STABILITY OF MULTIPLY-TWINNED PARTICLES
STABILITY OF MULTIPLY-TWINNED PARTICLES
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DOI:
10.1143/jpsj.27.941
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发表时间:
1969-01-01
影响因子:
1.7
通讯作者:
INO, S
中科院分区:
文献类型:
--
作者:
INO, S
A theory is developed which allows one to discuss the stability of multiply-twinned particles and to calculate critical sizes for stable and quasi-stable states. An icosahedral particle is essentially stable forr≦riw*, quasi-stable forriw*<r≦rit0and unstable forr>rit0whereris an edge length of the particle, while a decahedral particle is not essentially stable but quasi-stable forr≦rdt0and unstable forr>rdt0. The critical sizesriw*,rit0andrdt0are formulated as functions of the specific surface energy γhkl, the twin boundary energy γt, the elastic strain energyWand the adhesive energy γato the substrate. Calculated critical diameters 2riw*,2rit0and 2rdt0for the particles grown in free space for several elements range between 15.5Å and 106.8Å, between 109.8Å and 486.1Å and between 725Å and 3961Å, respectively. These values are in good agreement with experimental results.