Exploring the magnetic phase diagram of epitaxial rare-earth iron garnets thin films

Rare-earth iron garnets (RIGs), R3Fe5O12 (with R= Y, Tm, Er…) are of high interest in many research fields such as spintronics (small damping parameters, chiral spin textures…), magnonic and photonics (Faraday rotation, optical isolators). Here we want to assess the element specific magnetic properties of epitaxial TmIG and ErIG thin films and to determine the impact of rare-earth substitution and substrate (strain, crystallographic orientation) on the local magnetic exchange couplings in these iron garnets. The element specific magnetic measurements will be realized on the ID32 beamline using the setup that enables dichroic measurements under various conditions (temperature, magnetic field).