公开(公告)号：US6038110A

公开(公告)日：2000-03-14

申请号：US762826

申请日：1996-12-06

申请人： Joseph Adam Aboaf ,  Thomas Beaulieu ,  Vincent Noel Kahwaty, deceased ,  Mohamad Towfik Krounbi ,  David John Seagle

发明人： Joseph Adam Aboaf ,  Thomas Beaulieu ,  Vincent Noel Kahwaty, deceased ,  Mohamad Towfik Krounbi ,  David John Seagle

IPC分类号： G11B5/008 ,  G11B5/31 ,  G11B5/127 ,  G11B5/147

CPC分类号： G11B5/3109 ,  G11B5/00813 ,  G11B5/3146 ,  G11B5/3163 ,  Y10T29/49044

摘要： A thin-film magnetic head includes a substrate having first and second magnetic layers disposed above the substrate and formed as a laminated sequence of magnetic sub-layers. The first and second magnetic layers have corresponding first ends representing a pole tip region of the head, corresponding second ends representing a back gap region of the head, and corresponding intermediate portions representing an intermediate region of the head between the pole tip region and the back gap region. The first and second magnetic layers are joined together in physical contact at the back gap region and are spaced from one another at the pole tip region and at the intermediate region. A nonmagnetic gap layer is disposed between the first and second magnetic layers at the pole tip region. A magnetic coil structure is disposed between the first and second magnetic layers at the intermediate region. The second magnetic layer has a sloped region wherein the second magnetic layer slopes away from the first magnetic layer behind the pole tip region to form a space for the magnetic coil structure. The sloped region of the second magnetic layer may have less magnetic permeability than other portions of the second magnetic layer. A third magnetic layer is thus disposed on the second magnetic layer and extends from the back gap region to cover at least the sloped region of the second magnetic layer.

摘要翻译： 薄膜磁头包括具有设置在基板上方的第一和第二磁性层并形成为磁性子层的层叠序列的基板。 第一和第二磁性层具有相应的第一端表示头部的极尖区域，对应的第二端表示头部的后部间隙区域，以及相应的中间部分，表示头部区域和背部之间的中间区域 间隙区域。 第一和第二磁性层在后隙区域处物理接触地接合在一起，并且在极尖区域和中间区域处彼此间隔开。 非磁性间隙层设置在极尖区域的第一和第二磁性层之间。 磁性线圈结构设置在中间区域的第一和第二磁性层之间。 所述第二磁性层具有倾斜区域，其中所述第二磁性层在所述极尖区域的后方倾斜离开所述第一磁性层，以形成用于所述磁性线圈结构的空间。 第二磁性层的倾斜区域的磁导率可以比第二磁性层的其它部分低。 因此，第三磁性层被布置在第二磁性层上，并且从后间隙区域延伸至至少覆盖第二磁性层的倾斜区域。