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Materials 2017, 10(5), 529;

Magnetocaloric Properties of Mn1.1Fe0.9P0.5As0.5−xGex (0 ≤ x ≤ 0.1) Compounds

Sowinskiego 5, 44-100 Gliwice, Poland
Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Woloska 141, 02-507 Warsaw, Poland
Author to whom correspondence should be addressed.
Academic Editor: Christof Schneider
Received: 5 April 2017 / Revised: 8 May 2017 / Accepted: 10 May 2017 / Published: 13 May 2017
(This article belongs to the Section Energy Materials)
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Intermetallic compounds with the overall formula Mn1.1Fe0.9P0.5As0.5-xGex (x varies from 0 to 0.1) were investigated in order to study their magnetocaloric effect by monitoring the adiabatic temperature change, magnetic entropy change and their relation to structural parameters. It was found that the maximum of magnetocaloric effect was achieved for x = 0.02. Adiabatic temperature change for consolidated powder was equal to 2.75 K for the magnetic field change ΔB = 1.7 T for the sample with x = 0.02. For the pure non-doped sample, this parameter is much lower: ΔTad = 1.7 K @ ΔB = 1.7 T. This result was correlated with the change of structural parameters such as lattice constants and the unit cell volume. View Full-Text
Keywords: magnetocaloric effect; adiabatic temperature change; crystal structure; intermetallic compound magnetocaloric effect; adiabatic temperature change; crystal structure; intermetallic compound

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Wlodarczyk, P.; Hawelek, L.; Kowalczyk, M.; Kaminska, M.; Polak, M.; Hudecki, A.; Kolano-Burian, A. Magnetocaloric Properties of Mn1.1Fe0.9P0.5As0.5−xGex (0 ≤ x ≤ 0.1) Compounds. Materials 2017, 10, 529.

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