Strain-Induced Segregation in Bimetallic Multiply
Twinned Particles
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Abstract
We
analyze the possibility of strain-induced segregation in bimetallic
multiply twinned particles by an analytic first-order expansion within
a continuum model. The results indicate that while the change in free
energy may be small, there will be a noticeable segregation of larger
atoms to the external surface and smaller ones to the core, which
could have interesting effects when such nanoparticles are used as
heterogeneous catalysts