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1. 发明授权

US07085100B2 Magnetic head having a bilayer pole tip 失效
标题翻译：具有双层极尖的磁头
公开(公告)号：US07085100B2
公开(公告)日：2006-08-01
申请号：US10101394
申请日：2002-03-19
申请人： Tom King Harris, III , Wen-chien David Hsiao , Gautam Mohan Khera , David Kaimon Lee , Edward Hin Pong Lee , Hugo Alberto Emilio Santini , Samuel Wei-san Yuan
发明人： Tom King Harris, III , Wen-chien David Hsiao , Gautam Mohan Khera , David Kaimon Lee , Edward Hin Pong Lee , Hugo Alberto Emilio Santini , Samuel Wei-san Yuan
IPC分类号： G11B5/147
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3116 , G11B5/313 , G11B5/3146 , G11B5/3153 , G11B5/3163 , G11B5/3967 , G11B2005/3996
摘要： A magnetic head having improved overwrite capabilities and reduced fringing fields are described along with methods of making the same. The magnetic head has a first pole piece and a second pole piece. The first pole piece includes a first bottom pole piece layer, a pedestal portion formed over the first bottom pole piece layer, and a notched top pole portion formed over the pedestal portion. A gap layer separates the second pole piece from the notched top pole portion. The pedestal portion has a first saturation magnetization MS1 and the top pole portion has a second saturation magnetization MS2 that is greater than the first saturation magnetization MS1. The top pole portion has a substantially planar top surface over which a portion of the gap layer and the second pole piece are formed.
摘要翻译：具有改进的覆盖能力和降低的边缘场的磁头与其制造方法一起被描述。磁头具有第一极靴和第二极靴。第一极靴包括第一底极片层，形成在第一底极片层上的基座部分和形成在基座部分上的切口顶部极片。间隙层将第二极靴与切口的顶部极部分离开。基座部分具有第一饱和磁化强度M S1，并且顶极部分具有大于第一饱和磁化强度M S1的第二饱和磁化强度M S2 S2， / SUB>。顶极部分具有大致平坦的顶表面，间隙层和第二极片的一部分形成在顶面上。

2. 发明授权

US06989964B2 Magnetic head having a pole piece with a double pedestal structure 失效
标题翻译：磁头具有带双底座结构的极片
公开(公告)号：US06989964B2
公开(公告)日：2006-01-24
申请号：US10462535
申请日：2003-06-16
申请人： Yimin Hsu , Gautam Mohan Khera , Yong Shen
发明人： Yimin Hsu , Gautam Mohan Khera , Yong Shen
IPC分类号： G11B5/147
CPC分类号： G11B5/3116
摘要： A magnetic head which includes a pole piece with a double pedestal structure has improved overwrite capabilities and reduced fringing fields. The magnetic head has first and second pole pieces and a gap layer which separates the first and the second pole pieces. The first pole piece includes a first pole piece layer, a bottom pedestal portion formed over the first pole piece layer at an air bearing surface (ABS), and a top pedestal portion formed over the bottom pedestal portion. The top pedestal portion has a thickness that is no more than half of that of the bottom pedestal portion and a length that is no more than half of that of the bottom pedestal portion. Advantageously, a throat height of the magnetic head is reduced from use of the top pedestal portion whereas the mechanical reliability of the first pole piece is increased from use of the bottom pedestal portion.
摘要翻译：包括具有双基座结构的极片的磁头具有改进的覆盖能力和减少的边缘场。磁头具有第一和第二极片以及分隔第一和第二极片的间隙层。第一极靴包括第一极靴层，在空气轴承表面（ABS）上形成在第一极靴层上的底座部分，以及形成在底部底座部分上的顶部底座部分。顶部基座部分的厚度不大于底部底座部分的一半的厚度，并且其长度不超过底部基座部分的一半的长度。有利地，磁头的喉部高度从使用顶部底座部分减小，而第一极靴的机械可靠性从使用底座部分增加。

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