Metamagnetism, sign reversal and low temperature magnetocaloric effect in single-crystalline EuV2Al20

K. Ramesh Kumar, Harikrishnan S. Nair, A. Bhattacharyya, A. Thamizhavel, André M. Strydom

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The Frank-Kasper cage compound EuV2Al20 crystallizes in the cubic structure with Fd3‾m space group and exhibits unusual magnetic and transport properties. The system undergoes an antiferromagnetic transition below 5.6 K wherein the Eu2+ moments are aligned anti-parallel along 〈1 1 1〉 direction and the system exhibits a weak metamagetic transition at the field of 1 T. Arrott plots (M2 vs H/M) show a “S” shaped variation in the low fields below TN and the plausible reason for the occurrence of negative slope is discussed. Isothermal magnetic entropy change is estimated from both magnetization and heat capacity measurements invoking the Maxwell's thermodynamic relations. Temperature variation of ΔSm showed a weak negative minimum and a sign reversal at the field value of 1 T due to field induced metamagnetic transition. Universal master curve is constructed by rescaling the ΔSm vs T curves in the context of analysing the nature of the magnetic transition.

Original languageEnglish
Pages (from-to)205-209
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Publication statusPublished - 15 Apr 2018


  • Arrott plot
  • Magnetocaloric effect
  • Metamagnetism
  • Universal scaling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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