Robust magnetic domain of Pt/Co/Au/Cr2O3/Pt stacked films with a perpendicular exchange bias

Yu Shiratsuchi, Saori Yoshida, Hiroaki Yoshida, Yoshinori Kotani, Kentaro Toyoki, Ryoichi Nakatani, Chiharu Mitsumata, Tetsuya Nakamura

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Magnetic domain pattern and magnetic domain wall motion are particularly important to understand the magnetization process. Here, we investigated the magnetization process of perpendicularly exchange-biased Pt/Co/Au/Cr2O3/Pt stacked films based on observations of the magnetic domain. In particular, in contrast to previous studies which use fully exchange-biased state, we used the bi-exchange-biased state. We found that the magnetic domain pattern at the remanent state was robust against magnetic-field cycling, which is relevant to the absence of the training effect. The magnetization process was followed by domain wall propagation in the increasing branch of the magnetization curve. In the decreasing branch, both nucleation of the reversed domain and domain wall propagation were involved. The former was accompanied by latency, suggesting that thermal activation played a significant role in the nucleation of the reversed domain.

Original languageEnglish
Article number153902
JournalJournal of Applied Physics
Volume127
Issue number15
DOIs
Publication statusPublished - 2020 Apr 21
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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