Pinning of magnetic moments at the interfacial region of ultrathin CoO/Co bilayers grown on Ge(1 0 0)

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

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

9 引文 斯高帕斯(Scopus)

摘要

For CoO overlayers prepared by evaporating Co atoms in an oxygen atmosphere, both the oxidation of the Co atoms at the interface and the segregation of oxygen atoms into the Co surface occur. Parts of Co atoms at the interface become nonferromagnetic and this causes the reduction of Kerr intensity at 300 K. After field cooling treatments, further reduction of the Kerr intensity is detected. The change of the Kerr intensity is an indicator of the pinned magnetic moments. In the case of forming thicker interfacial region, more pinned magnetic moments are observed and result in the larger exchange bias field for CoO on thicker Co/Ge(1 0 0). This tunable pinning provides a practical way of increasing exchange bias field by controlling the thickness of the interfacial region for ultrathin CoO/Co bilayers on semiconductor substrates.

原文英語
頁(從 - 到)95-99
頁數5
期刊Applied Surface Science
354
DOIs
出版狀態已發佈 - 2015 11月 1

ASJC Scopus subject areas

  • 化學 (全部)
  • 凝聚態物理學
  • 物理與天文學 (全部)
  • 表面和介面
  • 表面、塗料和薄膜

指紋

深入研究「Pinning of magnetic moments at the interfacial region of ultrathin CoO/Co bilayers grown on Ge(1 0 0)」主題。共同形成了獨特的指紋。

引用此