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1. 发明授权

US5793550A Magnetoresistive head using sense currents of opposite polarities 失效
标题翻译：磁阻头使用相反极性的感应电流
公开(公告)号：US5793550A
公开(公告)日：1998-08-11
申请号：US636059
申请日：1996-04-23
申请人： Daniel A. Nepela , Amritpal S. Rana
发明人： Daniel A. Nepela , Amritpal S. Rana
IPC分类号： G11B5/39 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/035 , G11B5/09 , G11B5/40 , G11B5/455 , G11B5/49 , G11B19/04 , G11B5/03 , G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/02 , G11B5/035 , G11B5/40 , G11B5/455 , G11B5/4923 , G11B19/04 , G11B2005/0008 , G11B2005/0016 , G11B2005/0018 , G11B2005/3996 , G11B5/09
摘要： A magnetoresistive head achieves maximum signal output with minimal electromigration by use of two increased direct currents with different polarities which are directed periodically through a magnetoresistive element in opposite directions, with minimal long term directional diffusion for minimizing electromigration and for increasing the signal output. The magnetoresistive element defines two magnetic centers MC.sup.+ and MC.sup.- that correspond to the polarities of the two currents, and the magnetic centers are positioned at optimal magnetic locations.
摘要翻译：磁阻头通过使用具有不同极性的两个增加的直流电而实现最大信号输出，这些直流具有不同的极性，周期性地通过磁阻元件以相反方向定向，具有最小的长期方向扩散以最小化电迁移和增加信号输出。磁阻元件限定两个对应于两个电流的极性的磁心MC +和MC-，并且磁中心位于最佳的磁性位置。

2. 发明授权

US07482298B2 Superconductor compositions operable at high temperatures 失效
标题翻译：超导体组合物可在高温下操作
公开(公告)号：US07482298B2
公开(公告)日：2009-01-27
申请号：US11604142
申请日：2006-11-27
申请人： Daniel A. Nepela
发明人： Daniel A. Nepela
IPC分类号： C04B35/00
CPC分类号： H01L39/12 , Y10S420/901
摘要： The composition of compounds containing a multiplicity of different elements are optimized in general by full or partial substitutions of one or more of the atoms in such compounds so as to effect an Ne/χ value which represents a peak or near peak value in λ (the electron-phonon coupling constant) so as to maximize Tc for such compositions of matter.
摘要翻译：含有多种不同元素的化合物的组成通常通过这种化合物中的一个或多个原子的全部或部分取代被优化，以便实现代表λ中的峰值或近峰值的Ne / chi值（电子 - 声子耦合常数），以使这种物质组合物的Tc最大化。

3. 发明申请

US20080125323A1 Superconductor compositions operable at high temperatures 失效
标题翻译：超导体组合物可在高温下操作
公开(公告)号：US20080125323A1
公开(公告)日：2008-05-29
申请号：US11604142
申请日：2006-11-27
申请人： Daniel A. Nepela
发明人： Daniel A. Nepela
IPC分类号： H01L39/24
CPC分类号： H01L39/12 , Y10S420/901
摘要： The composition of compounds containing a multiplicity of different elements are optimized in general by full or partial substitutions of one or more of the atoms in such compounds so as to effect an Ne/χ value which represents a peak or near peak value in λ (the electron-phonon coupling constant) so as to maximize Tc for such compositions of matter.
摘要翻译：含有多种不同元素的化合物的组成通常通过这种化合物中的一个或多个原子的全部或部分取代被优化，以便实现代表λ中的峰值或近峰值的Ne / chi值（电子 - 声子耦合常数），以使这些物质组合物的T C最大化。

4. 发明授权

US06330131B1 Reduced stiction air bearing slider 失效
标题翻译：减少空气轴承滑块滑块
公开(公告)号：US06330131B1
公开(公告)日：2001-12-11
申请号：US08121876
申请日：1993-09-17
申请人： Daniel A. Nepela , Paul H. Schmidt
发明人： Daniel A. Nepela , Paul H. Schmidt
IPC分类号： G11B1732
CPC分类号： G11B5/6005 , F16C33/10
摘要： An air bearing slider for a magnetic head assembly is configured with taper flat outer rails and a recessed region between the rails in one embodiment of the invention, a hard wear-resistant layer is deposited over part of the rail area, with a thin residual layer over the remainder of the slider area, yielding a step in thickness near the load point. In another embodiment, the wear resistant layer appears only on the side rails. In an alternative embodiment using a tripad configuration of the air bearing surface, the hard wear-resistant layer is disposed on portions of all three pads. The invention allows control and minimization of the stiction forces between an air bearing slider and a magnetic disk, particularly during liftoff at the start of disk drive operation.
摘要翻译：在本发明的一个实施例中，用于磁头组件的空气轴承滑块被构造成具有锥形平坦的外轨道和轨道之间的凹陷区域，硬的耐磨层沉积在轨道区域的一部分上，具有薄的残余层在滑块区域的剩余部分之后，在加载点附近产生厚度的台阶。在另一个实施例中，耐磨层只出现在侧轨上。在使用空气轴承表面的三联结构的替代实施例中，硬耐磨层设置在所有三个焊盘的部分上。本发明允许控制和最小化空气轴承滑块和磁盘之间的静摩擦力，特别是在磁盘驱动器操作开始时的提升期间。

5. 发明授权

US5920979A Method of forming an inductive magnetic head with approximate zero magnetostriction 失效
标题翻译：形成具有近似零磁致伸缩的感应磁头的方法
公开(公告)号：US5920979A
公开(公告)日：1999-07-13
申请号：US971593
申请日：1997-11-17
申请人： Daniel A. Nepela , Siamak Sarhadi
发明人： Daniel A. Nepela , Siamak Sarhadi
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/3113 , G11B5/3109 , G11B5/3156 , G11B5/3163 , Y10T29/49034 , Y10T29/49036 , Y10T29/49043 , Y10T29/49044
摘要： A low noise inductive magnetic head used for writing and reading magnetic signals onto and from a magnetic recording medium includes two magnetic poles P1, P2 that are formed on a substrate which define a transducing gap therebetween. Each of the poles P1, P2 includes an outer magnetic layer formed remotely from the gap and an inner magnetic layer formed adjacent to the gap. The inner and outer magnetic layers have magnetostrictions (.lambda..sub.s) of approximately equal but opposite values, such that each of the magnetic poles P1, P2 exhibits a net magnetostriction of zero or is biased within a predefined range, regardless of the individual magnetostriction values of its layers.
摘要翻译：用于将磁信号写入磁记录介质和从磁记录介质读取的低噪声感应磁头包括形成在衬底上的两个磁极P1，P2，其限定了它们之间的换能间隙。磁极P1，P2中的每一个包括从间隙远程形成的外磁性层和邻近间隙形成的内磁层。内磁层和外磁层具有大致相等但相反值的磁致伸缩（λs），使得每个磁极P1，P2表现出净磁致伸缩为零或被偏置在预定范围内，而不管各个磁致伸缩值它的层。

