公开(公告)号：US06809901B2

公开(公告)日：2004-10-26

申请号：US10136973

申请日：2002-05-02

申请人： Michael K. Minor

发明人： Michael K. Minor

IPC分类号： G11B531

CPC分类号： G11B5/3113 ,  G11B5/1278 ,  G11B5/3153

摘要： A write pole for a magnetic recording head, such as a perpendicular magnetic recording head, includes a first layer of material adjacent a second layer of material. In one embodiment, the first layer of material has a saturation magnetic moment less than about 1.0 T and the second layer of material has a saturation magnetic moment greater than the saturation magnetic moment of the first layer of material. The first layer of material may include (NiFe)100−yXy, wherein X comprises Cr, Cu and/or Ti and wherein y is in the range of about 2 to about 50.

摘要翻译： 用于诸如垂直磁记录头的磁记录头的写极包括邻近第二材料层的第一材料层。 在一个实施例中，第一层材料具有小于约1.0T的饱和磁矩，并且第二材料层的饱和磁矩大于第一层材料的饱和磁矩。 第一层材料可以包括（NiFe）100-yXy，其中X包括Cr，Cu和/或Ti，并且其中y在约2-约50的范围内。

公开(公告)号：US06791796B2

公开(公告)日：2004-09-14

申请号：US10259133

申请日：2002-09-27

申请人： Alexander Mikhailovich Shukh ,  Vladyslav Alexandrovich Vaśko ,  Declan Macken

发明人： Alexander Mikhailovich Shukh ,  Vladyslav Alexandrovich Vaśko ,  Declan Macken

IPC分类号： G11B531

CPC分类号： G11B5/1278 ,  G11B5/3113 ,  G11B5/3153

摘要： The present invention is a perpendicular writer having an air-bearing surface, a main pole with an extension, and return pole, and a back gap closure intermediate the main pole extension and the return pole. The main pole includes a top magnetic layer and a soft magnetic underlayer separated by a nonmagnetic spacer. The main pole extension is in direct contact with the main pole and recessed from the air-bearing surface. The top magnetic layer forms a trailing edge of the main pole at the ABS and has a magnetic moment greater than that of the soft magnetic underlayer. Further, the top magnetic layer and the soft magnetic underlayer are antiferromagnetically coupled through the thin nonmagnetic spacer. The nonmagnetic spacer has predominantly 111-crystalline texture and promotes reduction of coercivity and grain size along with an increase of anistropy of the top magnetic layer material.

摘要翻译： 本发明是一种具有空气轴承表面的垂直刻录机，具有延伸部分的主极和返回极，以及在主极延伸部和返回极之间的后间隙。 主极包括由非磁性间隔物分离的顶部磁性层和软磁性底层。 主极延伸部分与主极直接接触并从空气轴承表面凹陷。 顶部磁性层在ABS处形成主极的后缘，其磁矩大于软磁性底层的磁矩。 此外，顶部磁性层和软磁性底层通过薄的非磁性间隔物反铁磁耦合。 非磁性间隔物主要具有111晶体结构，并且随着顶部磁性层材料的电阻率的增加，促进了矫顽力和晶粒尺寸的降低。

公开(公告)号：US06751055B1

公开(公告)日：2004-06-15

申请号：US10042674

申请日：2002-01-08

申请人： Arshad Alfoqaha ,  Mohamad T. Krounbi ,  Sandrawattie Sankar ,  David J. Seagle ,  Kenneth R. Young

发明人： Arshad Alfoqaha ,  Mohamad T. Krounbi ,  Sandrawattie Sankar ,  David J. Seagle ,  Kenneth R. Young

IPC分类号： G11B531

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/17 ,  G11B5/3103 ,  G11B5/3109 ,  G11B5/313 ,  G11B5/3133 ,  G11B5/3136 ,  G11B5/332 ,  G11B5/3909 ,  G11B5/3967 ,  G11B5/40 ,  G11B2005/3996

摘要： An inductive transducer has inorganic nonferromagnetic material disposed in an apex region adjacent to a submicron nonferromagnetic gap in a magnetic core. The inorganic nonferromagnetic material has a much lower coefficient of thermal expansion than that of hardbaked photoresist, reducing pole tip protrusion even if other insulation surrounding the coil sections within the core is made of hardbaked photoresist. Alternatively, the entire insulation surrounding the coil sections within the core, in addition to the apex region, can be formed of inorganic nonferromagnetic material, further reducing pole tip protrusion. The transducer has SiO2 rather than alumina in an undercoat layer joining the wafer substrate and the thin film layers of the transducer. SiO2 may also replace alumina in other areas, such as a piggyback layer joining the inductive transducer with a magnetoresistive transducer.

