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1. 发明授权

US06215630B1 Diamond-like carbon and oxide bilayer insulator for magnetoresistive transducers 失效
标题翻译：用于磁阻换能器的类金刚石碳和氧化物双层绝缘体
公开(公告)号：US06215630B1
公开(公告)日：2001-04-10
申请号：US08741277
申请日：1996-10-30
申请人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
发明人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
IPC分类号： G11B533
CPC分类号： G11B5/3906 , G11B5/3163 , G11B5/3903 , H01F41/34 , Y10T409/303752
摘要： A magnetic structure is formed by depositing a layer of diamond-like carbon onto the exposed surface of an a first material and depositing a layer of second material onto the layer of diamond-like carbon. A photoresist is applied to the exposed surface of the second layer and is patterned in the form of the desire structure. The exposed portions of the second layer are removed with a wet etchant that does not attack the diamond-like carbon layer. Thereafter, any remaining photoresist is removed.
摘要翻译：通过在第一材料的暴露表面上沉积一层类金刚石碳并将一层第二材料沉积到类金刚石碳层上形成磁性结构。将光致抗蚀剂施加到第二层的暴露表面，并以期望结构的形式进行图案化。用不侵蚀类金刚石碳层的湿蚀刻剂去除第二层的暴露部分。此后，除去任何剩余的光致抗蚀剂。

2. 发明授权

US5668689A Inverted magnetoresistive head 失效
标题翻译：倒置磁阻头
公开(公告)号：US5668689A
公开(公告)日：1997-09-16
申请号：US695756
申请日：1996-08-08
申请人： Allan E. Schultz , Frank S. Stageberg , Kenneth P. Ash , Brian S. Zak
发明人： Allan E. Schultz , Frank S. Stageberg , Kenneth P. Ash , Brian S. Zak
IPC分类号： G11B5/39
CPC分类号： G11B5/3903 , G11B5/3967
摘要： An inverted magnetoresistive head is disclosed. The inverted magnetoresistive head includes a reader positioned on top of a writer. The writer includes a bottom pole, a polymer insulator, a write gap, a pole tip and a top pole. The reader includes a bottom shield, a first reader gap, a magnetoresistive element, electrical contacts, a second reader gap and a shield.
摘要翻译：公开了一种反转磁阻磁头。反转磁阻头包括位于写入器顶部的读取器。作者包括底极，聚合物绝缘体，写间隙，极尖和顶极。读取器包括底部屏蔽，第一读取器间隙，磁阻元件，电触点，第二读取器间隙和屏蔽。

3. 发明授权

US5666247A No-field, low power FeMn deposition giving high exchange films 失效
标题翻译：无场，低功率FeMn沉积给予高交换膜
公开(公告)号：US5666247A
公开(公告)日：1997-09-09
申请号：US437646
申请日：1995-05-09
申请人： Allan E. Schultz
发明人： Allan E. Schultz
IPC分类号： C23C14/34 , G11B5/39 , H01F10/32
CPC分类号： B82Y25/00 , G11B5/399 , H01F10/3218 , G11B5/3932
摘要： A method of producing a magnetoresistive read transducer with improved longitudinal bias due to high exchange coupling is disclosed. A layer of antiferromagnetic material is sputtered deposited onto a layer of ferromagnetic material in the absence of a magnetic field and at a power density below 0.7 W/cm.sup.2. The layers of ferromagnetic material and antiferromagnetic material are annealed at a low temperature of between 200.degree. C. and 250.degree. C. for between 6 and 26 hours.
摘要翻译：公开了一种由于高交换耦合而产生具有改进的纵向偏置的磁阻读取传感器的方法。在不存在磁场和功率密度低于0.7W / cm 2的情况下溅射沉积在铁磁材料层上的一层反铁磁性材料。铁磁材料和反铁磁性材料层在200〜250℃的低温下退火6〜26小时。

