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Magnetic and Magnetocaloric Properties of K-Doped Pr0.5Sr0.5MnO3

  • Hangfu Yang
  • Sihao Hua
  • Minxiang PanEmail author
  • Yundan Yu
  • Qiong Wu
  • Hongliang Ge
Original Paper
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Abstract

We have studied the effect of potassium substitution on the magnetic and magnetocaloric properties of Pr0.5Sr0.5−xKxMnO3 (x = 0, 0.05, 0.1, 0.15, 0.2, and 0.3). X-ray diffraction results show an orthorhombic crystal structure formed at room temperature for x ≤ 0.2. The maximum entropy change (|ΔSM|max) of the samples gradually increases from 1.15 (x = 0) to 3.37 J kg−1 K−1 (x = 0.3) in a magnetic field change of 15 kOe with increasing concentration of potassium. The Curie temperatures (TC) are found to be 265, 285, 295, 300, 295, and 220 K for x = 0, 0.05, 0.1, 0.15, 0.2, and 0.3, respectively. The temperature range of the phase transition becomes wider, the relative cooling power (RCP) gradually increases with the content of potassium, and the largest RCP is achieved to be 63.5 J kg−1 for x = 0.3, which makes it as a desirable material for the room temperature magnetic refrigeration.

Keywords

Magnetocaloric effect Phase transition Manganite Magnetic properties 

Notes

Funding Information

This paper is supported by the Science and Technology Plan Projects of Zhejiang Province (2018C37043) and the National Natural Science Foundation of China (No. 51771176).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Hangfu Yang
    • 1
  • Sihao Hua
    • 2
  • Minxiang Pan
    • 1
    Email author
  • Yundan Yu
    • 1
  • Qiong Wu
    • 1
  • Hongliang Ge
    • 1
  1. 1.Magnetism Key Laboratory of Zhejiang ProvinceChina Jiliang UniversityHangzhouChina
  2. 2.Zhejiang Fangyuan Test Group Co., LtdHangzhouChina

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