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Dynamics of the magnetoelastic phase transition and adiabatic temperature change in Mn1.3Fe0.7P0.5Si0.55

Fries, Maximilian and Gottschall, Tino and Scheibel, Franziska and Pfeuffer, Lukas and Skokov, Konstantin P. and Skourski, Yurii and Acet, Mehmet and Farle, Michael and Wosnitza, Joachim and Gutfleisch, Oliver (2019):
Dynamics of the magnetoelastic phase transition and adiabatic temperature change in Mn1.3Fe0.7P0.5Si0.55.
In: Journal of Magnetism and Magnetic Materials, 477, pp. 287-291, ISSN 0304-8853,
DOI: 10.25534/tuprints-00013409,
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Item Type: Article
Title: Dynamics of the magnetoelastic phase transition and adiabatic temperature change in Mn1.3Fe0.7P0.5Si0.55
Language: English
Abstract:

The adiabatic temperature change ΔTad of a Mn1:3Fe0:7P0:5Si0:55 Fe2P-type alloy was measured under different magnetic field-sweep rates from 0:93 Ts-1 to 2870 Ts-1. We find a field-sweep-rate independent magnetocaloric effect due a partial alignment of magnetic moments in the paramagnetic region overlapping with the magnetocaloric effect of the first-order phase transition. Additionally, the first-order phase transition is not completed even in fields up to 20T leading to a non-saturating behavior of ΔTad. Measurements in different pulsed fields reveal that the first-order phase transition cannot follow the fast field changes as previously assumed, resulting in a distinct field-dependent hysteresis in ΔTad.

Journal or Publication Title: Journal of Magnetism and Magnetic Materials
Journal volume: 477
Classification DDC: 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
500 Naturwissenschaften und Mathematik > 530 Physik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
Date Deposited: 11 Sep 2020 13:19
Last Modified: 11 Sep 2020 15:08
DOI: 10.25534/tuprints-00013409
Related URLs:
URN: urn:nbn:de:tuda-tuprints-134094
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/13409
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