公开(公告)号：US10249335B2

公开(公告)日：2019-04-02

申请号：US15713023

申请日：2017-09-22

Applicant: Seagate Technology LLC

Inventor： Randall Victora ,  Zengyuan Liu ,  Pin-wei Huang ,  Ganping Ju ,  Jan-Ulrich Thiele

IPC: G11B5/66 ,  G11B17/028 ,  G11B5/65 ,  G11B5/012 ,  G11B5/127 ,  G11B5/00

Abstract: A heat-assisted magnetic recording media structure with exchange-coupled composite layer structure may be utilized in a data storage device. The heat-assisted magnetic recording disk structure can have a FePt-based layer as a storage layer and a FePt-based or a CoPt-based magnetic layer with higher Curie temperature as a write layer. The interface between the write layer and the storage layer may be separated by an exchange control layer. The composite structure can be optimized to reduce jitter for high density data storage by tuning the exchange coupling between the write layer and storage layer.

公开(公告)号：US20180082713A1

公开(公告)日：2018-03-22

申请号：US15713023

申请日：2017-09-22

Applicant: Seagate Technology LLC

Inventor： Randall Victora ,  Zengyuan Liu ,  Pin-wei Huang ,  Ganping Ju ,  Jan-Ulrich Thiele

IPC: G11B17/028 ,  G11B5/66 ,  G11B5/65

CPC classification number: G11B5/66 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/65 ,  G11B17/028 ,  G11B2005/0021 ,  G11B2220/23

Abstract: A heat-assisted magnetic recording media structure with exchange-coupled composite layer structure may be utilized in a data storage device. The heat-assisted magnetic recording disk structure can have a FePt-based layer as a storage layer and a FePt-based or a CoPt-based magnetic layer with higher Curie temperature as a write layer. The interface between the write layer and the storage layer may be separated by an exchange control layer. The composite structure can be optimized to reduce jitter for high density data storage by tuning the exchange coupling between the write layer and storage layer.