Additivity Rule in the Contributions of the Bond Energies to the Melting Points of Covalent Semiconductors
An additivity rule is formulated for diamond-type semiconductors. According to this rule, the energies of individual bonds in covalent crystals make additive contributions to the melting point. The application of this rule makes it possible to calculate the melting points of binary crystals with similar chemical bonding. It is shown that the validity of the additivity rule is basically related to the short-range nature of the covalent forces. A quantitative agreement is obtained between the thermodynamic data and the proposed chemical bonding schemes.
KeywordsAdditivity Rule Equivalent Bond Defect Phase Total Binding Energy Experimental Melting Point
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