公开(公告)号：EP0739001B1

公开(公告)日：2001-02-21

申请号：EP96105811.2

申请日：1996-04-12

申请人： READ-RITE CORPORATION

发明人： Tan, Minshen ,  Tan, Swie-In

IPC分类号： G11B5/84 ,  C23C14/22 ,  C23C14/46 ,  C23C14/50 ,  G11B5/66

CPC分类号： C23C14/0052 ,  C23C14/081 ,  C23C14/46 ,  C23C14/505 ,  G11B5/232 ,  G11B5/313 ,  G11B5/8404

公开(公告)号：EP0827221A3

公开(公告)日：1999-11-03

申请号：EP97114774.9

申请日：1997-08-26

申请人： READ-RITE CORPORATION

发明人： Nepela, Daniel A.

IPC分类号： H01L43/10 ,  G11B5/39

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： 一种用于最大化传感器的界面性质（10）的方法：如旋阀和GMR传感器（10），在存储装置中使用，包括：选择用于铁磁性层的材料（FM1，FM2）和导电的间隔件（12）做 铁磁性层（FM1，FM2）之间插入。 所选择的材料的电负基本上相匹配，从而在没有电负的差异被最小化。 导电性间隔物（12）提供的材料相对较低的电阻率和/或大的平均自由路径，传感器（10）经历更大的化学稳定性和热稳定性，耐腐蚀，并且实现提高输出信号。

公开(公告)号：EP0558983B1

公开(公告)日：1998-05-13

申请号：EP93102316.2

申请日：1993-02-15

申请人： READ-RITE CORPORATION

发明人： Leung, Chak M. ,  Gooden, Carroll S. ,  Williams, Edgar M.

IPC分类号： G11B5/60

CPC分类号： G11B5/6005

公开(公告)号：EP0821348A3

公开(公告)日：1998-03-04

申请号：EP97111209.9

申请日：1997-07-03

申请人： READ-RITE CORPORATION

发明人： Liu, Francis H. ,  Rou, Shanghsien A. ,  Tong, Hua-Ching ,  Thayamballi, Pradeep K.

IPC分类号： G11B5/31

CPC分类号： G11B5/3967 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/4886 ,  G11B5/4893

摘要： A read-write magnetic head (12) includes a write transducer disposed side-by-side with a read transducer on a substrate (4). The write transducer includes an inductive coil sandwiched between first and second magnetic poles (28, 30). The read transducer comprises a read sensor disposed between first and second magnetic shields (40, 42). The first and second magnetic shields (40, 42) are electrically insulated from and substantially coplanar with the first and second magnetic poles (28, 30), respectively. The number of material layers in the magnetic head (12) is reduced as the first pole and the first shield can be fabricated simultaneously. Likewise, the second pole and the second shield can be fabricated simultaneously. With a reduced number of layers, the magnetic head (12) poses less of a step coverage problem during manufacture. Moreover, the read transducer can be fabricated prior to the inductive coil without subjecting the read transducer to the high heat process required for the curing of photoresist which surrounds the coil. There are also less thermal and magnetic interferences between the write and read transducers during normal operations.

摘要翻译： 读写磁头（12）包括与基片（4）上的读取换能器并排设置的写入换能器。 写入换能器包括夹在第一和第二磁极（28,30）之间的感应线圈。 读取换能器包括设置在第一和第二磁屏蔽（40,42）之间的读取传感器。 第一和第二磁屏蔽（40,42）分别与第一和第二磁极（28,30）电绝缘并基本上共面。 由于第一极和第一屏蔽可以同时制造，磁头（12）中的材料层的数量减少。 类似地，第二极和第二屏蔽可以同时制造。 随着层数的减少，磁头（12）在制造过程中产生较少的台阶覆盖问题。 此外，读取换能器可以在感应线圈之前制造，而不使读取换能器经受围绕线圈的光刻胶固化所需的高热过程。 在正常操作期间，写入和读取换能器之间的热和磁干扰也较少。

公开(公告)号：EP0801380A3

公开(公告)日：1998-03-04

申请号：EP97104983.8

申请日：1997-03-24

申请人： READ-RITE CORPORATION

发明人： Yuan, Samuel W.

