公开(公告)号：US20110235214A1

公开(公告)日：2011-09-29

申请号：US12801518

申请日：2010-06-11

申请人： Chiuming Leung ,  Kosuke Tanaka ,  Kazuki Sato ,  Cheukwing Leung ,  Juren Ding ,  Rongkwang Ni ,  Wanyin Kwan ,  Mankit Lee

发明人： Chiuming Leung ,  Kosuke Tanaka ,  Kazuki Sato ,  Cheukwing Leung ,  Juren Ding ,  Rongkwang Ni ,  Wanyin Kwan ,  Mankit Lee

IPC分类号： G11B5/48 ,  G11B5/33

CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3932

摘要： A MR sensor includes a first shielding layer, a second shielding layer, a MR element formed therebetween, and a pair of hard magnet layers respectively placed on two sides of the MR element. The MR element comprises an AFM layer formed on the first shielding layer, a pinned layer formed on the AFM layer and a free layer formed between the pinned layer and the second shielding layer. The free layer is funnel-shaped, which having a first edge facing the air bearing surface and a second edge opposite the first edge, and the first edge has a narrower width than that of the second edge. The structure of the MR sensor can improve MR height control performance, and improve the ESD performance and decrease the PCN and RTN and, in turn, get a more stable performance. The present invention also discloses a magnetic head, a HGA and a disk drive unit.

摘要翻译： MR传感器包括第一屏蔽层，第二屏蔽层，在其间形成的MR元件和分别放置在MR元件的两侧上的一对硬磁体层。 MR元件包括形成在第一屏蔽层上的AFM层，形成在AFM层上的钉扎层和形成在钉扎层和第二屏蔽层之间的自由层。 自由层是漏斗形的，其具有面向空气支承表面的第一边缘和与第一边缘相对的第二边缘，并且第一边缘具有比第二边缘窄的宽度。 MR传感器的结构可以提高MR高度控制性能，提高ESD性能，减少PCN和RTN，进而获得更稳定的性能。 本发明还公开了一种磁头，HGA和盘驱动单元。

公开(公告)号：US08767356B2

公开(公告)日：2014-07-01

申请号：US12801518

申请日：2010-06-11

申请人： Chiuming Leung ,  Kosuke Tanaka ,  Kazuki Sato ,  Cheukwing Leung ,  Juren Ding ,  Rongkwang Ni ,  Wanyin Kwan ,  Mankit Lee

发明人： Chiuming Leung ,  Kosuke Tanaka ,  Kazuki Sato ,  Cheukwing Leung ,  Juren Ding ,  Rongkwang Ni ,  Wanyin Kwan ,  Mankit Lee

IPC分类号： G11B5/39

CPC分类号： G11B5/398 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3932

摘要： An MR sensor includes a first shielding layer, a second shielding layer, an MR element formed therebetween, and a pair of hard magnet layers respectively placed on two sides of the MR element. The MR element includes an AFM layer formed on the first shielding layer, a pinned layer formed on the AFM layer and a free layer formed between the pinned layer and the second shielding layer. The free layer is funnel-shaped, which has a first edge facing an air bearing surface and a second edge opposite the first edge, and the first edge has a narrower width than that of the second edge. The MR sensor can improve MR height control performance, and improve the ESD performance and decrease the PCN and RTN and, in turn, get a more stable performance. The present invention also discloses a magnetic head, an HGA and a disk drive unit.

摘要翻译： MR传感器包括第一屏蔽层，第二屏蔽层，在其间形成的MR元件和分别放置在MR元件的两侧上的一对硬磁体层。 MR元件包括形成在第一屏蔽层上的AFM层，形成在AFM层上的钉扎层和形成在被钉扎层和第二屏蔽层之间的自由层。 自由层是漏斗形的，其具有面向空气轴承表面的第一边缘和与第一边缘相对的第二边缘，并且第一边缘具有比第二边缘窄的宽度。 MR传感器可以提高MR高度控制性能，提高ESD性能，减少PCN和RTN，进而获得更稳定的性能。 本发明还公开了一种磁头，HGA和盘驱动单元。