TY - JOUR
T1 - Tuneable giant magnetocaloric effect in (Mn,Fe)2(P,Si) materials by Co-B and Ni-B co-doping
AU - Nguyên, V.T.
AU - van Dijk, Niels Harmen
AU - Brück, Ekkes
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Co substitution
KW - FeP
KW - Magnetic refrigeration
KW - Magnetocaloric effect
KW - Ni substitution
KW - OA-Fund TU Delft
UR - http://www.scopus.com/inward/record.url?scp=85011698056&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:11a8b909-0bf2-4d80-b71c-a690dcd01996
U2 - 10.3390/ma10010014
DO - 10.3390/ma10010014
M3 - Article
AN - SCOPUS:85011698056
SN - 1996-1944
VL - 10
JO - Materials
JF - Materials
IS - 1
M1 - 14
ER -