Direct and Inverse Magnetocaloric effects in A-site ordered PrBaMn2O6 manganite in low magnetic fields

A. M. Aliev; A. G. Gamzatov; A. B. Batdalov; V. S. Kalitka; A. R. Kaul

doi:10.1016/j.jallcom.2011.02.058

Direct and Inverse Magnetocaloric effects in A-site ordered PrBaMn2O6 manganite in low magnetic fields

Strongly Correlated Electrons 2012-02-21 v1 Materials Science

Authors: A. M. Aliev , A. G. Gamzatov , A. B. Batdalov , V. S. Kalitka , A. R. Kaul

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Abstract

The magnetocaloric effect (MCE) of A-site ordered PrBaMn2O6 manganite has been studied by direct methods and by the specific heat measurements. Direct measurements of the MCE in low magnetic fields were performed using recently proposed modulation technique and by classic direct method in high fields. Direct and inverse MCE are observed at Curie and Neel points correspondingly. A value of the inverse MCE in the heating run is less than in the cooling regime. This effect can be attributing to competition between ferromagnetic and antiferromagnetic interactions. Indirectly estimated and direct MCE values considerably differ in around first order AF transition.

Keywords

magnetocaloric effect manganites PrBaMn2O6 inverse MCE Curie point Néel point low magnetic fields

Cite

@article{arxiv.1009.1228,
  title  = {Direct and Inverse Magnetocaloric effects in A-site ordered PrBaMn2O6 manganite in low magnetic fields},
  author = {A. M. Aliev and A. G. Gamzatov and A. B. Batdalov and V. S. Kalitka and A. R. Kaul},
  journal= {arXiv preprint arXiv:1009.1228},
  year   = {2012}
}

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8 pages, 5 figures

Direct and Inverse Magnetocaloric effects in A-site ordered PrBaMn2O6 manganite in low magnetic fields

Abstract

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