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1. 发明授权

US5032945A Magnetic thin film structures fabricated with edge closure layers 失效
标题翻译：用边缘封闭层制造的磁性薄膜结构
公开(公告)号：US5032945A
公开(公告)日：1991-07-16
申请号：US432649
申请日：1989-11-07
申请人： 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
发明人： 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分类号： G11B5/31 , H01F10/32 , H01F41/34
CPC分类号： B82Y25/00 , H01F10/3268 , H01F41/34 , Y10T29/49032 , Y10T29/49034
摘要： 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.

2. 发明授权

US5388019A Magnetic thin film structures fabricated with edge closure layers 失效
标题翻译：用边缘封闭层制造的磁性薄膜结构
公开(公告)号：US5388019A
公开(公告)日：1995-02-07
申请号：US163670
申请日：1993-12-07
申请人： 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
发明人： 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分类号： G11B5/31 , H01F10/32 , H01F41/34 , G11B5/147
CPC分类号： B82Y25/00 , H01F10/3268 , H01F41/34 , Y10T29/49032 , Y10T29/49034
摘要： 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.
摘要翻译：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。

3. 发明授权

US5331728A Method of fabricating magnetic thin film structures with edge closure layers 失效
标题翻译：制造具有边缘封闭层的磁性薄膜结构的方法
公开(公告)号：US5331728A
公开(公告)日：1994-07-26
申请号：US686782
申请日：1991-05-13
申请人： 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
发明人： 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分类号： G11B5/31 , H01F10/32 , H01F41/34 , G11B5/42
CPC分类号： B82Y25/00 , H01F10/3268 , H01F41/34 , Y10T29/49032 , Y10T29/49034
摘要： 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.
摘要翻译：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。

4. 发明授权

US4178636A Gradientless propulsion of magnetic bubble domains 失效
标题翻译：无磁鼓风区的推进
公开(公告)号：US4178636A
公开(公告)日：1979-12-11
申请号：US877928
申请日：1978-02-15
申请人： Bernell E. Argyle , John C. Slonczewski , Pieter Dekker
发明人： Bernell E. Argyle , John C. Slonczewski , Pieter Dekker
IPC分类号： G11C19/08
CPC分类号： G11C19/0825
摘要： Magnetic bubble domains are propagated in a magnetic medium in a desired direction using magnetic fields which have no spatial gradients. This is in contrast with conventional propagation techniques where magnetic overlays have to be used with applied magnetic fields in order to move domains. Depending upon the wall magnetization configurations in the domains, these domains are propagated by using, for example, a combination of a steady magnetic field and a magnetic field which varies with time, such as a pulse field or a sinusoidal field. This type of propagation is termed automotion. Bubbles which can automote are generated and detected in the magnetic medium using the principles of automotion. Embodiments are shown for representation of information using different types of bubbles, and in particular it is shown how to discriminate among bubble domains having wall configurations having a common winding number s. In a particular embodiment, a modulated bias field is superimposed on a steady magnetic field in the plane of the magnetic medium. Depending upon the direction of the in-plane magnetic field and upon the wall magnetization configuration of the bubbles, the bubbles can be made to move in different directions regardless of the directions of the modulated bias field.
摘要翻译：使用不具有空间梯度的磁场，磁鼓区域在磁性介质中以期望的方向传播。这与传统的传播技术形成对比，其中必须使用磁性覆盖层来施加磁场以移动域。根据畴中的壁磁化结构，通过使用例如稳定磁场和随时间变化的磁场（诸如脉冲场或正弦场）的组合来传播这些畴。这种类型的传播称为“自动”。可以使用自动化原理在磁性介质中产生和检测可自动进行的气泡。示出了用于表示使用不同类型的气泡的信息的实施例，并且特别地示出了如何区分具有共同绕组数s的壁构造的气泡区域。在特定实施例中，调制偏磁场叠加在磁介质平面中的稳定磁场上。取决于面内磁场的方向和气泡的壁磁化结构，可以使气泡在不同的方向上移动，而不管调制的偏磁场的方向如何。

