公开(公告)号：US09640203B1

公开(公告)日：2017-05-02

申请号：US15051083

申请日：2016-02-23

Applicant: Seagate Technology LLC

Inventor： Bruce Douglas Buch ,  Kim Yang Lee ,  Ning Li

IPC: G11B5/09 ,  G11B5/39 ,  G11B5/00

CPC classification number: G11B5/02 ,  G11B5/3146 ,  G11B5/743 ,  G11B5/82 ,  G11B2005/0024

Abstract: An apparatus comprises a recording transducer configured for microwave-assisted magnetic recording (MAMR) and a magnetic recording medium. The recording transducer comprises a write pole configured to generate a write magnetic field and a write-assist arrangement proximate the write pole. The write-assist arrangement is configured to generate a radio frequency assist magnetic field at a plurality of different frequencies. The magnetic recording medium comprises a plurality of tracks, wherein adjacent tracks of the medium have different ferromagnetic resonant frequencies.