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Evaluation of the Grüneisen Constant of Molten GaAs
Author(s) -
Rao R. V. Gopala,
Debnath D.
Publication year - 1993
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221770103
Subject(s) - thermodynamics , debye function , debye , debye model , constant (computer programming) , function (biology) , volume (thermodynamics) , materials science , chemistry , debye length , physics , organic chemistry , ion , evolutionary biology , biology , computer science , programming language
The effective potential function of molten GaAs is derived from experimental neutron diffraction data. From the second and third derivatives of the derived potential function the Grüneisen constant is calculated. As an interconsistent check the first derivative of the potential function is utilized to calculate the pressure of the fluid. The energy of vibration is computed from Debye's equation. The calculated pressure, experimental volume, and Debye vibrational energy are then used to evaluate the Grüneisen constants. The results calculated by these two methods are found to be similar.