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First Principles Study of Mechanical Stability and Thermodynamic Properties of K₂S under Pressure and Temperature Effect

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Boufadi F., Bidai K., Ameri M., Bentouaf A., Bensaid D., Azzaz Y., Ameri I.

Acta Physica Polonica A

2016

vol. 129

issue 3

315-322

First principles calculations on structural, elastic and thermodynamic properties of K₂S have been made using the full-potential augmented plane-waves plus local orbitals within density functional theory using generalized gradient approximation for exchange correlation potentials. The ground state lattice parameter, bulk moduli have been obtained. The second-order elastic constants, Young and shear modulus, Poisson ratio, have also been calculated. Calculated structural, elastic and other parameters are in good agreement with available data. The elastic constants and thermodynamic quantities under high pressure and temperature are also calculated and discussed.

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1 Acta Physica Polonica A

1 2016

1 Ameri I.

1 Ameri M.

1 Azzaz Y.

1 Bensaid D.

1 Bentouaf A.

1 Bidai K.

1 Boufadi F.

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First Principles Study of Mechanical Stability and Thermodynamic Properties of K₂S under Pressure and Temperature Effect