Areal Density Prediction for Microwave-Assisted Magnetic Recording

K. K. Teo, K. S. Chan, S. J. Greaves, Yasushi Kanai

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In this paper, we perform an estimate of the areal density achievable for microwave-assisted magnetic recording (MAMR) using micromagnetic simulations ( μ-mag), the grain-flipping probability (GFP) model, and a software recording channel simulation platform. In previous work, at Tohoku, micromagnetic simulations were run for the MAMR based on various grain sizes and bit lengths in a shingled magnetic recording scheme on single-layer recording media with high anisotropy energy. The micromagnetic outputs are subsequently used to characterize the GFP model and run low-density parity check coded channel simulations at the DSI. The channel simulations determine the code rate needed to make the MAMR work from which the user areal density for shingled MAMR can be determined. This system-level study gives us insight into the impact the error rates and the signal-to-noise ratio have on the areal density for the MAMR.

Original languageEnglish
Article number7147805
JournalIEEE Transactions on Magnetics
Volume51
Issue number11
DOIs
Publication statusPublished - 2015 Nov 1

Keywords

  • Areal Density
  • Grain Flipping Probability (GFP)
  • Micromagnetic simulations
  • Microwave Assisted Magnetic Recording (MAMR)

ASJC Scopus subject areas

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

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