Work

Thermoelectric and vibrational properties of Be 2 C, BeMgC and Mg 2 C using first-principles method

Year: 2019

Type: article

Abstract: C, and the BeMgC mixed crystal. The Seebeck coefficient, electronic thermal conductivity and the power factor are calculated. Further, the transport coefficients are linked to find the electronic fitness function to compare the performance with other thermoelectric materials. The procedure can also be applied to study the thermoelectric properties of other materials. The vibrational frequencies at the Brillouin zone centre are calculated generating a Hessian matrix from the analytical gradients of the energy with respect to atomic coordinates in the three antifluorite crystals. Moreover, the static, high frequency dielectric constants and Born effective charges are calculated to find splitting in the longitudinal optic and transverse optic modes. Results are compared with the data wherever available in the literature and a very good agreement is found in most cases.

Source: RSC Advances

DOI: 10.1039/c9ra01573f

Authors: V. Maurya, U. Paliwal, G. Sharma, K. B. Joshi

Institutions: Mohanlal Sukhadia University, Jai Narain Vyas University, University of Kota

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funders: University Grants Commission, Université de Liège