6. 发明授权

US5734533A Dual gap magnetic head and method of making the same 失效
标题翻译：双间隙磁头及其制作方法
公开(公告)号：US5734533A
公开(公告)日：1998-03-31
申请号：US648329
申请日：1996-05-15
申请人： Daniel A. Nepela
发明人： Daniel A. Nepela
IPC分类号： G11B5/23 , G11B5/147
CPC分类号： G11B5/232
摘要： An air bearing magnetic head is formed with a dual gap for minimizing side fringe fields, side reading, side writing, cross-talk interference, and pulse asymmetry, while maintaining the efficiency of the head. The method of manufacturing the head enables the control of the effective track width with great precision. The head is made by depositing a layer of magnetic material that defines a first pole P1. A dual gap is formed on the first pole P1 by depositing a first layer of nonmagnetic material that defines two side gaps and part of a central gap interposed between the two side gaps. A second layer of nonmagnetic material is deposited on the first layer in order to further define the central gap. In its final configuration, the central gap is substantially wider than the two side gaps. Another layer of magnetic material is deposited over the central and side gaps for defining a second pole P2. The outer edges of the dual gap and the two poles P1, P2 are trimmed such that sections of the side gaps are gradually recessed relative to the air bearing surface of the magnetic head.
摘要翻译：空气轴承磁头形成有双重间隙，用于最小化边缘场，侧面读数，侧面写入，串扰干扰和脉冲不对称，同时保持头部的效率。制造头部的方法能够以高精度控制有效轨道宽度。头部通过沉积限定第一极P1的磁性材料层制成。通过沉积限定两个侧面间隙的第一层非磁性材料和插入在两个侧面间隙之间的中心间隙的一部分，在第一极P1上形成双间隙。第二层非磁性材料沉积在第一层上以进一步限定中心间隙。在其最终构造中，中心间隙基本上比两个侧面间隙宽。另一层磁性材料沉积在中心和侧面间隙上，用于限定第二极P2。双间隙和两个极P1，P2的外边缘被修整成使得侧间隙的部分相对于磁头的空气支承表面逐渐凹陷。

7. 发明授权

US5359480A Magnetic head air bearing slider 失效
标题翻译：磁头空气轴承滑块
公开(公告)号：US5359480A
公开(公告)日：1994-10-25
申请号：US993438
申请日：1992-12-21
申请人： Daniel A. Nepela , Chak M. Leung , Ciuter Chang
发明人： Daniel A. Nepela , Chak M. Leung , Ciuter Chang
IPC分类号： G11B5/60 , G11B5/48
CPC分类号： G11B5/6005
摘要： An air bearing slider of a thin film magnetic head assembly is configured with tapered portions at its leading edge and with two side rails extending from the tapers to the trailing edge of the slider. Recesses that are formed in the rails are spaced from the tapered portions. Each rail may be configured with one or more recesses. In one embodiment, the two recesses of each rail are asymmetrically disposed relative to the tapered portion of the rail and to the trailing edge of the slider. In such embodiment, the recesses do not extend to the slider trailing edge. In alternative embodiments, the recesses are spaced from the tapered portions but extend to the trailing edge of the slider. The recesses may be arcuately shaped or have angled portions or other geometries.
摘要翻译：薄膜磁头组件的空气轴承滑块在其前缘处被构造成具有锥形部分，并且具有从滑块延伸到滑块的后缘的两个侧轨。形成在轨道中的凹部与锥形部分间隔开。每个导轨可以配置有一个或多个凹部。在一个实施例中，每个轨道的两个凹槽相对于轨道的锥形部分和滑块的后缘不对称地设置。在这种实施例中，凹槽不延伸到滑块后缘。在替代实施例中，凹部与锥形部分间隔开，但延伸到滑块的后缘。凹槽可以是弧形的或具有成角度的部分或其他几何形状。

8. 发明授权

US06828897B1 Methods and compositions for optimizing interfacial properties of magnetoresistive sensors 失效
标题翻译：用于优化磁阻传感器界面特性的方法和组合
公开(公告)号：US06828897B1
公开(公告)日：2004-12-07
申请号：US09648006
申请日：1998-08-03
申请人： Daniel A. Nepela
发明人： Daniel A. Nepela
IPC分类号： H01C1014
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G01R33/093 , G11B5/3903 , G11B5/40 , G11B2005/3996 , H01F41/302 , H01L43/10
摘要： A method for maximizing the interfacial properties of magnetoresistive sensors, such as spin valve and GMR sensors used in storage devices, comprises selecting the materials for ferromagnetic layers and for electrically conductive spacers that are interposed between the ferromagnetic layers. The electronegativities of the selected materials are substantially matched so that an absolute value of the differences in electronegativities is minimized. The conductive spacer material provides a relatively low resistivity and a large mean free path. The sensors experience greater chemical and thermal stability, are corrosion resistant, and realize an increased signal output.
摘要翻译：用于最大化磁阻传感器（例如存储装置中使用的自旋阀和GMR传感器）的界面特性的方法包括选择介于铁磁层之间的铁磁层和导电间隔物的材料。所选材料的电负性基本匹配，使得电负性差异的绝对值最小化。导电间隔物材料提供相对低的电阻率和大的平均自由程。传感器具有更高的化学和热稳定性，具有耐腐蚀性，并实现增加的信号输出。

