Alloying and strain relaxation effects on spin-reorientation transitions in Cox Ni1-x Cu3 Au (100) ultrathin films

W. C. Lin; B. Y. Wang; Y. W. Liao; Ker Jar Song; Minn Tsong Lin

doi:10.1103/PhysRevB.71.184413

Alloying and strain relaxation effects on spin-reorientation transitions in Cox Ni1-x Cu3 Au (100) ultrathin films

W. C. Lin, B. Y. Wang, Y. W. Liao, Ker Jar Song, Minn Tsong Lin

Department of Physics

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

23 Citations (Scopus)

Abstract

The crystalline structure and the magnetic properties of Cox Ni1-x Cu3 Au (100) films were characterized as functions of thickness and alloy composition. No apparent alloy effect on the crystalline structure was observed with x up to 11%. As the film thickness increases above ∼8 monolayers (ML), the films clearly exhibited a progressively more relaxed structure. Due to the strain relaxation, both the first and the second spin-reorientation transitions (SRT) occurred within 20 ML. The thickness region with perpendicular magnetization was strongly reduced by increasing the Co concentration. For x>10%, no SRT was observed. By combining both the alloy effect and the strain relaxation effect, the SRT boundaries in the phase diagram can be described in a phenomenological model on the basis of magnetoelastics.

Original language	English
Article number	184413
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	71
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.71.184413
Publication status	Published - 2005

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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AU - Song, Ker Jar

AU - Lin, Minn Tsong

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AB - The crystalline structure and the magnetic properties of Cox Ni1-x Cu3 Au (100) films were characterized as functions of thickness and alloy composition. No apparent alloy effect on the crystalline structure was observed with x up to 11%. As the film thickness increases above ∼8 monolayers (ML), the films clearly exhibited a progressively more relaxed structure. Due to the strain relaxation, both the first and the second spin-reorientation transitions (SRT) occurred within 20 ML. The thickness region with perpendicular magnetization was strongly reduced by increasing the Co concentration. For x>10%, no SRT was observed. By combining both the alloy effect and the strain relaxation effect, the SRT boundaries in the phase diagram can be described in a phenomenological model on the basis of magnetoelastics.

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Alloying and strain relaxation effects on spin-reorientation transitions in Cox Ni1-x Cu3 Au (100) ultrathin films

Abstract

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