Model analysis of tilted spin-torque oscillator with magnetic write head for shingled microwave-assisted magnetic recording

Takuto Katayama, Yasushi Kanai, Kazuetsu Yoshida, Simon J. Greaves, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A model analysis was used to investigate a spin-transfer torque oscillator (STO) and magnetic write head for shingled microwave-assisted magnetic recording, where the interactions between STO and write head were included. The magnetic head had a tilted main pole (MP)-trailing shield (TS) gap with respect to the medium surface. The STO was placed in the tilted gap and off-center with respect to the MP center axis. The head structure allowed stable STO oscillation due to the lower in-plane field on the STO and large magnetic head field and high field gradient in the cross-track direction due to the wide pole. An off-centered STO in the MP-TS tilted gap had a stable oscillation at the cost of a slight reduction in oscillation amplitude.

Original languageEnglish
Article number6971780
JournalIEEE Transactions on Magnetics
Volume50
Issue number11
DOIs
Publication statusPublished - 2014 Nov 1

Keywords

  • Micromagnetic simulation
  • microwave-assisted magnetic recording
  • shingled recording
  • tilted spin torque oscillator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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