9. 发明授权

US5917680A Magnetoresistive head with magnetic bias level control 失效
标题翻译：具有磁偏置电平控制的磁阻头
公开(公告)号：US5917680A
公开(公告)日：1999-06-29
申请号：US668859
申请日：1996-06-24
申请人： Erich P. Valstyn , Charles R. Bond , Daniel A. Nepela
发明人： Erich P. Valstyn , Charles R. Bond , Daniel A. Nepela
IPC分类号： G11B5/00 , G11B5/012 , G11B5/02 , G11B5/09 , G11B5/39 , G11B5/127
CPC分类号： G11B5/00 , G11B5/012 , G11B5/02 , G11B2005/0008 , G11B2005/0018 , G11B5/09 , G11B5/3922
摘要： A magnetoreristive head assembly has a magnetic bias level control for continuous compensation of thermal, stray field and stress fluctuations, as well as other types of fluctuations. The magnetoresistive head assembly includes a magnetoresistive element for sensing signals recorded on a magnetic medium, and for generating electrical signals corresponding to the recorded signals. A bias current balancing circuit has an input connected to the magnetoresistive element for sensing the electrical signals and for generating a correction bias current therefrom. A feedback correction circuit converts the correction bias current into a correction magnetic bias field and applies the field to the magnetoresistive element to limit the shifting of a current bias point of the magnetoresistive element and to compensate for bias fluctuations.
摘要翻译：磁电磁头组件具有用于连续补偿热，杂散场和应力波动以及其它类型波动的磁偏置电平控制。磁阻头组件包括用于感测记录在磁介质上的信号并用于产生对应于记录信号的电信号的磁阻元件。偏置电流平衡电路具有连接到磁阻元件的输入端，用于感测电信号并从中产生校正偏置电流。反馈校正电路将校正偏置电流转换成校正磁偏置场，并将场施加到磁阻元件以限制磁阻元件的电流偏置点的偏移并补偿偏置波动。

10. 发明授权

US5742162A Magnetoresistive spin valve sensor with multilayered keeper 失效
标题翻译：具有多层保持器的磁阻自旋阀传感器
公开(公告)号：US5742162A
公开(公告)日：1998-04-21
申请号：US682276
申请日：1996-07-17
申请人： Daniel A. Nepela , Marcos M. Lederman
发明人： Daniel A. Nepela , Marcos M. Lederman
IPC分类号： G01R33/09 , H01L43/08
CPC分类号： B82Y25/00 , G01R33/093 , H01L43/08
摘要： A magnetic sensing structure includes a spin valve sensor having a pinned magnetic layer and a free magnetic layer, the direction of magnetization of the free layer varying as a function of the magnetic field applied to the structure. A multilayered magnetic keeper structure is provided to cancel the magnetostatic field from the pinned layer to provide an ideal bias profile for the structure in the absence of an applied magnetic field. Longitudinal magnetic bias may be applied to the spin valve sensor through a contiguous junction magnetic structure adjacent to the keeper structure and spin valve sensor.
摘要翻译：磁感测结构包括具有钉扎磁性层和自由磁性层的自旋阀传感器，自由层的磁化方向根据施加到该结构的磁场的函数而变化。提供多层磁保持器结构来抵消来自被钉扎层的静磁场，以在没有施加的磁场的情况下为结构提供理想的偏置轮廓。可以通过与保持器结构和自旋阀传感器相邻的连续结磁结构将自旋阀传感器施加纵向磁偏置。

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