Structural and thermal properties of Cd-Zn-Te ternary nanoparticles: Molecular-dynamics simulations

Kurban M., Malcioglu O. B., ERKOÇ Ş.

CHEMICAL PHYSICS, vol.464, pp.40-45, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 464
  • Publication Date: 2016
  • Doi Number: 10.1016/j.chemphys.2015.11.003
  • Journal Name: CHEMICAL PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.40-45
  • Keywords: Nanoparticles, CdZnTe, Molecular dynamics simulations, Heat capacity, Bond order potential (BOP), Order parameter
  • Middle East Technical University Affiliated: Yes

Abstract

A molecular dynamics simulations using a recently developed CdZnTe bond order potential is carried out to study structural and thermodynamical properties of the CdZnTe spherical-like ternary nanoparticles with 167-357 atoms in the temperature range 100 K-600 K. The heat capacity calculation is performed as depending the size and the stoichiometry at various temperatures using a non-equilibrated molecular dynamics simulation strategy. Furthermore, the segregation phenomena of Cd, Zn, and Te atoms in the Cd-Zn-Te nanoparticles are investigated by calculating the order parameter R depending on nanoparticle size and temperature. The radial distribution function has also been calculated for the Cd0.50Zn0.50Te nanoparticle with 357 atoms at 100 K and 600 K. (C) 2015 Elsevier B.V. All rights reserved.