公开(公告)号：US5388019A

公开(公告)日：1995-02-07

申请号：US163670

申请日：1993-12-07

Applicant: Bernell E. Argyle ,  Thomas C. Arnoldussen ,  Thomas J. Beaulieu ,  Dean A. Herman, Jr. ,  Sol Krongelb ,  Hin P. E. Lee ,  Daniel A. Nepela ,  Bojan Petek ,  Lubomyr T. Romankiw ,  John C. Slonczewski

Inventor： Bernell E. Argyle ,  Thomas C. Arnoldussen ,  Thomas J. Beaulieu ,  Dean A. Herman, Jr. ,  Sol Krongelb ,  Hin P. E. Lee ,  Daniel A. Nepela ,  Bojan Petek ,  Lubomyr T. Romankiw ,  John C. Slonczewski

IPC: G11B5/31 ,  H01F10/32 ,  H01F41/34 ,  G11B5/147

CPC classification number: B82Y25/00 ,  H01F10/3268 ,  H01F41/34 ,  Y10T29/49032 ,  Y10T29/49034

Abstract: Magnetic thin film structures are disclosed including a laminate of a layer of nonmagnetic material sandwiched between first and second layers of magnetic material and at least one edge closure layer of magnetic material disposed on a side edge of the laminate with the edge closure layer being in magnetic contact with the first and second layers of magnetic material. The edge closure layer eliminates magnetic edge closure domains and magnetic edge-curling walls in the yoke and poletip regions, or in a fluxguide of a magnetic recording head to substantially eliminate Barkhausen noise and wall network instabilities. Multiple layer laminates are also disclosed having a plurality of nonmagnetic layers each of which are sandwiched between layers of magnetic material and wherein the laminate includes edge closure layers that contact all the magnetic layers. Several methods are disclosed for fabricating the laminate. In one class of technique, the side edges are deposited together with a top layer in a single plating operation. In an another embodiment, the side edge closure layers are separately plated. Another embodiment provides for a layer of antiferromagnetic material deposited between the nonmagnetic layer and one of the magnetic layers to provide additional anisotropy.

Abstract translation: 公开了磁性薄膜结构，其包括夹在第一和第二磁性材料层之间的非磁性材料层的叠层，以及设置在层压板的侧边缘上的至少一个磁性材料的边缘封闭层，边缘封闭层处于磁性 与第一和第二层磁性材料接触。 边缘封闭层消除磁轭和poletip区域中的磁边缘封闭域和磁性边缘卷曲壁，或者在磁记录头的磁通导向器中消除巴克豪森噪声和墙网络不稳定性。 还公开了多层层压板，其具有多个非磁性层，每个非磁性层都夹在磁性材料层之间，并且其中层压板包括接触所有磁性层的边缘封闭层。 公开了制造层压板的几种方法。 在一类技术中，在单个电镀操作中，侧边缘与顶层一起沉积在一起。 在另一个实施例中，侧边缘封闭层被单独地电镀。 另一个实施例提供沉积在非磁性层和一个磁性层之间的反铁磁材料层，以提供额外的各向异性。

公开(公告)号：US5171992A

公开(公告)日：1992-12-15

申请号：US770505

申请日：1991-10-03

Applicant: Joachim G. Clabes ,  Michael Hatzakis ,  Kam L. Lee ,  Bojan Petek ,  John C. Slonczewski

Inventor： Joachim G. Clabes ,  Michael Hatzakis ,  Kam L. Lee ,  Bojan Petek ,  John C. Slonczewski

IPC: B81B1/00 ,  G01Q60/54 ,  G01Q70/12 ,  G01Q70/14 ,  G01R1/07

CPC classification number: G01Q60/54 ,  B82Y15/00 ,  B82Y35/00 ,  G01Q70/12 ,  G01R1/07 ,  Y10S977/878 ,  Y10S977/879

Abstract: Methods are described for producing a needle probe tip having prescribed magnetic properties for a scanning magnetic force microscope (MFM) on a substrate positioned in an evacuated environment. A substantially rigid, nanometer-scale needle-like structure is produced by selective decomposition of a volatile organic compound by a highly focussed electron beam. Processing steps are described to obtain prescribed magnetic properties of such a needle probe structure; in particular, the fabrication of a single magnetic domain, with hard or soft magnetic properties at the distal end of the needle structure. Three dimensional probe tips are also achieved. These magnetic sensing probes allow magnetic imaging at the nanometer-scale level.

