公开(公告)号：US20250087236A1

公开(公告)日：2025-03-13

申请号：US18960779

申请日：2024-11-26

Applicant: Western Digital Technologies, Inc.

Inventor： Muhammad Asif BASHIR ,  Alexander GONCHAROV ,  Zhigang BAI ,  Masato SHIIMOTO ,  Yunfei DING

IPC: G11B5/31 ,  G11B5/00 ,  G11B5/127 ,  G11B5/235

Abstract: The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head. The magnetic recording head comprises a main pole, a shield, and a spintronic device disposed between the main pole and the shield. The spintronic device comprises two field generation layers (FGLs), two spin polarization layers (SPLs), and two spin kill layers. The spintronic device further comprises one or more optional thin negative beta material layers, such as layers comprising FeCr, disposed in contact with at least one of the spin kill layers. When electric current is applied, the spin kill layers and optional negative beta material layers eliminate or reduce any spin torque between the FGLs and the SPLs.

公开(公告)号：US20200118586A1

公开(公告)日：2020-04-16

申请号：US16157233

申请日：2018-10-11

Applicant: Western Digital Technologies, Inc.

Inventor： Muhammad Asif BASHIR ,  Petrus Antonius VAN DER HEIJDEN ,  Alexander GONCHAROV ,  Barry STIPE

IPC: G11B5/187 ,  G11B5/265

Abstract: Disclosed herein are magnetic write heads and data storage devices comprising such write heads. A magnetic write head comprises a leading side, a trailing side, an air-bearing surface (ABS), a main pole disposed between the leading side and the trailing side and extending to the ABS, a first return pole disposed between the main pole and the leading side, and a second return pole disposed between the main pole and the trailing side. One or both of the main pole and the second return pole may be tapered.

公开(公告)号：US20200294536A1

公开(公告)日：2020-09-17

申请号：US16946034

申请日：2020-06-03

Applicant: Western Digital Technologies, Inc.

Inventor： Muhammad Asif BASHIR ,  Petrus Antonius VAN DER HEIJDEN ,  Alexander GONCHAROV ,  Barry STIPE

IPC: G11B5/187 ,  G11B5/265 ,  G11B5/31 ,  G11B5/127

Abstract: Disclosed herein are magnetic write heads and methods of designing them, and data storage devices comprising such write heads. A magnetic write head having leading and trailing sides comprises an air-bearing surface (ABS), a main pole between the leading and trailing sides, a first return pole between the main pole and the leading side, at least one optical near-field generator between the first return pole and the main pole, and a second return pole between the main pole and the trailing side. The main pole comprises a first tapered portion comprising a leading-side edge perpendicular to the ABS, a first trailing-side edge at a first angle to the ABS, and a second trailing-side edge recessed from the ABS and at a second angle to the ABS. The second return pole comprises a second tapered portion adjacent to the ABS and extending toward the main pole.