5. 发明授权

US5392169A Electrical means to diminish read-back signal waveform distortion in recording heads 失效
标题翻译：电气意味着减少记录头中的回读信号波形失真
公开(公告)号：US5392169A
公开(公告)日：1995-02-21
申请号：US73187
申请日：1993-06-08
申请人： Bernell E. Argyle , Anthony P. Praino , Mark E. Re , Rudolf Schafer , Shinji Takayama , Philip L. Trouilloud
发明人： Bernell E. Argyle , Anthony P. Praino , Mark E. Re , Rudolf Schafer , Shinji Takayama , Philip L. Trouilloud
IPC分类号： G11B5/00 , G11B5/09 , G11B5/187 , G11B5/31 , G11B5/455 , G11B5/465 , G11B19/04 , G11C19/08 , H01F13/00 , H01H47/00
CPC分类号： G11B19/04 , G11B5/09 , G11B5/1878 , G11B5/3113 , G11B5/455 , G11B5/465 , G11B2005/0008
摘要： A method and apparatus for conditioning a magnetic read/write head to substantially eliminate read-back pulse distortions associated with unfavorable magnetic domain patterns in the head stores the polarity of the last write current pulse of a write pulse train applied to the head-coils. This polarity is compared to a pre-determined reset current pulse polarity. If the last write current polarity is opposite to the reset current polarity, then a reset pulse, or a series of pulses, having the pre-determined reset polarity is applied to the head prior to performing a read operation with the head. The pre-determined reset polarity corresponds to the polarity that resets the head to the magnetic domain state most preferred for reading due to reduction of read-back distortion. The reset pulse, or pulse train, according to the present invention is of constant polarity. If the last write current pulse polarity is the same as the reset polarity, then no reset pulse is applied to the head. Prior to applying the reset pulse, the head is either re-positioned or, if not re-positioned, the reset pulse is applied to the head only when it is flying over a sector gap.
摘要翻译：用于调节磁读/写头以基本上消除与头部中不利的磁畴图案相关联的回读脉冲失真的方法和装置存储施加到磁头线圈的写入脉冲序列的最后写入电流脉冲的极性。该极性与预定的复位电流脉冲极性进行比较。如果最后的写入电流极性与复位电流极性相反，则在执行与磁头的读取操作之前，将具有预定复位极性的复位脉冲或一系列脉冲施加到磁头。预定的复位极性对应于由于回读失真的减少将磁头重置为最优选用于读取的磁畴状态的极性。根据本发明的复位脉冲或脉冲串具有恒定的极性。如果最后一个写入电流脉冲极性与复位极性相同，则不会对磁头施加复位脉冲。在应用复位脉冲之前，头部被重新定位，或者如果不是重新定位，则仅当其在扇形间隙上飞行时才将复位脉冲施加到头部。

6. 发明授权

US6141093A Method and apparatus for locating power plane shorts using polarized light microscopy 失效
标题翻译：使用偏光显微镜定位电源平面短路的方法和装置
公开(公告)号：US6141093A
公开(公告)日：2000-10-31
申请号：US139515
申请日：1998-08-25
申请人： Bernell E. Argyle , Arnold Halperin , Michael E. Scaman , Edward J. Yarmchuk
发明人： Bernell E. Argyle , Arnold Halperin , Michael E. Scaman , Edward J. Yarmchuk
IPC分类号： G01N21/21 , G01R31/311 , G01N21/00 , G01R27/14
CPC分类号： G01N21/21 , G01R31/311
摘要： An apparatus and corresponding method for detecting, locating, or defining a short in a thin-film module. The apparatus includes a mechanical fixture supporting the module. A current source provides a current pulse to the module which produces a magnetic field and heating nearby the short which turns on and off as the pulsed current in the short turns on and off. Polarized light is directed onto the module, with an intermediate element disposed between the module and the source of the polarized light. The intermediate element may be a stress birefringent coating (e.g., a polyimide insulating layer) disposed on the module and onto which the polarized light is directed. The sample is rotated 0 to 45 degrees to maximize the birefringent effect. Alternatively, the intermediate element may be a magneto-optical Faraday rotator. A microscope is used to observe the module, facilitating identification of a short by the twisting of the polarization of the light as the short expands and shrinks in response to the heating or in response to the localized magnetic field. The preferred rotator is a composite having a garnet substrate, an iron garnet film disposed on the substrate, and a thin aluminum mirror layer disposed on the iron garnet film. The apparatus and method of the present invention have several applications.
摘要翻译：一种用于检测，定位或限定薄膜模块中的短路的装置和相应方法。该装置包括支撑模块的机械夹具。电流源向模块提供电流脉冲，其产生磁场并在短路附近加热，其短路中的脉冲电流接通和断开时导通和截止。偏振光被引导到模块上，中间元件设置在模块和偏振光源之间。中间元件可以是设置在模块上并且偏振光被引导到其上的应力双折射涂层（例如，聚酰亚胺绝缘层）。样品旋转0至45度以最大化双折射效应。或者，中间元件可以是磁光法拉第旋转器。使用显微镜来观察模块，通过随着短路的扩展和响应于加热或响应于局部磁场而收缩，通过扭转光的偏振来促进短路的识别。优选的旋转体是具有石榴石基材，设置在基材上的铁石榴石薄膜和设置在铁石榴石薄膜上的薄铝镜面层的复合体。本发明的装置和方法有几个应用。

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