Elastic and magnetoelastic properties of TbMnO3single crystal by nanosecond time resolved acoustics and first-principles calculations

P Hemme; C-H Li; P Djemia; P Rovillain; S Houver; Y Gallais; A Sacuto; H Sakata; S Nowak; B Baptiste; E Charron; B Perrin; L Belliard; M Cazayous

doi:10.1088/1361-648X/ac25ad

Elastic and magnetoelastic properties of TbMnO₃single crystal by nanosecond time resolved acoustics and first-principles calculations

J Phys Condens Matter. 2021 Sep 27;33(49). doi: 10.1088/1361-648X/ac25ad.

Authors

P Hemme¹, C-H Li^{2

3}, P Djemia², P Rovillain⁴, S Houver¹, Y Gallais¹, A Sacuto¹, H Sakata⁵, S Nowak⁶, B Baptiste⁷, E Charron⁴, B Perrin⁴, L Belliard⁴, M Cazayous¹

Affiliations

¹ Laboratoire Matériaux et Phénomènes Quantiques, Université de Paris, UMR 7162 CNRS, 75205 Paris Cedex 13, France.
² Laboratoire des Sciences des Procédés et des Matériaux UPR-CNRS 3407, Université Sorbonne Paris Nord, Alliance Sorbonne Paris Cité, Villetaneuse, 93430, France.
³ School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
⁴ Institut des Nanosciences de Paris, Sorbonne Université, CNRS UMR 7588, 4 Place Jussieu, 75005 Paris, France.
⁵ Department of Physics, Tokyo University of Science, 1-3 Kagurazaka Shinjyuku-ku Tokyo 162-8601, Japan.
⁶ UFR de Chimie, Université de Paris, 15 rue Jean Antoine de Baïf, 75013 Paris, France.
⁷ Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Sorbonne Université, 75005 Paris, France.

PMID: 34507312
DOI: 10.1088/1361-648X/ac25ad

Abstract

Time resolved pump and probe acoustics and first-principles calculations were employed to assess elastic properties of the TbMnO₃perovskite manganite having orthorhombic symmetry. Measuring sound velocities of bulk longitudinal and shear acoustic waves propagating along at least two different directions in the high symmetry planes (100), (010) and (001), provided a powerful mean to selectively determine the six diagonal elastic constantsC₁₁= 227 GPa,C₂₂= 349 GPa,C₃₃= 274 GPa,C₄₄= 71 GPa,C₅₅= 57 GPa,C₆₆= 62 GPa. Among the three remaining off-diagonal ones,C₂₃= 103 GPa was determined with a bissectrice direction. Density functional theory calculations with colinear spin-polarized provided complementary insights on their optical, elastic and magnetoelastic properties.

Keywords: elastic properties; multiferroics; time resolved acoustics.