摘要翻译： 感应换能器具有无机非铁磁材料，其设置在与磁芯中的亚微米非铁磁间隙相邻的顶点区域中。 无机非铁磁材料的热膨胀系数比硬化的光致抗蚀剂要低得多，即使在芯体内的线圈部分周围的其它绝缘体也是由硬质的光致抗蚀剂制成的，也可以减小极尖突起。 或者，除了顶点区域之外围绕线圈部分的整个绝缘体可以由无机非铁磁材料形成，进一步减小极尖突起。 传感器在连接晶片衬底和换能器的薄膜层的底涂层中具有SiO 2而不是氧化铝。 SiO 2还可以在其它区域中替代氧化铝，例如将感应换能器与磁阻换能器接合的搭载背衬层。

公开(公告)号：US06741422B2

公开(公告)日：2004-05-25

申请号：US09884574

申请日：2001-06-18

申请人： Richard Hsiao ,  Hugo Alberto Emilio Santini

发明人： Richard Hsiao ,  Hugo Alberto Emilio Santini

IPC分类号： G11B531

CPC分类号： G11B5/3163 ,  G11B5/012 ,  G11B5/17 ,  G11B5/3116 ,  G11B5/313 ,  Y10T29/49046

摘要： Following the deposition of an insulation layer, a patterned P2 pole tip seed layer is deposited. Significantly, the pole tip seed layer is not deposited beneath the induction coil area of the magnetic head. A dielectric layer is next deposited and a patterned RIE etching mask that includes both a P2 pole tip trench opening and an induction coil trench opening is fabricated upon the dielectric layer. Thereafter, in a single RIE etching step, the P2 pole tip trench is etched through the dielectric material down to the seed layer, and the induction coil trench is etched through the dielectric material down to the insulation layer. The P2 pole tip is first electroplated up into its trench, an induction coil seed layer is next deposited, and the induction coil is then electroplated up into the induction coil trench.

摘要翻译： 在沉积绝缘层之后，沉积图案化的P2极端子种子层。 重要的是，极尖种子层没有沉积在磁头的感应线圈区域之下。 接下来沉积电介质层，并且在电介质层上制造包括P2极尖沟槽开口和感应线圈沟槽开口的图案化RIE蚀刻掩模。 此后，在单个RIE蚀刻步骤中，通过电介质材料将P2极尖沟槽蚀刻到种子层，并且感应线圈沟槽通过电介质材料被蚀刻到绝缘层。 首先将P2极端电镀到其沟槽中，然后沉积感应线圈种子层，然后将感应线圈电镀到感应线圈沟槽中。

公开(公告)号：US06731459B2

公开(公告)日：2004-05-04

申请号：US09845357

申请日：2001-05-01

申请人： Akifumi Kamijima

发明人： Akifumi Kamijima

IPC分类号： G11B531

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996

摘要： There is provided a thin film magnetic head which can improve electromagnetic conversion characteristics and a method of manufacturing the same. A recording gap layer is formed on a lower magnetic pole layer. A stepped portion of a nonmagnetic material having an almost vertically formed end face at a side facing an ABS surface is formed on the recording gap layer. A space portion is formed at the end face. An upper magnetic pole layer magnetically connected to the lower magnetic pole layer to constitute a closed magnetic path is formed on the recording gap layer, the space portion, and the stepped portion. A thin film coil is formed between the upper and lower magnetic pole layers through an insulating layer. A side of the upper magnetic pole layer facing the space portion includes an inclined surface connecting the surface of the recording gap layer and the stepped portion.