4. 发明授权

US5658470A Diamond-like carbon for ion milling magnetic material 失效
标题翻译：用于离子研磨磁性材料的类金刚石碳
公开(公告)号：US5658470A
公开(公告)日：1997-08-19
申请号：US571395
申请日：1995-12-13
申请人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
发明人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
IPC分类号： C23F4/00 , G11B5/31 , B44C1/22 , C23F1/00
CPC分类号： C23F4/00 , G11B5/3163 , G11B5/3116
摘要： A diamond-like carbon mask is formed on the surface of the magnetic material for ion-milling the magnetic material into a magnetic pole of a transducer. The mask is formed by depositing a layer of diamond-like carbon over the magnetic material. Successive layers of photoresist, SiO.sub.2 and photoresist are applied over the magnetic material. The second layer of photoresist is patterned in the shape of the pole being formed. The exposed insulating layer is etched with an etchant that does not attack the diamond-like carbon, the exposed portions of the photoresist are exposed and removed, and the exposed portion of the diamond-like carbon is etched with an oxygen etchant. The remaining photoresist is washed away to remove the remaining insulating material. In one form of the invention, a layer of SiO.sub.2 may additionally be formed over the diamond-like carbon to protect the diamond-like carbon from being affected by any undercut of the photoresist by the oxygen etchant. The SiO.sub.2 layer is etched prior to etching the diamond-like carbon. The mask is used to ion mill the magnetic material to the desired pole.
摘要翻译：在磁性材料的表面上形成类金刚石碳掩模，用于将磁性材料离子研磨成换能器的磁极。掩模通过在磁性材料上沉积一层类金刚石碳而形成。光致抗蚀剂，SiO 2和光致抗蚀剂的连续层被施加在磁性材料上。第二层光致抗蚀剂被图案化成形成的极的形状。暴露的绝缘层用不侵蚀类金刚石碳的蚀刻剂蚀刻，光刻胶的暴露部分被暴露和去除，并且用氧蚀刻剂蚀刻类金刚石碳的暴露部分。洗去剩余的光致抗蚀剂以除去剩余的绝缘材料。在本发明的一种形式中，还可以在类金刚石碳之上形成SiO 2层，以保护类金刚石碳免受氧蚀刻剂的光刻胶的任何底切的影响。在蚀刻类金刚石碳之前蚀刻SiO 2层。该掩模用于将磁性材料离子研磨到所需的极点。

5. 发明授权

US5712565A MR sensor having thick active region between two thinner inactive MR regions topped with respective permanent magnets 失效
标题翻译： MR传感器在两个较薄的非活性MR区域之间具有较厚的有源区域，其顶部具有各自的永磁体
公开(公告)号：US5712565A
公开(公告)日：1998-01-27
申请号：US302799
申请日：1994-09-13
申请人： Allan E. Schultz , Peter K. George , Arthur Calderon , Jumna P. Ramdular , Juan J. Fernandez-De Castro , Leroy L. Longworth , Peter I. Bonyhard
发明人： Allan E. Schultz , Peter K. George , Arthur Calderon , Jumna P. Ramdular , Juan J. Fernandez-De Castro , Leroy L. Longworth , Peter I. Bonyhard
IPC分类号： G01R33/09 , G11B5/39 , G01R33/02
CPC分类号： G11B5/3932 , G01R33/09 , G01R33/096
摘要： A magnetoresistive sensor (10) having permanent magnet stabilization includes a magnetoresistive layer (12), at least one permanent magnet (14a or 14b), and first and second current contacts (16a and 16b). The magnetoresistive layer (12) has an active sensing region (18) having a first thickness, and at least one under layer region (26a or 26b), with each under layer region (26a or 26b) having a second thickness that is less than the first thickness. Each permanent magnet (14a or 14b) is formed upon an under layer region (26a or 26b) of the magnetoresistive layer (12), and the first and second contacts (16a and 16b) are electrically coupled to the active region (18).
摘要翻译： PCT No.PCT / US94 / 07064 Sec。 371日期1994年9月13日 102（e）1994年9月13日PCT PCT 1994年6月22日PCT公布。出版物WO95 / 35508 日期：1995年12月28日具有永磁体稳定性的磁阻传感器（10）包括磁阻层（12），至少一个永磁体（14a或14b）以及第一和第二电流触头（16a和16b）。磁阻层（12）具有具有第一厚度的主动感测区域（18）和至少一个下层区域（26a或26b），每个下层区域（26a或26b）的第二厚度小于第一厚度。每个永磁体（14a或14b）形成在磁阻层（12）的下层区域（26a或26b）上，并且第一和第二触点（16a和16b）电耦合到有源区域（18）。

