TY - JOUR
T1 - Effect of the heat treatment on the microstructure, magnetism and magnetocaloric effect in Fe-rich (Mn,Fe)y(P,Si) melt-spun ribbons
AU - Kiecana, A.
AU - Kwakernaak, C.
AU - van Dijk, N. H.
AU - Brück, E.
PY - 2023
Y1 - 2023
N2 - The effect of the heat treatment on the magnetism, magnetocaloric effect and microstructure formation has been systematically studied in Fe-rich (Mn,Fe)y(P,Si) melt-spun ribbons (1.80 ≤ y ≤ 2.00). XRD, SEM and EDS measurements demonstrate that a metal deficiency prompts the stable (Mn,Fe)Si phase, whereas in the metal-rich region the (Mn,Fe)3Si phase is formed. It is found that the annealing temperature influences the composition and lattice parameters of the (Mn,Fe)y(P,Si) alloys, which greatly affects the Curie temperature (TC). For the optimal metal/non-metal ratio y the magnetic entropy change (|ΔSm|) is found to increase from 5.5 to 15.0 Jkg−1K−1 in a magnetic field change of 2 T by varying the annealing temperature from 1313 to 1433 K, indicating an enhancement of the first-order magnetic transition (FOMT). The presented results reveal that the secondary phase and magnetic properties in the (Mn,Fe)y(P,Si) system can be tuned by varying the annealing temperature and by adjusting the metal/non-metal ratio y.
AB - The effect of the heat treatment on the magnetism, magnetocaloric effect and microstructure formation has been systematically studied in Fe-rich (Mn,Fe)y(P,Si) melt-spun ribbons (1.80 ≤ y ≤ 2.00). XRD, SEM and EDS measurements demonstrate that a metal deficiency prompts the stable (Mn,Fe)Si phase, whereas in the metal-rich region the (Mn,Fe)3Si phase is formed. It is found that the annealing temperature influences the composition and lattice parameters of the (Mn,Fe)y(P,Si) alloys, which greatly affects the Curie temperature (TC). For the optimal metal/non-metal ratio y the magnetic entropy change (|ΔSm|) is found to increase from 5.5 to 15.0 Jkg−1K−1 in a magnetic field change of 2 T by varying the annealing temperature from 1313 to 1433 K, indicating an enhancement of the first-order magnetic transition (FOMT). The presented results reveal that the secondary phase and magnetic properties in the (Mn,Fe)y(P,Si) system can be tuned by varying the annealing temperature and by adjusting the metal/non-metal ratio y.
KW - (Mn,Fe)(P,Si)
KW - Magnetic properties
KW - Magnetocaloric materials
UR - http://www.scopus.com/inward/record.url?scp=85140058699&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2022.167635
DO - 10.1016/j.jallcom.2022.167635
M3 - Article
AN - SCOPUS:85140058699
SN - 0925-8388
VL - 932
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 167635
ER -