On 15 May 2015, the Advanced Functional Materials journal published the article Controllable Broadband Absorption in the Mixed Phase of Metamagnets, written by Matej Pregelj, Andrej Zorko and Matjaž Gomilšek from the Condensed Matter Physics (F5) department at the Jožef Stafan Institute, in collaboration with partners from Switzerland, Germany and Moldova. The article reveals the ability of metamagnetic materials to absorb electromagnetic radiation across an extremely broad frequency range. The effect is controlled by an external magnetic field, which actuates a mixed ferro/antiferromagnetic phase, where the absorption in the Cu3Bi(SeO3)2O2Br system extends over at least nine orders of the frequency scale. Considering that artificial metamagnets (magnetic multilayers) allow for direct control over the required magnetic field, a novel way of tuning the material’s functional properties is imminent.