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/33 ,  G11B5/3903 ,  G11B5/398 ,  G11B5/399 ,  G11B2005/3996

摘要： A thin film magnetic transducer employs a giant magnetoresistive (GMR) sensing element operating in a (CPP) current-perpendicular-to-the-plane mode. Electrical lead members (12a, 12b) in electric contact with the sensing element provide for the flow of sensor current through the giant magnetoresistive element (14). The height, or both the height and the width, of the GMR sensing element are greater than the height, or both the height and width respectively, of the lead members (12a, 12b), thereby resulting in an increased output signal from the transducer.

公开(公告)号：EP0756269A3

公开(公告)日：1998-01-07

申请号：EP96111648.0

申请日：1996-07-18

申请人： READ-RITE CORPORATION

发明人： Shen, Yong ,  Chuang, T.C.

IPC分类号： G11B5/39

CPC分类号： G11B5/3903 ,  G11B5/3116 ,  G11B5/3163

摘要： A magnetoresitive transducer has an insulating gap layer (13) of variable thickness. The transducer includes a magnetoresistive layer (12) disposed in an active region, and a first magnetic shield layer (8) disposed in the active region and a field region. An insulating layer is spaced between the magnetoresistive layer (12) and the magnetic shield layer (8). The insulating layer is thinner in the active region than in the field region. The probability of other layers bridging through the insulating layer in the field region is substantially reduced. The method of forming the transducer includes depositing a first insulating layer (24) above the magnetic layer, and then selectively etching the first insulating layer (24) by forming an opening in the active region having a cross-sectional profile sloping inwardly toward the magnetic shield layer (8). Thereafter, an insulating layer is deposited atop the first insulating layer (24) having the opening. The combined insulating layers constitute the gap layer of variable thickness in the magnetoresistive transducer.

公开(公告)号：EP0803862A2

公开(公告)日：1997-10-29

申请号：EP97106307.8

申请日：1997-04-16

申请人： READ-RITE CORPORATION

发明人： Nepela, Daniel A. ,  Rana, Amritpal S.

IPC分类号： G11B5/02 ,  G11B5/40 ,  G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/035 ,  G11B5/09 ,  G11B5/40 ,  G11B5/455 ,  G11B5/4923 ,  G11B19/04 ,  G11B2005/0008 ,  G11B2005/0016 ,  G11B2005/0018 ,  G11B2005/3996

摘要： A magnetoresistive (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 (14) in opposite directions, with minimal long term directional diffusion for minimizing electromigration and for increasing the signal output. The magnetoresistive element (14) defines two magnetic centers MC + and MC - 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（磁阻）磁头通过使用具有不同极性的两个增加的直流电而实现最小信号输出，该两个增加的直流电流以相反的方向周期性地通过磁阻元件（14）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（14）限定了与两个电流的极性相对应的两个磁心MC +和MC - ，并且磁中心位于最佳磁性位置。

公开(公告)号：EP0789250A2

公开(公告)日：1997-08-13

申请号：EP97101731.4

申请日：1997-02-04

申请人： READ-RITE CORPORATION

发明人： Lederman, Marcos M. ,  Kroes, Derek Jan

IPC分类号： G01R33/09 ,  G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/3925 ,  G11B2005/3996

摘要： A giant magnetoresistive (GMR) transducer employs a pair of flux guide yoke members (14, 15) that define a magnetic transducing gap (G). A GMR structure (11) formed of stack of multiple layers (11b, 11c, 11d) is located away from the transducing gap (G) between spaced portions of one of the flux guide yoke members (14, 15) and is electrically connected to the facing surfaces of these spaced portions. When a sense current is supplied through the spaced portions of the one flux guide member (14, 15) and through the GMR structure (11), a current-in-the-plane (CIP) mode of operation of the transducer is effectuated. Magnetic bias (21) is supplied to the GMR structure either by a permanent magnet or by a current-carrying bias conductor.

