Dielectric and magnetocaloric study of TmCrO3

K. Yoshii, Naoshi Ikeda

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Abstract

Dielectric and magnetocaloric measurements are carried out for the chromite TmCrO3. This oxide was reported to be multiferroic below the Néel temperature (TN) of ∼125 K, likely due to a structural transformation. The dielectric response shows large dielectric constants below 300 K. However, from the analyses of loss tangent, AC conductivity and dielectric modulus, this behavior is rooted in hopping of charge carriers rather than electric dipoles, as proposed for some other chromites. No dielectric anomaly is found at TN. The magnetocaloric effect shows that the magnetic transitions at TN as well as the spin reorientation temperature are of a second order. This result strongly suggests the absence of magnetostructural transition at TN in accord with no observation of ferroelectric transition at this temperature.

Original languageEnglish
Pages (from-to)364-369
Number of pages6
JournalJournal of Alloys and Compounds
Volume804
DOIs
Publication statusPublished - Oct 5 2019

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Keywords

  • Chromite
  • Dielectric
  • Magnetocaloric
  • Multiferroic
  • Perovskite

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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