Print Email Facebook Twitter Effect of Co and Ni doping on the structure, magnetic and magnetocaloric properties of Fe-rich (Mn,Fe)2(P,Si) compounds Title Effect of Co and Ni doping on the structure, magnetic and magnetocaloric properties of Fe-rich (Mn,Fe)2(P,Si) compounds Author Kiecana, A. (TU Delft RST/Fundamental Aspects of Materials and Energy) Batashev, I. (TU Delft RST/Fundamental Aspects of Materials and Energy) Dugulan, A.I. (TU Delft RID/TS/Instrumenten groep) Kwakernaak, C. (TU Delft Team Maria Santofimia Navarro) Pieter, L. (Student TU Delft) Zhang, F. (TU Delft RST/Fundamental Aspects of Materials and Energy) van Dijk, N.H. (TU Delft RST/Fundamental Aspects of Materials and Energy) Brück, E.H. (TU Delft RST/Fundamental Aspects of Materials and Energy) Date 2022 Abstract The effect of Co and Ni doping on the structure, magnetic and magnetocaloric properties of Fe-rich (Mn,Fe)2(P,Si) compounds was studied. With increasing Co and Ni content, both the Curie temperature (Tc) and the thermal hysteresis (ΔThys) decreased, whereas the hexagonal P-62 m crystal structure was maintained. A pronounced reduction in hysteresis was observed upon Co doping, while a significant reduction in Curie temperature was found upon Ni doping. Mössbauer spectroscopy measurements and DFT calculations indicated the substitution of Fe at the 3f site for both Co and Ni doping. Rietveld refinement of the X-ray diffraction data showed that Co substitute atoms in the main phase and the impurity phase, while Ni exhibits an affinity to the main phase. Magnetization measurements on the Co doped samples revealed an increase in magnetization for 2 at.% of Co, followed by a decrease for higher concentrations. DFT calculations showed that the magnetic moment on the 3f site is enhanced by Co substitution, whereas an opposite trend was observed for Ni substitution. Subject (Mn,Fe)(P,Si)Magnetic propertiesMagnetocaloric materialsMössbauer spectroscopy To reference this document use: http://resolver.tudelft.nl/uuid:3145fdfe-e356-476e-8120-52871e4a8925 DOI https://doi.org/10.1016/j.jmmm.2022.169710 ISSN 0304-8853 Source Journal of Magnetism and Magnetic Materials, 561 Part of collection Institutional Repository Document type journal article Rights © 2022 A. Kiecana, I. Batashev, A.I. Dugulan, C. Kwakernaak, L. Pieter, F. Zhang, N.H. van Dijk, E.H. Brück Files PDF 1_s2.0_S0304885322006187_main.pdf 4.29 MB Close viewer /islandora/object/uuid:3145fdfe-e356-476e-8120-52871e4a8925/datastream/OBJ/view