Invention Grant
- Patent Title: Microwave-assisted magnetic recording apparatus and method
-
Application No.: US16524544Application Date: 2019-07-29
-
Publication No.: US10755736B2Publication Date: 2020-08-25
- Inventor: Xiong Liu , Lihong Zhang , PengBoon Khoo
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Fremont
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Fremont
- Agency: Mueting Raasch Group
- Main IPC: G11B5/00
- IPC: G11B5/00 ; G11B5/596 ; G11B20/10 ; G11B20/12 ; G11B5/66

Abstract:
A magnetic recording medium includes a recording surface comprising a first recording layer having a first ferromagnetic resonant frequency and a second recording layer having a second ferromagnetic resonant frequency. The first recording layer is configured for storing user data and the second recording layer configured for storing servo data. A recording head arrangement is configured for microwave-assisted magnetic recording (MAMR) and writing user data to the first recording layer. The recording head arrangement 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 radiofrequency assist magnetic field at a frequency that corresponds to the first ferromagnetic resonant frequency. A reader of the recording head arrangement is configured to read combined signals from the first and second recording layers.
Public/Granted literature
- US20190392862A1 MICROWAVE-ASSISTED MAGNETIC RECORDING APPARATUS AND METHOD Public/Granted day:2019-12-26
Information query