Journal article
Role of Stress in Thin Film Alloy Thermodynamics: Competition between Alloying and Dislocation Formation
Abstract
Using scanning tunneling microscopy (STM) and first-principles local-spin-density-approximation calculations to study submonolayer films of Co (1-c)Ag (c)/Ru(0001) alloys, we have discovered a novel phase-separation mechanism. When the Ag concentration c exceeds 0.4, the surface phase separates between a dislocated, pure Ag phase and a pseudomorphically strained Co(0.6)Ag (0.4) surface alloy. We attribute the phase separation to the competition …
Authors
Thayer GE; Ozolins V; Schmid AK; Bartelt NC; Asta M; Hoyt JJ; Chiang S; Hwang RQ
Journal
Physical Review Letters, Vol. 86, No. 4, pp. 660–663
Publisher
American Physical Society (APS)
Publication Date
January 22, 2001
DOI
10.1103/physrevlett.86.660
ISSN
0031-9007