6. 发明授权

US5681426A Diamond-like carbon wet etchant stop for formation of magnetic transducers 失效
标题翻译：钻石状碳湿蚀刻剂停止形成磁性换能器
公开(公告)号：US5681426A
公开(公告)日：1997-10-28
申请号：US571469
申请日：1995-12-13
申请人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
发明人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
IPC分类号： G11B5/31 , G11B5/39 , H01F41/34 , B44C1/22
CPC分类号： G11B5/3906 , G11B5/3163 , H01F41/34 , G11B5/3903 , Y10T409/303752
摘要： A magnetic structure is formed by depositing a layer of diamond-like carbon onto the exposed surface of an a first material and depositing a layer of second material onto the layer of diamond-like carbon. A photoresist is applied to the exposed surface of the second layer and is patterned in the form of the desire structure. The exposed portions of the second layer are removed with a wet etchant that does not attack the diamond-like carbon layer. Thereafter, any remaining photoresist is removed.
摘要翻译：通过在第一材料的暴露表面上沉积一层类金刚石碳并将一层第二材料沉积到类金刚石碳层上而形成磁性结构。将光致抗蚀剂施加到第二层的暴露表面，并以期望结构的形式进行图案化。用不侵蚀类金刚石碳层的湿蚀刻剂去除第二层的暴露部分。此后，除去任何剩余的光致抗蚀剂。

7. 发明授权

US5640292A Diamond-like carbon encapsulation of magnetic heads 失效
标题翻译：钻石状碳封装磁头
公开(公告)号：US5640292A
公开(公告)日：1997-06-17
申请号：US587270
申请日：1996-01-17
申请人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
发明人： Allan E. Schultz , L. Vincent Ruscello , William H. Nunne
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/3106
摘要： A thin film magnetic transducer supported on a substrate includes a coil that terminates at pads supported on the substrate. A layer of diamond-like carbon material encapsulates the head, substrate and coil, but not the pads. A thin layer of diamond-like carbon is deposited over the exposed portions of the transducer, coil and substrate. Three techniques are described for exposing the pads including employing a photoresist mask, depositing an adhesive layer of silicon over the conductive paths but not the pads, and using a photoresist mask to etch the diamond-like carbon layer over the pads and breaking down the silicon adhesive layer with a design voltage.
摘要翻译：支撑在基板上的薄膜磁换能器包括终止在衬底上的衬垫上的线圈。一层类似钻石的碳材料封装了头部，基底和线圈，但不包括垫片。在传感器，线圈和基板的暴露部分上沉积一层类似金刚石的碳。描述了三种技术，用于曝光焊盘，包括采用光致抗蚀剂掩模，在导电路径上沉积硅粘合剂层而不是焊盘，并且使用光致抗蚀剂掩模在焊盘上蚀刻类金刚石碳层并分解硅具有设计电压的粘合剂层。

8. 发明授权

US5390420A MR element-to-contact alignment test structure 失效
标题翻译： MR元件对接触对准测试结构
公开(公告)号：US5390420A
公开(公告)日：1995-02-21
申请号：US198946
申请日：1994-02-18
申请人： Allan E. Schultz
发明人： Allan E. Schultz
IPC分类号： G01B7/31 , G01R33/09 , G01C15/00
CPC分类号： G01R33/09 , G01B7/31
摘要： A device and method for determining alignment accuracy between magnetoresistive elements and contacts of magnetoresistive heads formed on a wafer are disclosed. A first alignment test structure is defined using a first photomask. The first alignment test structure is formed from a first material having a first characteristic sheet resistivity. A second alignment test structure is defined using a second photomask. The second alignment test structure is formed from a second material having a second characteristic sheet resistivity lower than the first characteristic sheet resistivity. The second alignment test structure is formed in contact with the first alignment test structure. A resistance value is dependent upon the first and second characteristic sheet resistivities and upon alignment between the first alignment test structure and the second alignment test structure such that changes in alignment between the first and second alignment test structures result in changes in the resistance value. Changes in the resistance value are indicative of changes in alignment between magnetoresistive elements and contacts formed on the wafer.
摘要翻译：公开了一种用于确定磁阻元件和形成在晶片上的磁阻头的触点之间的对准精度的装置和方法。使用第一光掩模来定义第一对准测试结构。第一对准测试结构由具有第一特征薄片电阻率的第一材料形成。使用第二光掩模来定义第二对准测试结构。第二对准测试结构由具有低于第一特征薄片电阻率的第二特征薄片电阻率的第二材料形成。第二对准测试结构形成为与第一对准测试结构接触。电阻值取决于第一和第二特征片电阻率，以及第一对准测试结构和第二对准测试结构之间的对准，使得第一和第二对准测试结构之间的对准变化导致电阻值的变化。电阻值的变化表示磁阻元件和形成在晶片上的触点之间的对准变化。