摘要翻译： 提供了可以提高电磁转换特性的薄膜磁头及其制造方法。 记录间隙层形成在下磁极层上。 在记录间隙层上形成有在面向ABS表面的一侧具有几乎垂直形成的端面的非磁性材料的台阶部分。 在端面形成有空间部。 在记录间隙层，空间部分和阶梯部分上形成有磁性地连接到下磁极层以构成闭合​​磁路的上磁极层。 通过绝缘层在上下磁极层之间形成薄膜线圈。 面向空间部分的上磁极层的一侧包括连接记录间隙层的表面和台阶部分的倾斜表面。

公开(公告)号：US06661606B2

公开(公告)日：2003-12-09

申请号：US10307439

申请日：2002-12-02

申请人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

发明人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

IPC分类号： G11B531

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/3163 ,  G11B5/3967 ,  G11B2005/3996 ,  H01F41/26

摘要： A magnetic disk apparatus includes a magnetic disk for recording information and a magnetic head which has a reproducing head and a recording head. The reproducing head comprising a lower shield film, a magnetoresistive film, a pair of electrodes and an upper shield, and the recording head comprising an upper magnetic core, a lower magnetic core, and a coil disposed between said upper magnetic core and said lower magnetic core. The upper magnetic core and the lower magnetic core include an electroplated thin film with an average crystal grain size smaller than 500 Å, and the electroplated thin film is made of Ni—Fe alloy of which Ni is 38 to 60 wt % and Fe is 40 to 62 wt %.

摘要翻译： 磁盘装置包括用于记录信息的磁盘和具有再现头和记录头的磁头。 该再现头包括下屏蔽膜，磁阻膜，一对电极和上屏蔽，并且记录头包括上磁芯，下磁芯和设置在所述上​​磁芯和所述下磁芯之间的线圈 核心。 上磁芯和下磁芯包括平均晶粒尺寸小于500的电镀薄膜，电镀薄膜由Ni为38〜60重量％，Fe为40的Ni-Fe合金构成 至62重量％。

公开(公告)号：US06586069B2

公开(公告)日：2003-07-01

申请号：US09835120

申请日：2001-04-13

申请人： John W. Dykes ,  Joel W. Hoehn ,  James E. Angelo ,  William D. Mosley

发明人： John W. Dykes ,  Joel W. Hoehn ,  James E. Angelo ,  William D. Mosley

IPC分类号： G11B531

CPC分类号： B82Y10/00 ,  B82Y30/00 ,  C23C14/022 ,  C23C14/0605 ,  G11B5/3106 ,  G11B5/40 ,  G11B5/484 ,  G11B5/72 ,  G11B5/74 ,  G11B5/8408 ,  G11B11/10584 ,  G11B11/10586 ,  Y10S428/90 ,  Y10S977/847 ,  Y10S977/896

摘要： An improved magnetic medium has a metal or semiconductor surface in which the surface of the magnetic medium has an approximate monolayer of fullerene molecules bonded to the metal or semiconductor surface. The bond strength between the fullerene molecules and the surface is stronger than the fullerene-fullerene intermolecular bond strength. The magnetic media can be used in the production of components for data storage system, in particular heads with magnetic transducers and magnetic or optical-magnetic discs. In methods for forming the fullerene coatings, an approximate monolayer of fullerene molecules are deposited on a metal or semiconductor surface substantially free of contaminants.

摘要翻译： 改进的磁介质具有金属或半导体表面，其中磁介质的表面具有键合到金属或半导体表面的富勒烯分子的近似单层。 富勒烯分子与表面之间的键合强度比富勒烯 - 富勒烯分子间键强度强。 磁性介质可用于生产用于数据存储系统的组件，特别是具有磁性换能器和磁性或光磁盘的磁头。 在形成富勒烯涂层的方法中，近似单层的富勒烯分子沉积在基本上不含污染物的金属或半导体表面上。

公开(公告)号：US06445550B1

公开(公告)日：2002-09-03

申请号：US09438059

申请日：1999-11-10

申请人： Tsutomu Ishi

发明人： Tsutomu Ishi

IPC分类号： G11B531

CPC分类号： B82Y10/00 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3166 ,  G11B5/3967 ,  Y10T29/49046

