Magnetocaloric effect in (La0.7Sr0.3MnO3)1−x–(BaTiO3)x solid solution spin-glass system

C. Nayek, M. K. Ray, A. Pal, I. M. Obaidat, P. Murugavel

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

(La0.7Sr0.3MnO3)1−x–(BaTiO3)x solid solution samples (x = 0, 0.03, and 0.08) were synthesized by sol–gel route. Pure La0.7Sr0.3MnO3 has orthorhombic structure with Pbnm space group whereas solid solution samples possess rhombohedral structure with R-3c space group. Temperature-dependent ac susceptibility at different frequencies and memory effect confirmed the spin-glass behavior in these samples. The samples exhibited magnetocaloric coefficient around room temperature. The maximum values of magnetic entropy change observed in our samples are 0.45, 0.86, and 1.07 J Kg−1 K−1 for x = 0.03 and 0.62, 1.23 and 1.56 J Kg−1 K−1 for x = 0.08 compounds at 2, 4, and 5 T applied magnetic fields, respectively. The relative cooling power values for x = 0.03 and 0.08 are 55.9 and 116.5 J Kg−1, respectively, at 5 T. The observed multifunctional properties of the studied system give a new direction to explore the magnetocaloric effect in similar such systems.

Original languageEnglish
Pages (from-to)2405-2412
Number of pages8
JournalJournal of Materials Science
Volume53
Issue number4
DOIs
Publication statusPublished - Feb 1 2018

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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