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2018 Vol.28, Issue 8 Preview Page
Magnetic Properties and Magnetocaloric Effect in Ordered Double Perovskites Sr1.8Pr0.2FeMo1-xWxO6
Imad Hussain1
,
Mohammad Shafique Anwar12
,
Saima Naz Khan3
,
Chan Gyu Lee1
,
Bon Heun Koo1†
1School of Materials Science and Engineering, Changwon National University, Changwon, Gyeongnam 51140, Republic of Korea
2Department of Kulliyat, A. K. T. College, Aligarh Muslim University, Aligarh, 202002, India
3Department of Physics, Abdul Wali Khan University Mardan, Pakistan
†Corresponding author E-Mail : bhkoo@changwon.ac.kr (B. H. Koo, Changwon Nat’l Univ.)
August 2018. pp. 445-451
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Abstract

We report the structural, magnetic and magnetocaloric properties of Sr1.8Pr0.2FeMo1-xWxO6(0.0 ≤ x ≤ 0.4) samples prepared by the conventional solid state reaction method. The X-ray diffraction analysis confirms the formation of the tetragonal double perovskite structure with a I4/mmm space group in all the synthesized samples. The temperature dependent magnetization measurements reveal that all the samples go through a ferromagnetic to paramagnetic phase transition with an increasing temperature. The Arrott plot obtained for each synthesized sample demonstrates the second order nature of the magnetic phase transition. A magnetic entropy change is obtained from the magnetic isotherms. The values of maximum magnetic entropy change and relative cooling power at an applied field of 2.5 T are found to be 0.40 Jkg−1K−1 and 69 Jkg−1 respectively for the Sr1.8Pr0.2FeMoO6 sample. The tunability of magnetization and excellent magnetocaloric features at low applied magnetic field make these materials attractive for use in magnetic refrigeration technology.

Keywords
double perovskites
magnetization
magnetocaloric effect
magnetic entropy change
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 28
  • No :8
  • Pages :445-451
  • Received Date : 2018-04-26
  • Revised Date : 2018-07-16
  • Accepted Date : 2018-07-27
  • DOI :https://doi.org/10.3740/MRSK.2018.28.8.445
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