公开(公告)号：US20240282333A1

公开(公告)日：2024-08-22

申请号：US18637904

申请日：2024-04-17

Applicant: Western Digital Technologies, Inc.

Inventor： Ning SHI ,  Brian R. YORK ,  Susumu OKAMURA ,  Suping SONG

IPC: G11B5/39

CPC classification number: G11B5/3929 ,  G11B5/3912

Abstract: Aspects of the present disclosure generally relate to magnetic recording heads (such as write heads of data storage devices) that include multilayer structures to facilitate targeted switching and relatively low coercivity. In one or more embodiments, a magnetic recording head includes an iron-cobalt (FeCo) layer having a crystalline structure that is a cubic lattice structure, a first crystalline layer formed of a first material, and a second crystalline layer between the first crystalline layer and the FeCo layer. The second crystalline layer is formed of a second material different from the first material, and the second crystalline layer interfaces both the FeCo layer and the first crystalline layer. The crystalline structure of the FeCo layer has a texture of .

公开(公告)号：US20190259413A1

公开(公告)日：2019-08-22

申请号：US16276508

申请日：2019-02-14

Applicant: Western Digital Technologies, Inc.

Inventor： Quang LE ,  Hongquan JIANG ,  Ning SHI ,  Alexander M. ZELTSER

IPC: G11B5/31 ,  G11B5/66

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, a MAMR stack disposed between the trailing shield and the main pole, side shields surrounding at least a portion of the main pole, and a structure disposed between the side shields and the main pole at a media facing surface (WS). The structure is fabricated from a material that is thermally conductive and electrically insulating/dissipative. The material has a thermal conductivity of at least 50 W/(m*K) and an electrical resistivity of at least 105 Ω*m. The structure helps dissipate joule heating generated from either the main pole or the MAMR stack into surrounding area without electrical shunting, leading to reduced heating or break-down induced failures.

公开(公告)号：US20240005951A1

公开(公告)日：2024-01-04

申请号：US17854617

申请日：2022-06-30

Applicant: Western Digital Technologies, Inc.

Inventor： Ning SHI ,  Brian R. YORK ,  Susumu OKAMURA ,  Suping SONG

IPC: G11B5/39

CPC classification number: G11B5/3929 ,  G11B5/3912

Abstract: Aspects of the present disclosure generally relate to magnetic recording heads (such as write heads of data storage devices) that include multilayer structures to facilitate targeted switching and relatively low coercivity. In one or more embodiments, a magnetic recording head includes an iron-cobalt (FeCo) layer having a crystalline structure that is a cubic lattice structure, a first crystalline layer formed of a first material, and a second crystalline layer between the first crystalline layer and the FeCo layer. The second crystalline layer is formed of a second material different from the first material, and the second crystalline layer interfaces both the FeCo layer and the first crystalline layer. The crystalline structure of the FeCo layer has a texture of .

公开(公告)号：US20200227075A1

公开(公告)日：2020-07-16

申请号：US16828901

申请日：2020-03-24

Applicant: Western Digital Technologies, Inc.

Inventor： Quang LE ,  Hongquan JIANG ,  Ning SHI ,  Alexander M. ZELTSER

IPC: G11B5/31 ,  G11B5/66 ,  G11B5/73

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, a MAMR stack disposed between the trailing shield and the main pole, side shields surrounding at least a portion of the main pole, and a structure disposed between the side shields and the main pole at a media facing surface (MFS). The structure is fabricated from a material that is thermally conductive and electrically insulating/dissipative. The material has a thermal conductivity of at least 50 W/(m*K) and an electrical resistivity of at least 105 Ω*m. The structure helps dissipate joule heating generated from either the main pole or the MAMR stack into surrounding area without electrical shunting, leading to reduced heating or break-down induced failures.