Abstract translation: 描述了用于在位于抽空环境中的基板上制造用于扫描磁力显微镜（MFM）的具有规定磁特性的针探针头的方法。 通过高度聚焦的电子束选择性分解挥发性有机化合物来制备基本上刚性的纳米尺度的针状结构。 描述处理步骤以获得这种针探针结构的规定的磁性; 特别地，在针结构的远端处制造具有硬或软磁性的单个磁畴。 也实现了三维探针尖端。 这些磁传感探针允许纳米级的磁性成像。

公开(公告)号：US5582927A

公开(公告)日：1996-12-10

申请号：US349475

申请日：1994-12-05

Applicant: Panayotis C. Andricacos ,  Jei-Wei Chang ,  Wilma J. Horkans ,  Judith D. Olsen ,  Bojan Petek ,  Lubomyr T. Romankiw

Inventor： Panayotis C. Andricacos ,  Jei-Wei Chang ,  Wilma J. Horkans ,  Judith D. Olsen ,  Bojan Petek ,  Lubomyr T. Romankiw

IPC: C23C14/14 ,  G11B5/31 ,  H01F10/16 ,  H01F10/30 ,  H01F10/32 ,  H01F41/26 ,  H05K9/00 ,  G11B5/66 ,  C25D5/18

CPC classification number: H01F41/26 ,  B82Y25/00 ,  G11B5/31 ,  H01F10/16 ,  H01F10/30 ,  H01F10/324 ,  H05K9/0075 ,  Y10S428/90 ,  Y10T428/115 ,  Y10T428/12771 ,  Y10T428/12778 ,  Y10T428/12903 ,  Y10T428/1291 ,  Y10T428/12917

Abstract: Certain alloys of CoFeCu are provided in film and laminate form which have a unique combination of electromagnetic properties which enable them to be used as magnetic thin films in magnetic recording heads, shields and flux guides. The films and laminates thereof are electrodeposited from a plating bath in a DC or pulsed current electrodeposition process.

Abstract translation: CoFeCu的某些合金以膜和层压形式提供，其具有电磁特性的独特组合，使得它们能够用作磁记录头，屏蔽件和助焊剂引导件中的磁性薄膜。 其膜和层压体在直流或脉冲电流电沉积工艺中从镀浴电沉积。

公开(公告)号：US5132859A

公开(公告)日：1992-07-21

申请号：US571944

申请日：1990-08-23

Applicant: Panayotis C. Andricacos ,  Jei-Wei Chang ,  Bojan Petek ,  Lubomyr T. Romankiw

Inventor： Panayotis C. Andricacos ,  Jei-Wei Chang ,  Bojan Petek ,  Lubomyr T. Romankiw

IPC: G11B5/127 ,  G11B5/187 ,  G11B5/31 ,  G11B5/39 ,  H01F10/32

CPC classification number: B82Y25/00 ,  G11B5/3113 ,  G11B5/3153 ,  H01F10/32 ,  H01F10/3281 ,  G11B5/3903 ,  G11B5/3919 ,  Y10S428/928

Abstract: A magnetic thin film structure comprising a first layer of magnetic material having a low anisotropy H.sub.k magnetically coupled to a second layer magnetic material having a high anisotropy H.sub.k and a low coercivity. The laminate provides a dual anisotropy behavior such that the laminate exhibits a high initial permeability at relatively small applied fields during the read operation and a high anisotropy at high applied fields during the write operation. The laminate of the present invention reduces inductive head domain instability produced by the write operation while maintaining high reproducing sensitivity during the read operation. Use of the higher H.sub.k material also reduces the sensitivity of the head performance to variation in process-induced stresses.

公开(公告)号：US5032945A

公开(公告)日：1991-07-16

申请号：US432649

申请日：1989-11-07

Applicant: Bernell E. Argyle ,  Thomas C. Arnoldussen ,  Thomas J. Beaulieu ,  Dean A. Herman, Jr. ,  Sol Krongelb ,  Hin P. E. Lee ,  Daniel A. Nepela ,  Bojan Petek ,  Lubomyr T. Romankiw ,  John C. Slonczewski

Inventor： Bernell E. Argyle ,  Thomas C. Arnoldussen ,  Thomas J. Beaulieu ,  Dean A. Herman, Jr. ,  Sol Krongelb ,  Hin P. E. Lee ,  Daniel A. Nepela ,  Bojan Petek ,  Lubomyr T. Romankiw ,  John C. Slonczewski

