Control of magnetocalorics by interface engineering in MAB phase and antiperovskite thin film model systems (B02)

点击翻译按钮获取中文摘要

Prototype thin film systems and multilayers of the magnetocaloric materials (Mn3GaC phase and Fe2AlB2 MAB phase) with thin FM and AFM layers will be prepared. The magnetocaloric properties will be controlled by exchange coupling between the magnetocaloric material and a ferromagnetic (FM) or antiferromagnetic (AFM) material. To maximize the adiabatic temperature change and tune the transition temperature different elemental dopants will be tested and the magnetic response characterized together with projects A03, B05 and A04. In this way, we aim to match the AFM/FM and FM/PM phase transitions in Mn3GaC and engineer the quasi 2nd order phase transition in Fe2AlB2 towards a 1st order transition for magnetic refrigeration in close interaction with project B03.