☆ 4.7 Article

Magnetocaloric properties and universal behavior in electron-doped manganite Ca0.88Dy0.12MnO3

JOURNAL OF ALLOYS AND COMPOUNDS (2016)

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JOURNAL OF ALLOYS AND COMPOUNDS
卷 667, 期 -, 页码 1-5

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ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.01.155

关键词

Electron-doped manganite; Magnetocaloric; Universal behavior; Ceramics

类别

Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

资金

  1. National Natural Science Foundation of China [11404011, 51302007, 10804024]
  2. China Postdoctoral Science Foundation [2014M560018]
  3. Guangdong Natural Science Funds for Distinguished Young Scholar [2015A030306036]
  4. Shenzhen Science and Technology Innovation Committee [JCYJ20150331100515911, JCYJ20150629144835001, JCYJ20140417144423201, KQCX20150327093155293]

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The magnetocaloric properties of an electron-doped manganite Ca0.88Dy0.12MnO3 have been studied in detail. A reversible magnetocaloric effect has been observed at the Curie temperature T-C of 100 K, which is related to a second order magnetic transition from paramagnetic to ferromagnetic state. The values of maximum magnetic entropy change can reach 0.82 and 1.92 J kg(-1) K-1 for a field change of 2 and 5 T, respectively, with no obvious hysteresis loss in the vicinity of the Curie temperature. The magnetic entropy change can be well described by the recently proposed phenomenological universal behavior. This result can shed light on the design of magnetic refrigerators in engineering. (c) 2016 Elsevier B.V. All rights reserved.

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