Large reversible magnetocaloric effect in ferromagnetic semiconductor EuS

D. X. Li, T. Yamamura, S. Nimori, Y. Homma, F. Honda, Y. Haga, D. Aoki

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We present the large reversible magnetocaloric effect (MCE) of the ferromagnetic semiconductor EuS, which shows a maximum magnetic entropy change of -ΔSmmax~37 J kg-1 K-1, an adiabatic temperature change of ΔTad~10.4 K and a relative cooling power of RCP~782 J kg-1 at 18.5 K for a magnetic field change ΔH=5 T. Particularly, the large MCE is isotropic and without hysteresis loss, even for a magnetic field change of 2 T the values of -ΔSmmax, ΔTad and RCP reach as high as 22 J kg-1 K-1, 7.5 K and 284 J kg-1, respectively. These results indicate that EuS has excellent refrigeration performance at the temperatures near 20 K, and thus can be considered as the potential magnetic refrigerant material for liquefaction of hydrogen.

Original languageEnglish
Pages (from-to)6-10
Number of pages5
JournalSolid State Communications
Volume193
DOIs
Publication statusPublished - 2014 Sep

Keywords

  • A. EuS
  • D. Magnetocaloric effect
  • E. Magnetization and specific heat

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Large reversible magnetocaloric effect in ferromagnetic semiconductor EuS'. Together they form a unique fingerprint.

  • Cite this