Print Email Facebook Twitter Tuning Giant Magnetocaloric Materials Title Tuning Giant Magnetocaloric Materials: A Study of (Mn,Fe)2(P,Si) and NiCoMnTi Heusler Compounds Author Zhang, F. (TU Delft RST/Fundamental Aspects of Materials and Energy) Contributor Brück, E.H. (promotor) van Dijk, N.H. (promotor) Degree granting institution Delft University of Technology Date 2022-09-19 Abstract Solid‐state caloric effects as intrinsic responses from different physical external stimuli (magnetic‐, uniaxial stress‐, pressure‐ and electronic‐ fields) have been evaluated near magnetic phase transformations. In the last decades the magnetically driven caloric changes in various magnetocaloric materials (MCMs) have been exploited extensively for magnetic refrigeration and magnetic heat pumping scenarios near room temperature. This thesis systematically investigates the magnetocaloric effect (MCE) for the representative magnetoelastic (Mn,Fe)2(P,Si) system. Special emphasis has been directed towards the giant MCE in nanoscale particles and the influence of doping with elements that show a strong electronegativity on the magnetic properties of this metal‐metalloid system. Meanwhile, two optimization strategies (decoupling and light element B doping) are successfully introduced to regulate the thermal hysteresis ΔThys, the ferromagnetic phase transition TC and improve the reversibility of the MCE for magnetostructural transition in the all‐d‐metal NiCoMnTi Heusler alloys. Subject Magnetocaloric effectphase transitionmagnetic refrigeration(Mn,Fe)2(P,Si)Heusler compounds To reference this document use: https://doi.org/10.4233/uuid:88a142a9-3ac4-4d97-ab1c-1cf811b07abb ISBN 978‐94‐6458‐555‐1 Part of collection Institutional Repository Document type doctoral thesis Rights © 2022 F. Zhang Files PDF PhD_Thesis_F_Zhang.pdf 93.5 MB Close viewer /islandora/object/uuid:88a142a9-3ac4-4d97-ab1c-1cf811b07abb/datastream/OBJ/view