnetic layer has a pole portion layer, a yoke portion layer, and a coupling portion. The head further comprises a non-magnetic layer provided on a surface of the pole portion layer farther from the gap layer. The yoke portion layer interfaces with the rear end surface of the pole portion layer, and is greater than the pole portion layer in thickness in a cross section containing the interface.

Abstract translation: 薄膜磁头包括第一和第二磁性层，设置在第一和第二磁性层之间的间隙层，以及薄膜线圈，其至少一部分设置在第一和第二磁性层之间。 第二磁性层具有磁极部分层，磁轭部分层和耦合部分。 头部还包括设置在距离间隙层更远的极部分层的表面上的非磁性层。 磁轭部分层与磁极部分层的后端表面相接触，并且在包含界面的横截面中大于磁极部分的厚度。

公开(公告)号：US06687082B1

公开(公告)日：2004-02-03

申请号：US09676788

申请日：2000-10-02

Applicant: Nobuyuki Ishiwata ,  Tsutomu Ishi ,  Mikiko Saito ,  Hiroaki Honjo ,  Shinsaku Saito ,  Tamaki Toba ,  Yoshihiro Nonaka

Inventor： Nobuyuki Ishiwata ,  Tsutomu Ishi ,  Mikiko Saito ,  Hiroaki Honjo ,  Shinsaku Saito ,  Tamaki Toba ,  Yoshihiro Nonaka

IPC: G11B5147

CPC classification number: G11B5/3153 ,  G11B5/3163 ,  Y10T29/49044

Abstract: A magnetic head and a manufacturing method of the magnetic head and a magnetic recording and reproducing apparatus used this head, in which the following problem is solved, are provided. A plated film realizing large saturation magnetization Bs about 2T can not realize a high resistivity at the same time, therefore, when this plated film is applied to a magnetic head, the high frequency characteristic is deteriorated. This problem is solved at the present invention. Further, the present invention provides a magnetic head that is low cost and has large saturation magnetization Bs, and has a excellent high frequency characteristic suitable for a high density recording. A magnetic head, in which a coil insulated by insulation layers is disposed between a first magnetic core for recording and a second magnetic core for recording that is disposed to face the first magnetic core for recording via a recording gap, and which executes recording by that a magnetic flux of the first and second magnetic cores for recording excited by the coil is generated from the recording gap, is provided. And at least one of the first and second magnetic cores for recording is composed of a first plated magnetic layer and a second plated magnetic layer in a state that the first plated magnetic layer is disposed at the near side of the recording gap, and saturation magnetization of the first plated magnetic layer is 1.7 T (tesla) or more. And when resistivity of the first plated magnetic layer is defined as &rgr;1 and the thickness of the first plated magnetic layer is defined as &dgr;1, and resistivity of the second plated magnetic layer is defined as &rgr;2, and the thickness of the second plated magnetic layer is defined as &dgr;2, &rgr;1

Abstract translation: 提供了磁头和磁头的制造方法以及使用该磁头的磁记录和再现装置，其中解决了以下问题。 实现大约2T的饱和磁化强度Bs的电镀膜不能同时实现高电阻率，因此当将该镀膜施加到磁头时，高频特性劣化。 在本发明中解决了这个问题。 此外，本发明提供一种低成本，饱和磁化强度高的磁头，并且具有优良的高密度记录特性。 一种磁头，其中通过绝缘层绝缘的线圈被设置在用于记录的第一磁芯和用于记录的第二磁芯之间，用于记录的第二磁芯经由记录间隙设置成面对第一磁芯进行记录，并且执行记录 提供了从记录间隙产生由线圈激发的记录的第一和第二磁芯的磁通量。 并且，第一和第二记录用磁芯中的至少一个由第一镀层磁性层和第二镀覆磁性层构成，第一镀层磁性层设置在记录间隙的近侧，饱和磁化强度 的第一镀层磁性层为1.7T（特斯拉）或更高。 并且，将第一镀层磁性层的电阻率定义为rho1，将第一镀覆磁性层的厚度定义为δ1，将第二镀覆磁性层的电阻率定义为rho2，将第二镀覆磁性层的厚度设为 定义为δ2，rho1

公开(公告)号：US06618223B1

公开(公告)日：2003-09-09

申请号：US09617791

申请日：2000-07-18

Applicant: Yingjian Chen ,  Hua-Ching Tong ,  Lei Wang ,  Xizeng Shi

Inventor： Yingjian Chen ,  Hua-Ching Tong ,  Lei Wang ,  Xizeng Shi

IPC: G11B5147

CPC classification number: G11B5/3146 ,  G11B5/3109 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3153 ,  G11B5/3967 ,  Y10T29/49032 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49048 ,  Y10T29/49052 ,  Y10T29/49071 ,  Y10T29/49073

Abstract: An inductive write element is disclosed for use in a magnetic data recording system. The write element provides increased data rate and data density capabilities through improved magnetic flux flow through the element. The write element includes a magnetic yoke constructed of first and second magnetic poles. The first pole includes a pedestal constructed of a high magnetic moment (high Bsat) material, which is preferably FeRhN nanocrystalline films with lamination layers of CoZrCr. The second pole includes a thin inner layer of high Bsat material (also preferably FeRhN nanocrystalline films with lamination layers of CoZrCr), the remainder being constructed of a magnetic material capable of being electroplated, such as a Ni—Fe alloy. An electrically conductive coil passes through the yoke between the first and second poles to induce a magnetic flux in the yoke when an electrical current is caused to flow through the coil. Magnetic flux in the yoke produces a fringing field at a write gap whereby a signal can be imparted onto a magnetic medium passing thereby.

Abstract translation: 公开了用于磁数据记录系统的感应写入元件。 写元件通过改善通过元件的磁通量提供增加的数据速率和数据密度能力。 写元件包括由第一和第二磁极构成的磁轭。 第一极包括由高磁矩（高Bsat）材料构成的基座，其优选为具有CoZrCr层压层的FeRhN纳米晶体膜。 第二极包括具有高Bsat材料的薄内层（还优选具有CoZrCr层压层的FeRhN纳米晶膜），其余部分由能够电镀的磁性材料如Ni-Fe合金构成。 导电线圈通过第一和第二极之间的磁轭，当电流流过线圈时，引起磁轭中的磁通量。 轭中的磁通在写入间隙产生边缘场，由此可以将信号传递到通过的磁介质上。