Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2
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my.unimap-312192014-01-15T03:44:17Z Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2 Righi, H. Rached, Djamel Benalia, S. Rabah, Khenata, Prof. Dr. S, Omran Ali Hussain, Reshak, Prof. Dr. rachedj@yahoo.fr khenata_rabah@yahoo.fr maalidph@yahoo.co.uk Elastic constants Electronic structure FP-LMTO Magnetic properties Thermal properties Link to publisher's homepage at http://www.elsevier.com/ The structural, elastic, thermodynamic, electronic and magnetic properties of ferromagnetic tetragonal PrNi 2Si 2 and PrNi 2Ge 2 compounds have been calculated using the full-potential linear muffin-tin orbital (FP-LMTO) method. The exchange-correlation potential is treated within the local spin density approximation of Perdew and Wang (LSDA-PW). Moreover, we have added the Coulomb interaction U to improve the electronic band structure calculations and the magnetic properties. The calculated structural parameters are in good agreement with the experimental data. The elastic constants C ij are predicted using the total energy variation versus strain technique. The polycrystalline elastic moduli, namely; shear modulus, Young's modulus, Poisson's ratio, sound velocities and Debye temperature are derived from the obtained single-crystal elastic constants. Ductility behavior of these compounds is interpreted via the calculated elastic constants C ij. Electronic and bonding properties are discussed from the calculations of band structure and density of states. The thermodynamic properties are predicted through the quasi-harmonic Debye model, in which the lattice vibrations are taken into account. The variation of the bulk modulus, lattice constant, heat capacities and Debye temperature with pressure and temperature are successfully obtained. 2014-01-15T03:44:17Z 2014-01-15T03:44:17Z 2012-03 Article Computational Materials Science, vol. 54(1), 2012, pages 303-311 0927-0256 http://www.sciencedirect.com/science/article/pii/S0927025611005489 http://dspace.unimap.edu.my:80/dspace/handle/123456789/31219 en Elsevier B.V. |
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Elastic constants Electronic structure FP-LMTO Magnetic properties Thermal properties |
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Elastic constants Electronic structure FP-LMTO Magnetic properties Thermal properties Righi, H. Rached, Djamel Benalia, S. Rabah, Khenata, Prof. Dr. S, Omran Ali Hussain, Reshak, Prof. Dr. Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2 |
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Link to publisher's homepage at http://www.elsevier.com/ |
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rachedj@yahoo.fr |
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rachedj@yahoo.fr Righi, H. Rached, Djamel Benalia, S. Rabah, Khenata, Prof. Dr. S, Omran Ali Hussain, Reshak, Prof. Dr. |
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Article |
author |
Righi, H. Rached, Djamel Benalia, S. Rabah, Khenata, Prof. Dr. S, Omran Ali Hussain, Reshak, Prof. Dr. |
author_sort |
Righi, H. |
title |
Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2 |
title_short |
Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2 |
title_full |
Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2 |
title_fullStr |
Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2 |
title_full_unstemmed |
Theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of PrNi 2Si 2 and PrNi 2Ge 2 |
title_sort |
theoretical investigation of the elastic, thermodynamic, electronic and magnetic properties of prni 2si 2 and prni 2ge 2 |
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Elsevier B.V. |
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2014 |
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http://dspace.unimap.edu.my:80/dspace/handle/123456789/31219 |
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1643796502872588288 |
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