Exploring the magnetic exchange couplings in ferrite thin films

Ferrites are of upmost interest in many research fields such as spintronics and photocatalysis. In particular spinel ferrites (AFe2O4) and iron garnets (A3Fe5O12) due to their unique ferrimagnetic, ferroelectric, multiferroic, or photoconductive behaviour. These compounds are known for their complex magnetic behaviour and structural and magnetic phase transitions, which may change depending on film thickness and growth conditions. Here we want to access the element specific magnetic properties of epitaxial (Fe,Cr,Ni)3O4(111) and (Tm,Er)Fe5O12(111) layers to determine the impact of composition on the local magnetic properties (exchange couplings and anisotropy) of these iron oxides. The element specific magnetic measurements will be realized on ID32 beamline using the setup that enables dichroic measurements under various conditions (temperature, magnetic field).