公开(公告)号：US20190279663A1

公开(公告)日：2019-09-12

申请号：US16009046

申请日：2018-06-14

Applicant: Western Digital Technologies, Inc.

Inventor： Suping SONG ,  Zhanjie LI ,  Michael Kuok San HO ,  Quang LE ,  Alexander M. ZELTSER

IPC: G11B5/127 ,  G11B5/23 ,  G11B5/31

Abstract: The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a main pole at a media facing surface (MFS), a trailing shield at the MFS, and a heavy metal layer disposed between the main pole and the trailing shield at the MFS. Spin-orbit torque (SOT) is generated from the heavy metal layer and transferred to a surface of the main pole as a current passes through the heavy metal layer in a cross-track direction. The SOT executes a torque on the surface magnetization of the main pole, which reduces the magnetic flux shunting from the main pole to the trailing shield. With the reduced magnetic flux shunting from the main pole to the trailing shield, write-ability is improved.

公开(公告)号：US20190251991A1

公开(公告)日：2019-08-15

申请号：US16277830

申请日：2019-02-15

Applicant: Western Digital Technologies, Inc.

Inventor： Quang LE ,  Hongquan JIANG ,  Michael Kuok San HO

IPC: G11B5/40 ,  G11B5/39

CPC classification number: G11B5/40 ,  G11B5/3912 ,  G11B2005/0024

Abstract: The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a trailing shield, a main pole, side shields surrounding at least a portion of the main pole, and a structure disposed between the trailing shield and the main pole. The structure includes one or more layers and a seed layer. The seed layer is connected to one or more electrical leads to provide an electrical path from the leads to the one or more layers during operation. The seed layer guides the electrical current to the one or more layers and improves heat dissipation of the one or more layers, leading to a reduction in hot spots formed in the one or more layers.