Journal of Electronic Materials

, Volume 48, Issue 10, pp 6583–6590 | Cite as

Magnetic and Table-Like Magnetocaloric Properties of Polycrystalline Pr0.7Ba0.1Sr0.2MnO3

  • Y. Pham
  • T. V. Manh
  • T. D. Thanh
  • D.-S. Yang
  • S.-C. Yu
  • D.-H. KimEmail author


The magnetic and magnetocaloric properties of Pr0.7Ba0.1Sr0.2MnO3 polycrystalline are presented. The sample is single phase of a monoclinic structure with a = 5.4726 Å, b = 5.5045 Å, c = 7.7339 Å, α = γ = 90°, and β = 90.003°. X-ray absorption spectrum shows a co-existence of Mn4+ and Mn3+ ions in the compound. A ferromagnetic–paramagnetic (FM–PM) phase transition occurs at around 232 K. An analysis of the critical behavior near the FM–PM transition indicates a short-range magnetic ordering in Pr0.7Ba0.1Sr0.2MnO3 with critical exponents dependent on an applied magnetic field. The critical parameters are found to be β = 0.220 ± 0.03, 0.224 ± 0.002, and 0.227 ± 0.002, γ = 0.732 ± 0.011, 0.818 ± 0.003, and 0.958 ± 0.013, TC = 232.7, 234.6, and 236.6 K for field ranges of 1–3 T, 3–4 T and 4–5 T, respectively. The maximum entropy change (− ΔSmax) is found to be 5.67 J/kg K near the TC for a 5 T of field change. The table-like magnetocaloric effect observed in this sample is desirable for active magnetic refrigeration.


Magnetic table-like magnetocaloric perovskite critical behavior 


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This work was supported by the National Research Foundation of Korea through the Korea-Russia joint collaboration project (No. 2017K1A3A1A49070064) and Institute of Materials Science-Vietnam Academy of Science and Technology, Vietnam (Grant No. CSL1.04.19).


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Y. Pham
    • 1
  • T. V. Manh
    • 1
  • T. D. Thanh
    • 2
    • 3
  • D.-S. Yang
    • 4
  • S.-C. Yu
    • 1
  • D.-H. Kim
    • 1
    Email author
  1. 1.Department of Physics, College of Natural ScienceChungbuk National UniversityCheongjuSouth Korea
  2. 2.Institute of Materials ScienceVietnam Academy of Science and TechnologyHanoiVietnam
  3. 3.Graduate University of Science and TechnologyVietnam Academy of Science and TechnologyHanoiVietnam
  4. 4.Department of Physics, College of EducationChungbuk National UniversityCheongjuSouth Korea

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