摘要翻译： 巨磁阻（GMR）传感器采用限定磁转换间隙（G）的一对磁通引导轭构件（14,15）。 由堆叠的多层（11b，11c，11d）形成的GMR结构（11）位于远离导磁轭构件（14,15）之一的间隔部分之间的换能间隙（G），并且电连接到 这些间隔部分的相对表面。 当通过一个磁通引导构件（14,15）的间隔部分并通过GMR结构（11）提供感测电流时，实现换能器的平面（CIP）工作模式。 磁偏置（21）由永磁体或载流偏压导体提供给GMR结构。

公开(公告)号：EP0780836A1

公开(公告)日：1997-06-25

申请号：EP96119481.8

申请日：1996-12-04

申请人： READ-RITE CORPORATION

发明人： Chang, Ciuter ,  Hsia, Yiao-Tee

IPC分类号： G11B5/60

CPC分类号： G11B5/6005

摘要： The air bearing surface of an air bearing slider is formed with first and second leading end tapers (10, 12) that are spaced from the sides of the slider. Air bearing pads (14, 16) are formed with transverse sections and longitudinal legs which define a major recessed central region. The leading end tapers and the transverse sections delineate a narrow recessed channel (22) extending from the slider leading end to the recessed central region (18). Angled recessed areas (20, 22) are formed between the legs and sides of the slider. A third pad (24) is located at the trailing end of the slider. As a result, the slider has virtually no roll and improved stiffness for pitch and vertical characteristics of the slider over a large range of altitudes, including sea level to about 10,000 feet above sea level.

摘要翻译： 空气轴承滑块的空气轴承表面形成有与滑块的侧面间隔开的第一和第二前端锥体（10,12）。 空气轴承座（14,16）形成有限定主凹入中心区域的横向部分和纵向腿部。 前端锥体和横截面描绘从滑块前端延伸到凹入中心区域（18）的窄凹槽（22）。 倾斜的凹陷区域（20,22）形成在滑块的腿和侧面之间。 第三垫（24）位于滑块的后端。 因此，滑块在大范围的高度（包括海平面至海拔约10,000英尺）处实际上没有滚动和滑块的俯仰和垂直特性的刚度提高。

公开(公告)号：EP0770991A2

公开(公告)日：1997-05-02

申请号：EP96117166.7

申请日：1996-10-25

申请人： READ-RITE CORPORATION

发明人： Ravipati, Durga P. ,  Rudy, Steven Clark

IPC分类号： G11B5/39

CPC分类号： G11B5/3903 ,  G11B5/3163 ,  G11B5/3932 ,  G11B5/399 ,  G11B5/40 ,  Y10T29/49021

摘要： A magnetoresistive read transducer includes a magnetoresistive (MR) layer (7) having end regions spaced by a central active region. A pair of hard magnetic layers (8) provide longitudinal magnetic bias to the MR layer (7), with each of the hard magnetic bias layers (8) disposed in contact with one of the end regions of the MR layer (7). A pair of electrical lead members (6) are disposed in contact with the end regions of the MR layer (7) and with the hard magnetic bias layers (8). The hard magnetic bias layers (8) and the electrical lead members (6) are deposited, followed by selective removal of portions of the lead members to expose the edges of the hard bias material.

摘要翻译： 磁阻读取变换器包括具有由中央有源区域隔开的端部区域的磁阻（MR）层（7）。 一对硬磁层（8）为MR层（7）提供纵向磁偏置，每个硬磁偏置层（8）与MR层（7）的一个端部区域接触。 一对电引线部件（6）设置成与MR层（7）的端部区域和硬磁偏置层（8）接触。 沉积硬磁偏置层（8）和电引线部件（6），随后选择性去除部分引线部件以露出硬偏置材料的边缘。