Synthesis of magnetic ternary alloy nanoparticles towards formulation of magnetocaloric inks for nanoscale additive manufacturing


Complex lattice structure built by laser powder bed fusion of iron powder.

While nanoparticle-dispersions such as silver inks are widely used for printing of 2D conductive paths for electronics and sensor technology, 3D-printing of nanoscale magnetic particles with resolution on the order of 20 nm is yet not existing. However, such a nanoscale technology could lead to new applications for heat exchangers, transformers, and motors, by integrating a magnetocaloric material into the device already during the fabrication process. To enable such a nanoscale 3D-printing technology of magnetocaloric materials, a magnetocaloric ink will be developed in this project.

The focus will be placed on compositionally complex alloys (CCA) nanoparticles (NPs) dispersed in an organic solution. Properties of CCA NPs and their formulation in an ink are widely unknown areas, since – until now – the controlled synthesis of colloidal CCA NPs with targeted elemental composition was not demonstrated. In this project, pulsed laser ablation in liquids (PLAL) of well-characterized compositionally complex alloy targets consisting of five elements, e.g. CrFeCoNiX (X = Mn, Cu), will be carried out in defined liquid-based media to synthesise magnetocaloric quinary transition metal alloy nanoparticles.


  Name Contact
PD Dr. Bilal Gökce
Univ.-Prof. Dr. Bilal Gökce
+49 (0) 202 439 - 5340
M.Sc. Shabbir Tahir
Dr. Carlos Doñate-Buendia