A Study of TDMR signal processing opportunities based on quasi-micromagnetic simulations

Bane Vasic, Mehrdad Khatami, Yasuaki Nakamura, Yoshihiro Okamoto, Yasushi Kanai, John R. Barry, Steven W. McLaughlin, Elnaz Banan Sadeghian

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

This paper presents the results of a comprehensive study of the shingled writing process and various signal processing and data detection approaches applied to the readback waveforms. The recording simulations include realistic head fields, a random granular media, magnetostatic and exchange interactions, and a READ head sensitivity function. Readback waveforms are examined in both one and two dimensions in terms of signal characteristics (linear and nonlinear), noise behavior (stationary and signal-dependent), and intertrack interference. Different equalization and detection approaches are compared and about a 10% density gain is reported for such 2-D magnetic recording compared with traditional single-track recording. These gains depend strongly on the number of readers, the reader positioning, and the reader width.

Original languageEnglish (US)
Article number7109973
JournalIEEE Transactions on Magnetics
Volume51
Issue number4
DOIs
StatePublished - Apr 1 2015

ASJC Scopus subject areas

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

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    Vasic, B., Khatami, M., Nakamura, Y., Okamoto, Y., Kanai, Y., Barry, J. R., McLaughlin, S. W., & Sadeghian, E. B. (2015). A Study of TDMR signal processing opportunities based on quasi-micromagnetic simulations. IEEE Transactions on Magnetics, 51(4), [7109973]. https://doi.org/10.1109/TMAG.2014.2356455