Publication detail

Experimental determination of the temperature- and phase-dependent elastic constants of FeRh

OURDANI, D. CASTELLANO, A. VYTHELINGUM, A. ARREGI URIBEETXEBARRIA, J. UHLÍŘ, V. PERRIN, B. BELMEGUENAI, M. ROUSSIGNÉ, Y. GOURDON, C. VERSTRAETE, M. THEVENARD, L.

Original Title

Experimental determination of the temperature- and phase-dependent elastic constants of FeRh

Type

journal article in Web of Science

Language

English

Original Abstract

The elastic constants of an epitaxial film of FeRh have been determined experimentally in both ferromagnetic (FM) and antiferromagnetic (AF) phases, using a combination of Brillouin light scattering and picosecond acoustics experiments. The C11 constant is noticeably larger in the FM phase than in the AF phase, while C12 and C44 are both lower, leading to larger Rayleigh wave velocities in the FM phase than in the AF phase. The elastic constants were calculated numerically using first-principles anharmonic modeling and machinelearned interatomic potentials. We find that using a temperature-dependent effective potential is indispensable to correctly reproduce the experimental values to within 80-100%. The accurate knowledge of the temperatureand phase-dependences of the elastic constants of crystalline FeRh are valuable ingredients for the predictive modeling of the acoustic and magnetoacoustic properties of this magnetostrictive material.

Keywords

TRANSITION; GENERATION; PHONONS

Authors

OURDANI, D.; CASTELLANO, A.; VYTHELINGUM, A.; ARREGI URIBEETXEBARRIA, J.; UHLÍŘ, V.; PERRIN, B.; BELMEGUENAI, M.; ROUSSIGNÉ, Y.; GOURDON, C.; VERSTRAETE, M.; THEVENARD, L.

Released

18. 6. 2024

Publisher

AMER PHYSICAL SOC

Location

COLLEGE PK

ISBN

2469-9969

Periodical

PHYSICAL REVIEW B

Year of study

110

Number

1

State

United States of America

Pages count

10

URL

https://journals.aps.org/prb/abstract/10.1103/PhysRevB.110.014427

BibTex

@article{BUT189899,
  author="Djoudi {Ourdani} and Alois {Castellano} and Ashwin Kavilen {Vythelingum} and Jon Ander {Arregi Uribeetxebarria} and Vojtěch {Uhlíř} and Bernard {Perrin} and Mohamed {Belmeguenai} and Yves {Roussigné} and Catherine {Gourdon} and Matthieu Jean {Verstraete} and Laura {Thevenard}",
  title="Experimental determination of the temperature- and phase-dependent elastic constants of FeRh",
  journal="PHYSICAL REVIEW B",
  year="2024",
  volume="110",
  number="1",
  pages="10",
  doi="10.1103/PhysRevB.110.014427",
  issn="2469-9969",
  url="https://journals.aps.org/prb/abstract/10.1103/PhysRevB.110.014427"
}