DETERMINE MORSE POTENTIAL, THERMAL EXPANSION COEFFICIENT AND DESCRIBE ASYMMETRICAL COMPONENTS THROUGH DEBYE -WALLER FACTOR BY ANHARMONIC CORRELATED EINSTEIN MODEL
DOI:
https://doi.org/10.51453/2354-1431/2016/94Keywords:
Anharmonic; correlate; thermodynamic; ansymmetry; cumulant.Abstract
Effective potential in anharmonic correlated Einstein model was determined on to base analytics calculation Morse potential between absorber and backscatter atoms with
nearest neighbor atoms, this work was represented the expression of thermal expansion coefficient at high temperatures and expressions was described ansymmetry components
(cumulants) and thermodynamic quantity through Debye-Waller factor. Expressions of correlative function between the cumulants and between cumulants and thermal expansion
coefficient for cubic structural crystals also was determined. The expressions obtained include classical theory at high temperature and quantum effects at low temperature.
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