Finding stabilized coercivity in a study of thickness and temperature dependent Co/Ag/Ge(001) ultrathin films

C. W. Su; J. S. Tsay; Y. D. Yao

doi:10.1016/j.tsf.2007.07.185

Finding stabilized coercivity in a study of thickness and temperature dependent Co/Ag/Ge(001) ultrathin films

C. W. Su^*, J. S. Tsay, Y. D. Yao

^*此作品的通信作者

物理學系

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

4 引文斯高帕斯（Scopus）

摘要

Epitaxial magneto-optical Co/Ag/Ge(001) ultrathin films were investigated at both room temperature and low temperature. Interesting variations in coercivity as a function of thickness and temperature suggest the existance of interfacial exchange interactions. The operative Ag layers required to inhibit intermixing of Co-Ge alloys from the oscillation of coercivity with Ag film thickness were determined. When the Ag film thickness was reduced to the submonolayer range, perpendicular anisotropy was unexpectedly found. Thus unusual phenomenon can be qualitatively discussed in terms of effective magnetic anisotropy by the contribution of reduced Co layers and by surface magnetic anisotropy.

原文	英語
頁（從 - 到）	1164-1170
頁數	7
期刊	Thin Solid Films
卷	516
發行號	6
DOIs	https://doi.org/10.1016/j.tsf.2007.07.185
出版狀態	已發佈 - 2008 1月 30

ASJC Scopus subject areas

電子、光磁材料
表面和介面
表面、塗料和薄膜
金屬和合金
材料化學

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10.1016/j.tsf.2007.07.185

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title = "Finding stabilized coercivity in a study of thickness and temperature dependent Co/Ag/Ge(001) ultrathin films",

abstract = "Epitaxial magneto-optical Co/Ag/Ge(001) ultrathin films were investigated at both room temperature and low temperature. Interesting variations in coercivity as a function of thickness and temperature suggest the existance of interfacial exchange interactions. The operative Ag layers required to inhibit intermixing of Co-Ge alloys from the oscillation of coercivity with Ag film thickness were determined. When the Ag film thickness was reduced to the submonolayer range, perpendicular anisotropy was unexpectedly found. Thus unusual phenomenon can be qualitatively discussed in terms of effective magnetic anisotropy by the contribution of reduced Co layers and by surface magnetic anisotropy.",

keywords = "Magneto-optical properties, Thin film growth",

author = "Su, {C. W.} and Tsay, {J. S.} and Yao, {Y. D.}",

note = "Funding Information: Authors wish to thank the National Science Council of the Republic of China, Taiwan for supporting this research work under grant numbers NSC95-2112-M-415-001 (C.W. Su), NSC95-2112-M-003-023-MY2 (J.S. Tsay), and NSC95-2112-M-001-059-MY3 (Y.D. Yao). Their gratitude also goes to the Academic Paper Editing Clinic, National Taiwan Normal University.",

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T1 - Finding stabilized coercivity in a study of thickness and temperature dependent Co/Ag/Ge(001) ultrathin films

AU - Su, C. W.

AU - Tsay, J. S.

AU - Yao, Y. D.

N1 - Funding Information: Authors wish to thank the National Science Council of the Republic of China, Taiwan for supporting this research work under grant numbers NSC95-2112-M-415-001 (C.W. Su), NSC95-2112-M-003-023-MY2 (J.S. Tsay), and NSC95-2112-M-001-059-MY3 (Y.D. Yao). Their gratitude also goes to the Academic Paper Editing Clinic, National Taiwan Normal University.

PY - 2008/1/30

Y1 - 2008/1/30

N2 - Epitaxial magneto-optical Co/Ag/Ge(001) ultrathin films were investigated at both room temperature and low temperature. Interesting variations in coercivity as a function of thickness and temperature suggest the existance of interfacial exchange interactions. The operative Ag layers required to inhibit intermixing of Co-Ge alloys from the oscillation of coercivity with Ag film thickness were determined. When the Ag film thickness was reduced to the submonolayer range, perpendicular anisotropy was unexpectedly found. Thus unusual phenomenon can be qualitatively discussed in terms of effective magnetic anisotropy by the contribution of reduced Co layers and by surface magnetic anisotropy.

AB - Epitaxial magneto-optical Co/Ag/Ge(001) ultrathin films were investigated at both room temperature and low temperature. Interesting variations in coercivity as a function of thickness and temperature suggest the existance of interfacial exchange interactions. The operative Ag layers required to inhibit intermixing of Co-Ge alloys from the oscillation of coercivity with Ag film thickness were determined. When the Ag film thickness was reduced to the submonolayer range, perpendicular anisotropy was unexpectedly found. Thus unusual phenomenon can be qualitatively discussed in terms of effective magnetic anisotropy by the contribution of reduced Co layers and by surface magnetic anisotropy.

KW - Magneto-optical properties

KW - Thin film growth

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JO - Thin Solid Films

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Finding stabilized coercivity in a study of thickness and temperature dependent Co/Ag/Ge(001) ultrathin films

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