9. 发明授权

US06301076B1 Narrow track inductive write head having a two-piece pole 有权
标题翻译：窄轨感应写头，具有两片极
公开(公告)号：US06301076B1
公开(公告)日：2001-10-09
申请号：US09246448
申请日：1999-02-09
申请人： Frank E. Stageberg , Kenneth P. Ash , James K. Price , Feng Wang , Elzbieta J. Haftek , Allan E. Schultz , Richard P. Larson
发明人： Frank E. Stageberg , Kenneth P. Ash , James K. Price , Feng Wang , Elzbieta J. Haftek , Allan E. Schultz , Richard P. Larson
IPC分类号： G11B5147
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/313 , G11B5/3153 , G11B5/3163 , Y10T29/49025 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044
摘要： A two-piece pole for an inductive write head has a first pole piece in the tip region contiguous the gap and confronting the other pole across the gap. The first pole piece has a width defining the gap width of the write head at the air bearing surface. A second pole piece is connected to the first pole piece and extends to the back gap. At least a portion of the second pole piece is connected to the first pole piece and has a width larger than the width of the first pole piece. The second pole piece means has surfaces within the pole tip region that intersect at external corners facing the gap, at least two surfaces of each of these external corners being joined at an obtuse angle so that none of said external corner is a sharp external corner, thereby minimizing fringe fields. In one form, a pole cap between the first and second pole pieces has a trapezoidal configuration forming the obtuse angles.
摘要翻译：用于感应式写入头的两片式极头具有尖端区域中的与间隙连接的第一极片，并且将另一极对面跨越间隙。第一极片具有限定写入头在空气支承表面处的间隙宽度的宽度。第二极靴连接到第一极靴并延伸到后隙。第二极靴的至少一部分连接到第一极靴，其宽度大于第一极靴的宽度。第二极靴装置具有在极尖区域内的面向间隙的外角处的表面，这些外角中的每一个的至少两个表面以钝角连接，使得所述外角部都不是尖锐的外角，从而最小化边缘场。在一种形式中，第一和第二极片之间的极帽具有形成钝角的梯形构造。

10. 发明授权

US06754947B2 Method for forming a narrow track inductive write head having two-piece pole 失效
标题翻译：用于形成具有两片极的窄轨感应写头的方法
公开(公告)号：US06754947B2
公开(公告)日：2004-06-29
申请号：US09928783
申请日：2001-08-13
申请人： Frank E. Stageberg , Kenneth P. Ash , James K. Price , Feng Wang , Elzbieta J. Haftek , Allan E. Schultz , Richard P. Larson
发明人： Frank E. Stageberg , Kenneth P. Ash , James K. Price , Feng Wang , Elzbieta J. Haftek , Allan E. Schultz , Richard P. Larson
IPC分类号： G11B5127
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/313 , G11B5/3153 , G11B5/3163 , Y10T29/49025 , Y10T29/49032 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044
摘要： A process of forming a two-piece pole for an inductive write head involves first forming a first pole piece having a width between opposite side surfaces defining a gap width of a transducing gap at an air bearing surface of the head. The process next involves forming a second pole piece having a first region remote from the air bearing surface and a second region extending from the first region toward the air bearing surface. The first region is wider than the width of the first pole piece. The second pole piece is formed so that at least a portion of the second region is contiguous a portion of the first pole piece and so that no sharp external corners exist between the first pole tip piece and the second pole piece within a pole tip region of the head.
摘要翻译：形成用于感应写头的双片极的过程包括首先形成第一极片，该第一极片在相对的侧表面之间具有限定在头部的空气支承表面处的换能间隙的间隙宽度的宽度。该过程接下来涉及形成具有远离空气支承表面的第一区域的第二极靴和从第一区域向空气支承表面延伸的第二区域。第一区域比第一极靴的宽度宽。第二极靴被形成为使得第二区域的至少一部分邻接第一极靴的一部分，并且使得在第一极靴末端区域和第二极靴区域内的第一极尖端部件和第二极靴之间不存在尖锐的外角头部。

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