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11. 发明授权

US06342311B1 High magnetic moment seed layer materials for writer pole tips 有权
标题翻译：高磁矩种子层材料用于写杆极尖
公开(公告)号：US06342311B1
公开(公告)日：2002-01-29
申请号：US09588394
申请日：2000-06-06
申请人： Venkateswara R. Inturi , Martin L. Plumer , Charles H. Tolman , Steve Riemer , Ibro Tabakovic , Steven B. Slade
发明人： Venkateswara R. Inturi , Martin L. Plumer , Charles H. Tolman , Steve Riemer , Ibro Tabakovic , Steven B. Slade
IPC分类号： G11B566
CPC分类号： G11B5/653 , G11B5/3143 , G11B5/3163 , G11B5/656 , G11B5/66 , Y10S428/90 , Y10T428/11 , Y10T428/1186
摘要： A magnetic recording head has a magnetic pole tip and a seed layer upon which the magnetic pole tip is formed. The seed layer is preferably formed of a high magnetic moment material having a saturation magnetization of at least 1.8 Tesla and a high resistance to corrosion. In preferred embodiments of the present invention, the seed layer is preferably formed of 2.1 Tesla Fe44-46Co39-41Ni14.5-15, 1.8 Tesla Fe54-56Ni27-29Co16-18 Tesla Fe86-90Cr10-14, or 1.9 Tesla Fe52-62Co26-36Cr10-14, wherein the subscripts indicate a preferred range of atomic percentages for each element in the given alloy.
摘要翻译：磁记录头具有形成磁极尖端的磁极尖端和种子层。种子层优选由具有至少1.8特斯拉的饱和磁化强度和高耐腐蚀性的高磁矩材料形成。在本发明的优选实施方案中，种子层优选由2.1特斯拉Fe44-46Co39-41Ni14.5-15,1.8特斯拉Fe54-56Ni27-29Co16-18特斯拉Fe86-90Cr10-14或1.9特斯拉Fe52-62Co26- 36Cr10-14，其中下标表示给定合金中每个元素的原子百分比的优选范围。

12. 发明授权

US5563753A Contact scheme for minimizing inductive pickup in magnetoresistive read heads 失效
标题翻译：用于最小化磁阻读取头中的感应拾取器的接触方案
公开(公告)号：US5563753A
公开(公告)日：1996-10-08
申请号：US480533
申请日：1995-06-07
申请人： Gregory S. Mowry , Charles H. Tolman
发明人： Gregory S. Mowry , Charles H. Tolman
IPC分类号： G11B5/012 , G11B5/02 , G11B5/11 , G11B5/39 , G11B5/48
CPC分类号： G11B5/486 , G11B5/012 , G11B5/02 , G11B5/11 , G11B5/3903
摘要： A disc drive recording head which senses magnetic flux from a storage medium includes an MR sensor positioned on a trailing surface of a disc drive slider. First and second electrical contacts connect the MR sensor to first and second pads positioned on the trailing surface of the MR slider and minimizes an inductive voltage induced from the storage medium during the sensing of the magnetic flux.
摘要翻译：感测来自存储介质的磁通量的盘驱动器记录头包括位于盘驱动器滑块的后表面上的MR传感器。第一和第二电触头将MR传感器连接到位于MR滑块的后表面上的第一和第二焊盘，并且在感测磁通量期间最小化从存储介质感应的感应电压。

13. 发明授权

US5554265A Method of making a magnetoresistive sensor 失效
标题翻译：制造磁阻传感器的方法
公开(公告)号：US5554265A
公开(公告)日：1996-09-10
申请号：US421543
申请日：1995-04-13
申请人： Peter I. Bonyhard , James F. Dolejsi , Charles H. Tolman , William P. Wood
发明人： Peter I. Bonyhard , James F. Dolejsi , Charles H. Tolman , William P. Wood
IPC分类号： G11B5/31 , G11B5/39 , G11B5/40 , C23C14/34 , B05D5/12 , G11B5/42
CPC分类号： G11B5/399 , G11B5/3903 , G11B5/3967 , G11B5/313 , G11B5/40
摘要： An MR sensor having improved current density distribution, reduced overall resistance and a substantially planar surface is disclosed. The MR sensor includes an MR layer having first and second outer regions and an active region located between the first and second outer regions. A first permanent magnet region is formed upon the first MR layer outer region and defines a first boundary of the MR layer active region. A second permanent magnet region is formed upon the second MR layer outer region and defines a second boundary of the MR layer active region so that a gap region is positioned at least partially between the first and second permanent magnet regions. A spacer layer is formed on the MR layer active region between the first and second permanent magnet regions. A soft adjacent layer is formed in the active region and upon the spacer layer, and, in some preferred embodiments, also at least partially upon the permanent magnet region.
摘要翻译：公开了具有改善的电流密度分布，降低的总体电阻和基本平坦的表面的MR传感器。 MR传感器包括具有第一和第二外部区域以及位于第一和第二外部区域之间的有源区域的MR层。第一永磁体区域形成在第一MR层外部区域上并且限定MR层有源区域的第一边界。第二永久磁铁区域形成在第二MR层外部区域上并且限定MR层有源区域的第二边界，使得间隙区域至少部分地位于第一和第二永磁体区域之间。在第一和第二永磁体区域之间的MR层有源区上形成间隔层。在有源区和隔离层中形成软相邻层，并且在一些优选实施例中还至少部分地形成在永磁体区域上。

14. 发明授权

US5546256A Inductive transducer with closed-loop pole circumscribing I-shaped pole to reduce leakage flux 失效
标题翻译：感应传感器带有闭环极点，外接I形极，以减少漏磁通
公开(公告)号：US5546256A
公开(公告)日：1996-08-13
申请号：US327182
申请日：1994-10-21
申请人： Charles H. Tolman
发明人： Charles H. Tolman
IPC分类号： G11B5/31 , G11B5/197
CPC分类号： G11B5/3123 , G11B5/312 , G11B5/313 , Y10T29/49046
摘要： A magnetic pole assembly for a transducer includes a first pole piece having first and second arms joined to form front and back regions. The first and second arms are spaced between the front and back regions to form a region of low leakage-flux density. A second pole piece having front and back regions lies partly in the region of low leakage-flux density between the first and second arms of the first pole. The back region of the second pole is joined to the back region of the first pole, and the front regions of the first and second poles confront to form a gap. In one embodiment, the first and second poles are each formed of first and second portions with the first portion of the first pole and the second portion of the second pole formed in a first thin-film layer and the second portion of the first pole and the first portion of the second pole formed in a second thin-film layer spaced apart and substantially parallel to the first layer. Vias join the first and second portions of the poles together as well as the back portions of the poles. An inductive coil has a plurality of convolutions lying between the two layers, each convolution passing between the poles twice.
摘要翻译：用于换能器的磁极组件包括第一极靴，其具有连接以形成前部区域和后部区域的第一和第二臂。第一和第二臂在前部区域和后部区域间隔开以形成低漏磁通密度的区域。具有前区和后区的第二极片部分地位于第一极的第一和第二臂之间的低漏磁通密度区域。第二极的后部区域连接到第一极的后部区域，第一和第二极的前部区域形成间隙。在一个实施例中，第一和第二极分别由第一和第二部分形成，其中第一极的第一部分和第二极的第二部分形成在第一薄膜层中，第二部分形成在第一极的第二部分第二极的第一部分形成在间隔开并基本上平行于第一层的第二薄膜层中。通孔连接极的第一和第二部分以及极的后部。感应线圈具有位于两层之间的多个卷积，每个卷积在两极之间通过。

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