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

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1164-1170
Number of pages	7
Journal	Thin Solid Films
Volume	516
Issue number	6
DOIs	https://doi.org/10.1016/j.tsf.2007.07.185
Publication status	Published - 2008 Jan 30

Keywords

Magneto-optical properties
Thin film growth

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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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.",

year = "2008",

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day = "30",

doi = "10.1016/j.tsf.2007.07.185",

language = "English",

volume = "516",

pages = "1164--1170",

journal = "Thin Solid Films",

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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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U2 - 10.1016/j.tsf.2007.07.185

DO - 10.1016/j.tsf.2007.07.185

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SN - 0040-6090

VL - 516

SP - 1164

EP - 1170

JO - Thin Solid Films

JF - Thin Solid Films

IS - 6

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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