Paper Title:
Surface Debye Temperatures and Specific Heat of Nanocrystals
  Abstract

The present study deals with the contribution of the surface atomic layer to the specific heat of nanocrystals. In the case of small phases with comparable number of bulk and surface atoms, the variation of heat capacity with respect to that of infinitely large phase is significant. To evaluate this variation, in the framework of the classical Debye model, we introduce surface excess heat capacity that accounts for the surface layer contribution. On that physical background, we draw a functional dependence of the specific heat of nano clusters on the number of their bulk and surface atoms and corresponding bulk, , and surface, , Debye temperatures. Since depends on the crystallographic orientation of the surface, the presented model also accounts for the symmetry and atomic density of the respective crystal faces of the nanocrystal.

  Info
Periodical
Solid State Phenomena (Volume 159)
Edited by
Lilyana Kolakieva and Roumen Kakanakov
Pages
171-174
DOI
10.4028/www.scientific.net/SSP.159.171
Citation
M. Michailov, I. Avramov, "Surface Debye Temperatures and Specific Heat of Nanocrystals", Solid State Phenomena, Vol. 159, pp. 171-174, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sanjeev K. Gupta, Mina Talati, Prafulla K. Jha
Abstract:The present paper reports a simple calculation of the size and shape dependent melting temperature of nanoparticles. The melting temperature...
132
Authors: Aleksandr A. Povzner, Anton N. Filanovich, Tatyana A. Nogovitsyna
Chapter 5: Strongly Correlated and Superconducting Compounds
Abstract:Two computational approaches – a thermodynamic model based on results of ab initio calculations of the ground state and the self-consistent...
203