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Dependence of the inverse magnetocaloric effect on the field-change rate in Mn3GaC and its relationship to the kinetics of the phase transition

Scheibel, F. and Gottschall, T. and Skokov, K. and Gutfleisch, O. and Ghorbani-Zavareh, M. and Skourski, Y. and Wosnitza, J. and Çakır, Ö. and Farle, M. and Acet, M. (2015):
Dependence of the inverse magnetocaloric effect on the field-change rate in Mn3GaC and its relationship to the kinetics of the phase transition.
117, In: Journal of Applied Physics, (23), AIP Publishing, p. 233902, ISSN 0021-8979, [Online-Edition: http://dx.doi.org/10.1063/1.4922722],
[Article]

Abstract

We study the dependence of the magnetocaloric effect on the magnetic field-change-rate the first order magnetostructural transition in Mn3GaC by measuring the adiabatic temperature change Delta T at three different time scales: 11mTs(-1), 700mTs(-1), and similar to 1000Ts(-1). We find that the maximum adiabatic temperature-change of about 5 K is reached in the 11mTs(-1) and 700mTs(-1) rates, whereas for the similar to 1000Ts(-1)-rate the transition lags the change in the magnetic field so that the maximum adiabatic temperature-change is not attained.

Item Type: Article
Erschienen: 2015
Creators: Scheibel, F. and Gottschall, T. and Skokov, K. and Gutfleisch, O. and Ghorbani-Zavareh, M. and Skourski, Y. and Wosnitza, J. and Çakır, Ö. and Farle, M. and Acet, M.
Title: Dependence of the inverse magnetocaloric effect on the field-change rate in Mn3GaC and its relationship to the kinetics of the phase transition
Language: English
Abstract:

We study the dependence of the magnetocaloric effect on the magnetic field-change-rate the first order magnetostructural transition in Mn3GaC by measuring the adiabatic temperature change Delta T at three different time scales: 11mTs(-1), 700mTs(-1), and similar to 1000Ts(-1). We find that the maximum adiabatic temperature-change of about 5 K is reached in the 11mTs(-1) and 700mTs(-1) rates, whereas for the similar to 1000Ts(-1)-rate the transition lags the change in the magnetic field so that the maximum adiabatic temperature-change is not attained.

Journal or Publication Title: Journal of Applied Physics
Volume: 117
Number: 23
Publisher: AIP Publishing
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 11 Jan 2016 08:42
Official URL: http://dx.doi.org/10.1063/1.4922722
Identification Number: doi:10.1063/1.4922722
Funders: This work was supported by Deutsche Forschungsgemeinschaft (SPP 1599)., We acknowledge the support of the HLD at HZDR, member of the European Magnetic Field Laboratory (EMFL).
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