Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/1481
Title: Effects of the attractive interactions in the thermodynamic, dynamic, and structural anomalies of a two length scale potential.
Authors: Silva, Jonathas Nunes da
Salcedo, Evy
Oliveira, Alan Barros de
Barbosa, Márcia Cristina Bernardes
Issue Date: 2010
Citation: SILVA, J. N. da et al. Effects of the attractive interactions in the thermodynamic, dynamic, and structural anomalies of a two length scale potential. The Journal of Chemical Physics, v. 133, n.24, p.244506, dez. 2010. Disponível em: <http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JCPSA6000133000024244506000001&idtype=cvips&doi=10.1063/1.3511704&prog=normal>. Acesso em: 01 out. 2012.
Abstract: Using molecular dynamic simulations, we study a system of particles interacting through a continuous core-softened potentials consisting of a hard core, a shoulder at closest distances, and an attractive well at further distance. We obtain the pressure–temperature phase diagram of this system for various depths of the tunable attractive well. Since this is a two length scale potential, density, diffusion, and structural anomalies are expected. We show that the effect of increasing the attractive interaction between the molecules is to shrink the region in pressure in which the density and the diffusion anomalies are present. If the attractive forces are too strong, particle will be predominantly in one of the two length scales and no density of diffusion anomaly is observed. The structural anomalous region is present for all the cases.
URI: http://www.repositorio.ufop.br/handle/123456789/1481
ISSN: 10897690
metadata.dc.rights.license: O Periódico The Journal of Chemical Physics concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3343600634980.
Appears in Collections:DEFIS - Artigos publicados em periódicos

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