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Gruneisen Parameter of Metals Based on Free Electron Theory

Journal: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) (Vol.10, No. 3)

Publication Date:

Authors : ;

Page : 5107-5114

Keywords : Gruneisen parameter; Deformation; Strain; Poisson ratio; Free electron theory & Electronic concentration;

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We present an efficient theoretical approach for computing the Gruneisen parameter of metals based on free electron theory. The experimental value of Fermi energy and the poisson ratio of metals is used for computation. The result obtained agree quite well with experimental value this prove that free electron theory is useful in theoretical predictions of some properties of metals. The study revealed that Gruneisen parameter of metals depend on electronic concentration, conduction electron, electron compressibility and number of valence electron per unit cell. The Gruneisen parameter of metals decreases as strain and temperature between the interacting electron increases for most metals except potassium whose gruneisen parameter does not increase nor decrease as deformation increases. These could be due to its high electron mobility and strong electron cohesion. The trend exhibited by Molybdenum in this work is due to variable valence electron exchange between the interacting ions which make it to be mostly affected by strain. Deformation affects Gruneisen parameter of metal.

Last modified: 2021-01-02 17:31:17