专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20070253105A1 Thin film magnetic head and fabrication process 失效
标题翻译：薄膜磁头和制造工艺
公开(公告)号：US20070253105A1
公开(公告)日：2007-11-01
申请号：US11786458
申请日：2007-04-10
申请人： Nubuo Yoshida , Katsuro Watanabe , Takayoshi Ohtsu
发明人： Nubuo Yoshida , Katsuro Watanabe , Takayoshi Ohtsu
IPC分类号： G11B5/147 , G11B5/127
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3163 , G11B5/3929 , G11B2005/3996 , H01F41/34 , Y10T29/49021
摘要： Embodiments in accordance with the present invention provide a thin film magnetic head for preventing a short-circuit failure during formation of a track portion or a stripe-height portion and improving a yield. In one embodiment, a stripe-height direction is first formed, and then a track-width direction is formed. A third insulating film having a smoothly shaped wall surface is formed on a first insulating film during stripe-height formation. During formation of the third insulating film, an optimized lift-off pattern is used to smooth an edge shape.
摘要翻译：根据本发明的实施例提供了一种薄膜磁头，用于防止在形成轨道部分或条纹高度部分期间发生短路故障并提高产量。在一个实施例中，首先形成条纹高度方向，然后形成轨道宽度方向。在条纹高度形成期间，在第一绝缘膜上形成具有平滑形状的壁表面的第三绝缘膜。在第三绝缘膜的形成期间，使用优化的剥离图案来平滑边缘形状。

2. 发明申请

US20090262465A1 Magnetic head and manufacturing method thereof 有权
标题翻译：磁头及其制造方法
公开(公告)号：US20090262465A1
公开(公告)日：2009-10-22
申请号：US12386458
申请日：2009-04-17
申请人： Masahiko Hatatani , Katsuro Watanabe , Nubuo Yoshida , Katsumi Hoshino
发明人： Masahiko Hatatani , Katsuro Watanabe , Nubuo Yoshida , Katsumi Hoshino
IPC分类号： G11B5/33 , B05D5/12
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B5/3932 , G11B2005/3996
摘要： Embodiments of the present invention provide a magnetic head having a read head of stable reading operation and with less magnetic fluctuation noise. According to one embodiment, a free layer has a structure comprising two ferromagnetic layers (a first free layer and a second free layer) that are coupled anti-ferromagnetically by way of a non-magnetic intermediate layer, in which the magnetization amount of the first free layer is set to larger than the magnetization amount of the second free layer. Further, the magnetic domains in the first free layer and the second free layer are stabilized simultaneously by increasing the distance between the second free layer and the magnetic domain control film to be more than the distance between the first free layer and the magnetic domain control film, thereby adjusting the magnetization amount of the magnetic domain control film. Further, the volume of the entire free layer is increased thereby greatly decreasing the magnetic fluctuation noises, to obtain a read head showing a high SN ratio.
摘要翻译：本发明的实施例提供了一种具有稳定读取操作的读取头并具有较小的磁波动噪声的磁头。根据一个实施例，自由层具有包括通过非磁性中间层反铁磁耦合的两个铁磁层（第一自由层和第二自由层）的结构，其中第一自由层被设定为大于第二自由层的磁化量。此外，第一自由层和第二自由层中的磁畴通过将第二自由层和磁畴控制膜之间的距离增大到第一自由层和磁畴控制膜之间的距离而同时稳定从而调整磁畴控制膜的磁化量。此外，整个自由层的体积增加，从而大大降低磁波动噪声，以获得显示高SN比的读头。

3. 发明授权

US08184406B2 Thin film magnetic head having an angled insulating film 失效
标题翻译：薄膜磁头具有成角度的绝缘膜
公开(公告)号：US08184406B2
公开(公告)日：2012-05-22
申请号：US11786458
申请日：2007-04-10
申请人： Nubuo Yoshida , Katsuro Watanabe , Takayoshi Ohtsu
发明人： Nubuo Yoshida , Katsuro Watanabe , Takayoshi Ohtsu
IPC分类号： G11B5/147 , G11B5/127
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3163 , G11B5/3929 , G11B2005/3996 , H01F41/34 , Y10T29/49021
摘要： Embodiments in accordance with the present invention provide a thin film magnetic head for preventing a short-circuit failure during formation of a track portion or a stripe-height portion and improving a yield. In one embodiment, a stripe-height direction is first formed, and then a track-width direction is formed. A third insulating film having a smoothly shaped wall surface is formed on a first insulating film during stripe-height formation. During formation of the third insulating film, an optimized lift-off pattern is used to smooth an edge shape.
摘要翻译：根据本发明的实施例提供了一种薄膜磁头，用于防止在形成轨道部分或条纹高度部分期间发生短路故障并提高产量。在一个实施例中，首先形成条纹高度方向，然后形成轨道宽度方向。在条纹高度形成期间，在第一绝缘膜上形成具有平滑形状的壁表面的第三绝缘膜。在第三绝缘膜的形成期间，使用优化的剥离图案来平滑边缘形状。

4. 发明授权

US08149548B2 Magnetic head and manufacturing method thereof 有权
标题翻译：磁头及其制造方法
公开(公告)号：US08149548B2
公开(公告)日：2012-04-03
申请号：US12386458
申请日：2009-04-17
申请人： Masahiko Hatatani , Katsuro Watanabe , Nubuo Yoshida , Katsumi Hoshino
发明人： Masahiko Hatatani , Katsuro Watanabe , Nubuo Yoshida , Katsumi Hoshino
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B5/3932 , G11B2005/3996
摘要： Embodiments of the present invention provide a magnetic head having a read head of stable reading operation and with less magnetic fluctuation noise. According to one embodiment, a free layer has a structure comprising two ferromagnetic layers (a first free layer and a second free layer) that are coupled anti-ferromagnetically by way of a non-magnetic intermediate layer, in which the magnetization amount of the first free layer is set to larger than the magnetization amount of the second free layer. Further, the magnetic domains in the first free layer and the second free layer are stabilized simultaneously by increasing the distance between the second free layer and the magnetic domain control film to be more than the distance between the first free layer and the magnetic domain control film, thereby adjusting the magnetization amount of the magnetic domain control film. Further, the volume of the entire free layer is increased thereby greatly decreasing the magnetic fluctuation noises, to obtain a read head showing a high SN ratio.
摘要翻译：本发明的实施例提供了一种具有稳定读取操作的读取头并具有较小的磁波动噪声的磁头。根据一个实施例，自由层具有包括通过非磁性中间层反铁磁耦合的两个铁磁层（第一自由层和第二自由层）的结构，其中第一自由层被设定为大于第二自由层的磁化量。此外，第一自由层和第二自由层中的磁畴通过将第二自由层和磁畴控制膜之间的距离增大到第一自由层和磁畴控制膜之间的距离而同时稳定从而调整磁畴控制膜的磁化量。此外，整个自由层的体积增加，从而大大降低磁波动噪声，以获得显示高SN比的读头。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式