Correlation between exchange bias field and domain size of ferromagnetic layer in Mn-Ir/Co-Fe bilayers

Hirokazu Takahashi, Masakiyo Tsunoda, Keiki Fukumoto, Tetsuya Nakamura, Kuniaki Arai, Toyohiko Kinoshita, Migaku Takahashi

研究成果: Article査読

3 被引用数 (Scopus)

抄録

In order to clarify the correlation between the exchange bias strength and magnetic domain structure in ferromagnetic/antiferromagnetic (AF) bilayers, ferromagnetic domain structure was observed at Co- L3 edge for polycrystalline Mn-Ir/Co-Fe bilayers by using the x-ray magnetic circular dichroism photoelectron emission microscopy technique. From the observation for four different samples prepared with the respective thermal annealing procedures, a positive correlation was found between the strength of exchange bias field and the ferromagnetic domain size. Within the framework of single spin ensemble model, it was indicated that the larger size of AF domain, which means small distribution of fixing direction of AF spins, can induce the larger exchange bias field.

本文言語English
論文番号07D720
ジャーナルJournal of Applied Physics
105
7
DOI
出版ステータスPublished - 2009

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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