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Tunable giant magnetocaloric effect with very low hysteresis in Mn3CuN1-xCx

MPG-Autoren
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Born,  N.-O.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Caron,  L.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Felser,  C.
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Born, N.-O., Caron, L., Seeler, F., & Felser, C. (2018). Tunable giant magnetocaloric effect with very low hysteresis in Mn3CuN1-xCx. Journal of Alloys and Compounds, 749, 926-930. doi:10.1016/j.jallcom.2018.03.311.


Zitierlink: http://hdl.handle.net/21.11116/0000-0001-940B-C
Zusammenfassung
The structural, magnetic and magnetocaloric properties of the antiperovskite materials Mn3CuN1-xCx have been studied. Substituting N with C increases the temperature of the magnetostructural transition between a paramagnetic cubic high temperature phase and a ferrimagnetic tetragonal low temperature phase. Furthermore, the first order character of the phase transition is retained upon substitution with a hysteresis below 2 K for all compositions. The magnetostructural transition gives rise to giant magnetocaloric effects in a tunable 30 K temperature range with a maximum entropy change of 11: 8 J/Kkg at a 2 T field change, making these compounds promising for low temperature magnetic refrigeration applications. (C) 2018 Elsevier B.V. All rights reserved.