Deakin University
Browse
debnath-magnetocaloriceffect-2016.pdf (1.12 MB)

Magnetocaloric effect in the metamagnet ErRhSi compound

Download (1.12 MB)
Version 2 2024-06-06, 08:44
Version 1 2017-04-11, 15:06
journal contribution
posted on 2024-06-06, 08:44 authored by JC Debnath, HS Nair, AM Strydom, K Ramesh Kumar, J Wang
The magnetocaloric effect is observed in the 1:1:1 compound ErRhSi, which is a metamagnet is reported in this paper. ErRhSi crystallizes in the orthorhombic space group Pnma, adopting the TiNiSi structure type, with lattice parameters a(Å) = 6.7903(5), b(Å) = 4.1881(3), and c(Å) = 7.3847(4). Our magnetic measurements confirm an antiferromagnetic phase transition at TN ≈ 8.5 K, also supported by the specific heat measurement. Crystal field effects of Er3+ are suggested by the inverse magnetic susceptibility data which do not conform to an ideal Curie-Weiss behaviour and also by the total entropy that attains Rln (2) at TN. Although the magnetic hysteresis indicates ErRhSi to be a soft magnet, several clear metamagnetic features are observed at 2 K. Magnetic entropy change ΔSM = − 8.7 J/kg-K is observed at about 9 K with the application of 5 T magnetic field. The corresponding adiabatic temperature change ΔTad is about 4 K. Large magnetocaloric effects suggest that this material is suitable for the low temperature magnetic refrigeration.

History

Journal

Journal of applied physics

Volume

120

Pagination

233902-1-233902-6

Location

Melville, N.Y.

Open access

  • Yes

ISSN

0021-8979

eISSN

1089-7550

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2016, AIP

Issue

23

Publisher

AIP

Usage metrics

    Research Publications

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC