公开(公告)号：US11769526B1

公开(公告)日：2023-09-26

申请号：US17820188

申请日：2022-08-16

Applicant: Seagate Technology LLC

Inventor： Yichun Fan ,  Javier Ignacio Guzman ,  Ali Ghoreyshi ,  Wei-Heng Hsu ,  Pin-Wei Huang

IPC: G11B5/733 ,  G11B5/00

CPC classification number: G11B5/733 ,  G11B2005/0021

Abstract: Magnetic recording media with a thermal spin injection layer that induces a spin injection in a magnetic recording layer in response to a thermal gradient in the thermal spin injection layer. The thermal spin injection layer may comprise an antiferromagnetic, a ferromagnetic, or a ferrimagnetic material that demonstrates a Spin Seebeck effect. In turn, when heating the magnetic recording media (e.g., with a near field transducer of a HAMR drive), the thermal gradient may be established in the thermal spin injection layer. A resulting spin torque field may assist in switching a magnetic domain in the magnetic recording layer by providing an assistive field to at least initiate switching of the magnetic domain. In turn, more reliable or efficient operation of a storage drive comprising the magnetic recording media may be realized.