CONTRIBUTION OF THE ELECTRON SUBSYSTEM STATE VARIATIONS TO THE MELTING ENTROPY OF COVALENT CRYSTALS

Analysis of the whole complex of the electrophysical and thermodynamic properties of semiconductors allowed us to conclude that melting entr opy can be presented by three basic components, i.e. by the position, vibration and electron contributions. Possible methods of calculating the above contributions have been discussed, e.g, it has been shown th at the electron contribution to the melting entropy of semiconductors that are metallized makes up a considerable part of the total melting entropy, which accounts for the anomalous values of the melting entrop y of the substances discussed.