Analysis of Magnetic Relaxation with Pre-Existing Nucleation Sites Based on the Fatuzzo-Labrune Model

Duy Truong Quach, Djati Handoko, Sang Hyuk Lee, Je Ho Shim, The Long Phan, Duc Thang Pham, Kyung Min Lee, Jong Ryul Jeong, Duc The Ngo, Dong Hyun Kim

Research output: Contribution to journalArticlepeer-review

Abstract

Time-resolved magnetic domain patterns of (Co/Pt) and (CoFeB/Pd) multi-layers with a perpendicular magnetic anisotropy are observed by means of magneto-optical microscopy, from which magnetic relaxation curves are determined via a quantitative image analysis. Interestingly, it has been observed that the relaxation processes starting with pre-existing nucleation sites, as well as starting from a fully saturated state, are well explained based on the Fatuzzo-Labrune model, although the pre-existing nucleation sites significantly modify the magnetization reversal behaviors.

Original languageEnglish
Article number7120979
JournalIEEE Transactions on Magnetics
Volume51
Issue number11
DOIs
Publication statusPublished - 1 Nov 2015

Keywords

  • Fatuzzo-Labrune model
  • magnetization reversal mechanism
  • pre-existing nucleation sites
  • relaxation process

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