Microwave-Assisted Shingled Magnetic Recording

Simon John Greaves, Yasushi Kanai, Hiroaki Muraoka

Research output: Contribution to journalArticlepeer-review

Abstract

Simulations of shingled, microwave-assisted magnetic recording were carried out. First, a simplified model of the head field near the corner of the main pole of a write head was used to understand the effect of the spin torque oscillator (STO) position relative to the head. Next, shingled tracks were written and evaluated for two different write head and STO geometries. For shingled recording, locating a rotated STO on the side of the main pole may provide some advantages in that medium grains experience the high-frequency (HF) field for a longer time and the chirality of the HF field does not change as the grains pass by the STO. Recording simulations show that the rotated STO writes smoother track edges at lower densities, but there is little difference in signal-to-noise ratio at high linear densities.

Original languageEnglish
Article number7110363
JournalIEEE Transactions on Magnetics
Volume51
Issue number11
DOIs
Publication statusPublished - 2015 Nov 1

Keywords

  • Shingled
  • magnetic recording
  • microwave assist
  • simulation

ASJC Scopus subject areas

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

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