Variation of blocking temperatures for exchange biased CoO/Co/Ge(100) films

Cheng Hsun Tony Chang, Shin Chen Chang, Jyh Shen Tsay, Yeong Der Yao

研究成果: 雜誌貢獻期刊論文同行評審

5 引文 斯高帕斯(Scopus)

摘要

Variations of the blocking temperature and related structures for CoO/Co/Ge(100) films are investigated by employing reflection high energy electron diffraction, Auger electron spectroscopy, and surface magneto-optic Kerr effect measurements. By increasing the CoO thickness, the blocking temperature is smaller than the Neel temperature of CoO. The monotonous increase of the blocking temperature is mainly attributed to the increasing thermal stability of the antiferromagnetic grains by way of increasing the antiferromagnetic thickness. The deviation of the blocking temperature from the linear relation and the full widths at half maximum of the diffraction spots show a similar trend. The minimums appear around 25 monolayer of CoO and are related to the formation of larger grains.

原文英語
文章編號056101
期刊AIP Advances
6
發行號5
DOIs
出版狀態已發佈 - 2016 五月 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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