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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:25 |
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Conference: Bucharest University Faculty of Physics 2006 Meeting
Section: Solid State Physics and Materials Science
Title:
Simulation of the stability of the nanocluster structures of several noble metals
Authors:
Ana Ioanid
Affiliation:
Faculty of Physics, University of Bucharest
E-mail
aioanid@solid.fizica.unibuc.ro
Keywords:
nanocluster, potential range
Abstract:
An important issue in cluster science is to understand whether crystalline or non-crystalline structures prevail for a given size and composition.The noble metal nanoclusters may be obtained into one the three morphologies: non-crystalline- icosahedral and decahedral, and crystalline-fcc. The transitions icosahedral-decahedral and decahedral-fcc crossover sizes are strongly material dependent. The soft interactions, with wide potential wells, stabilize strained structures, while sticky interactions favor crystalline structures.Simulation of the conditions that stabilize crystalline or non-crystalline structures and crossover sizes for several noble metals, uses the dependence of the minimum energy of the potential parametrization.
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