公开(公告)号：US09171555B2

公开(公告)日：2015-10-27

申请号：US14615940

申请日：2015-02-06

Applicant: Seagate Technology LLC

Inventor： Eric Meloche ,  Bin Lu ,  Lixin Jia ,  Jianhua Xue ,  John David Westwood ,  Mark Anthony Gubbins ,  Alexandru Cazacu

IPC: G11B5/33 ,  G11B5/11 ,  G11B5/127 ,  G11B5/31

CPC classification number: G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.

公开(公告)号：US20140177083A1

公开(公告)日：2014-06-26

申请号：US13722724

申请日：2012-12-20

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Kevin Richard Heim ,  Kirill A. Rivkin ,  Eric Meloche ,  John Wolf

IPC: G11B5/09

CPC classification number: G11B5/012 ,  G11B5/02 ,  G11B5/3123

Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.

Abstract translation: 具有两个单独驱动的写入线圈的写入器组件允许由写入器组件生成的组合写入字段对于特定应用进行精细转换和优化。 为了单独驱动写入线圈，可以将两个前置放大器并入到印刷电路板中。 在其他实现中，可以存在多于两个的写入线圈和相应的前置放大器。

公开(公告)号：US20150154985A1

公开(公告)日：2015-06-04

申请号：US14615940

申请日：2015-02-06

Applicant: Seagate Technology LLC

Inventor： Eric Meloche ,  Bin Lu ,  Lixin Jia ,  Jianhua Xue ,  John David Westwood ,  Mark Anthony Gubbins ,  Alexandru Cazacu

IPC: G11B5/11

CPC classification number: G11B5/11 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

Abstract: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.

Abstract translation: 提供了具有可能减少擦除通量并增加写入能力的障碍的数据存储系统。 数据存储系统包括写入元件。 写入元件具有带闪光区域的写入极。 磁通势垒位于写磁极耀斑区域。 磁通势垒示意性地由具有易磁化平面的面内磁各向异性材料制成。 在另一个实施例中，数据存储系统包括具有空气轴承表面和在空气支承表面处的屏蔽的书写元件。 屏蔽具有大约零的磁导率。 屏蔽件示例性地包括正和负磁导率的交替层。 屏蔽件可选地包括可以包括顶部，底部和侧部屏蔽件的多个屏蔽件。

公开(公告)号：US08947807B2

公开(公告)日：2015-02-03

申请号：US13722724

申请日：2012-12-20

Applicant: Seagate Technology LLC

Inventor： Kevin Richard Heim ,  Kirill A. Rivkin ,  Eric Meloche ,  John Wolf

IPC: G11B5/09 ,  G11B5/127 ,  G11B5/012 ,  G11B5/02 ,  G11B5/31

CPC classification number: G11B5/012 ,  G11B5/02 ,  G11B5/3123

Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.

Abstract translation: 具有两个单独驱动的写入线圈的写入器组件允许由写入器组件生成的组合写入字段对于特定应用进行精细转换和优化。 为了单独驱动写入线圈，可以将两个前置放大器并入到印刷电路板中。 在其他实现中，可以存在多于两个的写入线圈和相应的前置放大器。