Elastic constants of Dy₂Fe₁₄B crystal by ab-initio calculations

Article type: Research Article

Authors: Chrobak, Dariusz^a; | Chrobak, Artur^b | Ziółkowski, Grzegorz^b | Granek, Krzysztof^b

Affiliations: [a] Institute of Materials Science, Silesian Center for Education and Interdisciplinary Research, Chorzów, Poland | [b] Institute of Physics, University of Silesia, Katowice, Poland

Correspondence: [*] Corresponding author: Dariusz Chrobak, Institute of Materials Science, Silesian Center for Education and Interdisciplinary Research, 75 Pułku Piechoty 1, 45-500 Chorzów, Poland. E-mail: [email protected]

Abstract: This paper concerns the elastic properties of Dy2Fe14B crystal investigated by ab-initio calculations. We determined the elastic constants of the considered crystal: C11 = 297, C12 = 92, C13 = 99, C33 = 287, C44 = 82, C66 = 80 GPa. Moreover, estimated from elastic constants physical properties (acoustic wave velocities, elastic moduli, Debye and melting temperature) are consistent with the reference data obtained for other (RE)2Fe14B crystals.

Keywords: Permanent magnet, atomistic modelling, elastic properties

DOI: 10.3233/JAE-171202

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 1, pp. 151-156, 2019