Exchange effect on alloy formation of Co/Ag/Pt(111) ultrathin films

C. S. Shern; Y. F. Wu; Y. E. Wu

doi:10.1016/S0039-6028(99)00747-5

Exchange effect on alloy formation of Co/Ag/Pt(111) ultrathin films

C. S. Shern^*, Y. F. Wu, Y. E. Wu

^*Corresponding author for this work

Department of Physics

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

3 Citations (Scopus)

Abstract

The exchange between Co atoms and Ag atoms of Co/Ag/Pt(111) ultrathin films affects the formation of Co-Pt alloy. Ag atoms float to the top layers when the annealing temperature is high enough. With further annealing, the formation of the Co-Pt alloy is developed after the exchange between Ag and Co atoms is complete. The starting temperature of the exchange is independent of the coverage of Ag, but the temperature of the complete exchange depends on the thickness of Ag. The temperature is higher when the coverage of Ag increases. The mechanism of the exchange is discussed.

Original language	English
Pages (from-to)	L779-L784
Journal	Surface Science
Volume	439
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(99)00747-5
Publication status	Published - 1999 Sept 20

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0039-6028(99)00747-5

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title = "Exchange effect on alloy formation of Co/Ag/Pt(111) ultrathin films",

abstract = "The exchange between Co atoms and Ag atoms of Co/Ag/Pt(111) ultrathin films affects the formation of Co-Pt alloy. Ag atoms float to the top layers when the annealing temperature is high enough. With further annealing, the formation of the Co-Pt alloy is developed after the exchange between Ag and Co atoms is complete. The starting temperature of the exchange is independent of the coverage of Ag, but the temperature of the complete exchange depends on the thickness of Ag. The temperature is higher when the coverage of Ag increases. The mechanism of the exchange is discussed.",

author = "Shern, {C. S.} and Wu, {Y. F.} and Wu, {Y. E.}",

note = "Funding Information: This research was supported by the National Science Council of ROC under grant number NSC 88-2112-M003-001.",

year = "1999",

month = sep,

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doi = "10.1016/S0039-6028(99)00747-5",

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T1 - Exchange effect on alloy formation of Co/Ag/Pt(111) ultrathin films

AU - Shern, C. S.

AU - Wu, Y. F.

AU - Wu, Y. E.

N1 - Funding Information: This research was supported by the National Science Council of ROC under grant number NSC 88-2112-M003-001.

PY - 1999/9/20

Y1 - 1999/9/20

N2 - The exchange between Co atoms and Ag atoms of Co/Ag/Pt(111) ultrathin films affects the formation of Co-Pt alloy. Ag atoms float to the top layers when the annealing temperature is high enough. With further annealing, the formation of the Co-Pt alloy is developed after the exchange between Ag and Co atoms is complete. The starting temperature of the exchange is independent of the coverage of Ag, but the temperature of the complete exchange depends on the thickness of Ag. The temperature is higher when the coverage of Ag increases. The mechanism of the exchange is discussed.

AB - The exchange between Co atoms and Ag atoms of Co/Ag/Pt(111) ultrathin films affects the formation of Co-Pt alloy. Ag atoms float to the top layers when the annealing temperature is high enough. With further annealing, the formation of the Co-Pt alloy is developed after the exchange between Ag and Co atoms is complete. The starting temperature of the exchange is independent of the coverage of Ag, but the temperature of the complete exchange depends on the thickness of Ag. The temperature is higher when the coverage of Ag increases. The mechanism of the exchange is discussed.

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U2 - 10.1016/S0039-6028(99)00747-5

DO - 10.1016/S0039-6028(99)00747-5

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VL - 439

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JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

Exchange effect on alloy formation of Co/Ag/Pt(111) ultrathin films

Abstract

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