Article

# Defect melting models for cubic lattices and universal laws for melting temperatures

Institut für Theoretische Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
Physics Letters A DOI:10.1016/S0375-9601(03)00730-8 pp.152-157
Source: arXiv

ABSTRACT We set up simple harmonic lattice models for elastic fluctuations in bcc and fcc lattices and the excitation of dislocations and disclinations. From these we derive, in the lowest approximation, universal formulas which predict melting temperatures in good agreement with the experiments. This new theory is more precise than Lindemann's rule by factor 2, and more predictive, since the size of the Lindemann number has to be fixed by experiments. In addition, our theory allows for systematic improvements.

0 0
·
0 Bookmarks
·
14 Views

Available from

### Keywords

bcc

disclinations

factor 2

good agreement

Lindemann's rule

new theory

simple harmonic lattice models

systematic improvements

universal formulas