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Materials 2017, 10(1), 14;

Tuneable Giant Magnetocaloric Effect in (Mn,Fe)2(P,Si) Materials by Co-B and Ni-B Co-Doping

Fundamental Aspects of Materials and Energy, Department of Radiation Science and Technology, Delft University of Technology, Mekelweg 15, Delft 2629 JB, The Netherlands
Author to whom correspondence should be addressed.
Academic Editor: Sofoklis Makridis
Received: 25 October 2016 / Revised: 5 December 2016 / Accepted: 15 December 2016 / Published: 27 December 2016
(This article belongs to the Section Energy Materials)
Full-Text   |   PDF [2012 KB, uploaded 27 December 2016]   |  


The influence of Co (Ni) and B co-doping on the structural, magnetic and magnetocaloric properties of (Mn,Fe) 2 (P,Si) compounds is investigated by X-ray diffraction (XRD), differential scanning calorimetry, magnetic and direct temperature change measurements. It is found that Co (Ni) and B co-doping is an effective approach to tune both the Curie temperature and the thermal hysteresis of (Mn,Fe) 2 (P,Si) materials without losing either the giant magnetocaloric effect or the positive effect of the B substitution on the mechanical stability. An increase in B concentration leads to a rapid decrease in thermal hysteresis, while an increase in the Co or Ni concentration hardly changes the thermal hysteresis of the (Mn,Fe) 2 (P,Si) compounds. However, the Curie temperature decreases slowly as a function of the Co or Ni content, while it increases dramatically for increasing B concentration. Hence, the co-substitution of Fe and P by Co (Ni) and B, respectively, offers a new control parameter to adjust the Curie temperature and reduce the thermal hysteresis of the (Mn,Fe) 2 (P,Si) materials. View Full-Text
Keywords: magnetic refrigeration; magnetocaloric effect; Fe2P; Co substitution; Ni substitution magnetic refrigeration; magnetocaloric effect; Fe2P; Co substitution; Ni substitution

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Thang, N.V.; Dijk, N.H.; Brück, E. Tuneable Giant Magnetocaloric Effect in (Mn,Fe)2(P,Si) Materials by Co-B and Ni-B Co-Doping. Materials 2017, 10, 14.

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