公开(公告)号：US06549370B1

公开(公告)日：2003-04-15

申请号：US09714488

申请日：2000-11-17

申请人： Akifumi Kamijima

发明人： Akifumi Kamijima

IPC分类号： G11B547

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996

摘要： A recording head incorporates a bottom pole layer including a pole portion and a top pole layer including a pole portion, and a recording gap layer placed between the pole portions. The recording head further incorporates a thin-film coil placed between the bottom and top pole layers, the coil being insulated from the pole layers. The bottom pole layer includes the pole portion, a flat portion and a sloped portion. The pole portion touches the recording gap layer. The sloped portion connects the pole portion and the flat portion to each other. The distance from the sloped portion to the gap layer decreases as the distance from the air bearing surface decreases. The shapes of the pole portion and the sloped portion are defined by a convexity forming layer formed on a top shield layer of a reproducing head. The top pole layer is formed on a flat top surface of the gap layer.

摘要翻译： 记录头包括包括极部分的底极层和包括极部分的顶极层，以及放置在极部之间的记录间隙层。 记录头还包括放置在底极和顶极层之间的薄膜线圈，线圈与极层绝缘。 底极层包括极部，平坦部和倾斜部。 磁极部分接触记录间隙层。 倾斜部分将极部分和平坦部分彼此连接。 随着距离空气轴承表面的距离减小，从倾斜部分到间隙层的距离减小。 极部分和倾斜部分的形状由形成在再现头的顶部屏蔽层上的凸起形成层限定。 顶极层形成在间隙层的平坦顶表面上。

公开(公告)号：US06490125B1

公开(公告)日：2002-12-03

申请号：US09289692

申请日：1999-04-09

申请人： Ronald A. Barr

发明人： Ronald A. Barr

IPC分类号： G11B547

CPC分类号： G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/3163

摘要： The present invention provides an write head having an improved upper pole tip-to-yoke stitch. The upper pole tip is formed having an open faced sloping surface at an end of the pole tip distal from an air bearing surface. Preferably the angle of the sloping surface is about 30 degrees. The sloping surface provides a shallow angle for depositing the yoke material over which improves the magnetic properties of the yoke material, particularly in the case of sputtered high moment magnetic materials, and improves the flux flow path through the yoke. As such, the present invention allows conductor coils to be located closer to the air bearing surface without sacrificing yoke material properties and flux flow. The upper pole tip may have a back portion which is formed over an insulation layer located between a write gap layer and a conductor layer. Preferably the insulation layer and the conductor layer or layers are formed having sloping edges with shallow angles of about 30 degrees. An advantage of the present invention is that it allows the yoke and the yoke-to-pole tip stitch to be recessed from the air bearing surface, if desired, to prevent the yoke or yoke-to-pole stitch from inadvertently writing to the media.

摘要翻译： 本发明提供了一种具有改进的上极尖端到轭形线圈的写入头。 上极端部形成为在远离空气支承表面的极尖端部处具有敞开的倾斜表面。 优选地，倾斜表面的角度为约30度。 倾斜表面提供了一个浅角度，用于沉积磁轭材料，在其上提高了磁轭材料的磁性能，特别是在溅射的高力矩磁性材料的情况下，并改善了通过磁轭的磁通流动路径。 因此，本发明允许导体线圈更靠近空气轴承表面定位，而不牺牲轭材料性质和通量流动。 上极端可以具有形成在位于写间隙层和导体层之间的绝缘层之上的后部。 优选地，绝缘层和导体层形成为具有约30度的浅角度的倾斜边缘。 本发明的一个优点是，如果需要，它允许轭和轭对极尖端针脚从空气支承表面凹入，以防止轭或轭对线针头无意地写入介质 。

公开(公告)号：US06795272B2

公开(公告)日：2004-09-21

申请号：US10217451

申请日：2002-08-14

申请人： Kazue Kudo ,  Yasuyuki Okada ,  Moriaki Fuyama ,  Yohji Maruyama ,  Gen Oikawa

发明人： Kazue Kudo ,  Yasuyuki Okada ,  Moriaki Fuyama ,  Yohji Maruyama ,  Gen Oikawa

IPC分类号： G11B547

CPC分类号： G11B5/313 ,  G11B5/3109 ,  G11B5/3146 ,  G11B5/3163 ,  Y10T29/49032

摘要： A thin film magnetic head includes a lower magnetic pole, an upper magnetic pole provided so as to face the lower magnetic pole, and a magnetic gap layer provided between the lower magnetic pole and the upper magnetic pole. The upper magnetic pole constitutes a first magnetic layer formed on a side facing the magnetic gap layer by means of sputtering and a second magnetic layer formed on the first magnetic layer by means of plating, in which the saturation magnetic flux density of the first magnetic layer is set higher than that of the second magnetic layer. The thin film magnetic head composed as above is capable of generating a stronger magnetic field owing to its stably-formed magnetic core, thereby recording on a high-coercivity medium and high-density recording are made possible.

摘要翻译： 薄膜磁头包括下磁极，设置成面对下磁极的上磁极和设置在下磁极和上磁极之间的磁隙层。 上磁极构成通过溅射形成在面对磁隙层的一侧的第一磁性层，以及通过电镀形成在第一磁性层上的第二磁性层，其中第一磁性层的饱和磁通密度 被设定为高于第二磁性层的高度。 如上构成的薄膜磁头由于其稳定形成的磁芯而能够产生更强的磁场，从而在高矫顽力介质上进行记录和高密度记录。