Field Dependence of the Magnetocaloric Effect in MnFe(P,Si) Materials

Journal Article (2015)
Author(s)

F Guillou (TU Delft - RST/Fundamental Aspects of Materials and Energy)

Hargen Yibole

A. Kamantsev (Russian Academy of Sciences)

G Porcari (TU Delft - RST/Fundamental Aspects of Materials and Energy)

J. Cwik (Wrocław University of Technology)

V. Koledov (Russian Academy of Sciences)

N.H. van Dijk (TU Delft - RST/Fundamental Aspects of Materials and Energy)

E.H. Brück (TU Delft - RST/Fundamental Aspects of Materials and Energy)

Research Group
RST/Fundamental Aspects of Materials and Energy
DOI related publication
https://doi.org/10.1109/TMAG.2015.2445975
More Info
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Publication Year
2015
Language
English
Research Group
RST/Fundamental Aspects of Materials and Energy
Issue number
11
Volume number
51

Abstract

The field dependence of the magnetocaloric effect (MCE) in Mn1.22Fe0.73P0.47Si0.53 is studied in terms of the entropy change (Δ S) and the temperature change (Δ T) for applied magnetic fields up to 5 and 14 T, respectively. The magnetic fields required to saturate the MCE in this system are ∼ 1.7 and 4-5 T for Δ S and Δ T, respectively. The MCE field dependence is compared with the two approaches of the literature: 1) latent heat model and 2) the power law evolution predicted from the universal analysis of the MCE. It turns out that both of these methods are unsuitable to describe the MCE field evolution in MnFe(P,Si) materials.

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