摘要： In a magnetoresistive/inductive composite head including: a magnetoresistive head which comprises a magnetoresistive element for sensing magnetic field occurring above a magnetic recording medium and an electrode portion for supplying sense current to the magnetoresistive element, the magnetoresistive element and the electrode portion being disposed between a pair of first and second magnetic shields disposed so as to confront each other through magnetic gaps; and an inductive head which comprises a first magnetic pole using the second magnetic shield as a magnetic pole, a second magnetic pole disposed at the opposite side to the magnetoresistive element with respect to the second magnetic shield and a coil for exciting the first magnetic pole and the second magnetic pole, wherein the writing of information is performed on the magnetic recording medium by magnetic field occurring from a writing magnetic gap provided between the first magnetic pole and the second magnetic pole; and a recess potion for defining the width of each of the first magnetic pole and the second magnetic pole, the recess portion being formed on the surface of the second magnetic shield which confronts the magnetic recording medium, wherein the end potion of the recess portion and the end portion of the electrode portion are in a predetermined positional relationship with each other.

摘要翻译： 在磁阻/电感复合头中，包括：磁阻头，其包括用于感测磁记录介质上方产生的磁场的磁阻元件和用于向磁阻元件提供感测电流的电极部分，磁阻元件和电极部分位于 一对第一和第二磁屏蔽，其被设置为通过磁隙相互面对; 以及感应头，其包括使用第二磁屏蔽作为磁极的第一磁极，相对于第二磁屏蔽设置在与磁阻元件相反的一侧的第二磁极和用于激励第一磁极的线圈，以及 第二磁极，其中通过从设置在第一磁极和第二磁极之间的写入磁隙发生的磁场在磁记录介质上执行信息写入; 以及用于限定第一磁极和第二磁极中的每一个的宽度的凹陷部分，凹部形成在面对磁记录介质的第二磁屏蔽的表面上，其中凹部的端部和 电极部分的端部彼此处于预定的位置关系。

公开(公告)号：US06430003B1

公开(公告)日：2002-08-06

申请号：US10023814

申请日：2001-12-21

申请人： Yoshitaka Sasaki

发明人： Yoshitaka Sasaki

IPC分类号： G11B531

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  Y10T29/49044 ,  Y10T29/49046

摘要： A thin-film magnetic head and a method of manufacturing the same in which a precise control of a pole width can be performed and a sufficient overwrite characteristic can be obtained. The thin-film magnetic head has a first insulating and second insulating layer, and first and second magnetic layers that include two magnetic poles are magnetically coupled. The first magnetic layer has a magnetic pole tip which has a uniform width portion, while a magnetic pole coupler is located in a back gap area in contact with the second magnetic layer and a yoke which magnetically couples the magnetic pole tip with the magnetic pole coupler. A recording-medium-side edge of the second insulating layer defines a reference position to an air-bearing surface, and a surface of the magnetic pole tip and edge surfaces of the third insulating layer are planarized in one plane.

公开(公告)号：US06404601B1

公开(公告)日：2002-06-11

申请号：US09490518

申请日：2000-01-25

申请人： Robert E. Rottmayer ,  Jian-Gang Zhu ,  Kyusik Sin ,  Ronald A. Barr

发明人： Robert E. Rottmayer ,  Jian-Gang Zhu ,  Kyusik Sin ,  Ronald A. Barr

IPC分类号： G11B531

CPC分类号： G11B5/3967 ,  G11B5/312 ,  G11B5/3143 ,  G11B5/3912 ,  G11B5/398

摘要： A magnetic head has an exchange isolated poletip located between a shield of an MR sensor and a write pole of an inductive sensor. The poletip is preferably made of high Bs material, allowing the flux that travels through the much larger pole layer to funnel through the poletip without saturation. The poletip is isolated from the shield layer in order to decouple the shield layer from unfavorable domain patterns that may occur in the poletip, which in turn reduces noise in the sensor, while the shield layer serves to complete the inductive circuit. Despite having a poletip isolated by nonmagnetic material, heads built according to this invention have demonstrated high overwrite as well as remarkably low noise.

摘要翻译： 磁头具有位于MR传感器的屏蔽和感应传感器的写极之间的交换隔离的poletip。 poletip优选由高Bs材料制成，允许穿过更大极点的焊剂漏斗穿过poletip而不饱和。 poletip与屏蔽层隔离，以便将屏蔽层与可能在poletip中发生的不利的域图案分离，从而降低传感器的噪声，同时屏蔽层用于完成感应电路。 尽管具有由非磁性材料隔离的poletip，但是根据本发明构建的头部已经表现出高覆盖以及非常低的噪声。