IPC: G11B5/31 ,  H01F10/32 ,  H01F41/34

CPC classification number: B82Y25/00 ,  H01F10/3268 ,  H01F41/34 ,  Y10T29/49032 ,  Y10T29/49034

Abstract: Magnetic thin film structures are disclosed including a laminate of a layer of nonmagnetic material sandwiched between first and second layers of magnetic material and at least one edge closure layer of magnetic material disposed on a side edge of the laminate with the edge closure layer being in magnetic contact with the first and second layers of magnetic material. The edge closure layer eliminates magnetic edge closure domains and magnetic edge-curling walls in the yoke and poletip regions, or in a fluxguide of a magnetic recording head to substantially eliminate Barkhausen noise and wall network instabilities. Multiple layer laminates are also disclosed having a plurality of nonmagnetic layers each of which are sandwiched between layers of magnetic material and wherein the laminate includes edge closure layers that contact all the magnetic layers. Several methods are disclosed for fabricating the laminate. In one class of technique, the side edges are deposited together with a top layer in a single plating operation. In an another embodiment, the side edge closure layers are separately plated. Another embodiment provides for a layer of antiferromagnetic material deposited between the nonmagnetic layer and one of the magnetic layers to provide additional anisotropy.

公开(公告)号：US5331728A

公开(公告)日：1994-07-26

申请号：US686782

申请日：1991-05-13

Applicant: Bernell E. Argyle ,  Thomas C. Arnoldussen ,  Thomas J. Beaulieu ,  Dean A. Herman, Jr. ,  Sol Krongelb ,  Hin P. E. Lee ,  Daniel A. Nepela ,  Bojan Petek ,  Lubomyr T. Romankiw ,  John C. Slonczewski

Inventor： Bernell E. Argyle ,  Thomas C. Arnoldussen ,  Thomas J. Beaulieu ,  Dean A. Herman, Jr. ,  Sol Krongelb ,  Hin P. E. Lee ,  Daniel A. Nepela ,  Bojan Petek ,  Lubomyr T. Romankiw ,  John C. Slonczewski

IPC: G11B5/31 ,  H01F10/32 ,  H01F41/34 ,  G11B5/42

CPC classification number: B82Y25/00 ,  H01F10/3268 ,  H01F41/34 ,  Y10T29/49032 ,  Y10T29/49034

Abstract: Magnetic thin film structures including a laminate of a layer of nonmagnetic material sandwiched between first and second layers of magnetic material and at least one edge closure layer of magnetic material disposed on a side edge of the laminate with the edge closure layer being in magnetic contact with the first and second layers of magnetic material. The edge closure layer eliminates magnetic edge closure domains and magnetic edge-curling walls in the yoke and poletip regions, or in a fluxguide of a magnetic recording head to substantially eliminate Barkhausen noise and wall network instabilities. Multiple layer laminates are also disclosed having a plurality of nonmagnetic layers each of which are sandwiched between layers of magnetic material and wherein the laminate includes edge closure layers that contact all the magnetic layers. Several methods are disclosed for fabricating the laminate. In one class of technique, the side edges are deposited together with a top layer in a single plating operation. In an another embodiment, the side edge closure layers are separately plated. Another embodiment provides for a layer of antiferromagnetic material deposited between the nonmagnetic layer and one of the magnetic layers to provide additional anisotropy.

Abstract translation: 磁性薄膜结构包括夹在第一和第二磁性材料层之间的非磁性材料层的叠层，以及设置在层压板的侧边缘上的至少一个磁性材料的边缘封闭层，边缘封闭层与 第一层和第二层磁性材料。 边缘封闭层消除磁轭和poletip区域中的磁边缘封闭域和磁性边缘卷曲壁，或者在磁记录头的磁通导向器中消除巴克豪森噪声和墙网络不稳定性。 还公开了多层层压板，其具有多个非磁性层，每个非磁性层都夹在磁性材料层之间，并且其中层压板包括接触所有磁性层的边缘封闭层。 公开了制造层压板的几种方法。 在一类技术中，在单个电镀操作中，侧边缘与顶层一起沉积在一起。 在另一个实施例中，侧边缘封闭层被单独地电镀。 另一个实施例提供沉积在非磁性层和一个磁性层之间的反铁磁材料层，以提供额外的各向异性。