A technological breakthrough often requires the discovery of a new material with unprecedented physical properties. Ferromagnetic materials for example, enable a wide range of technologies with diverse applications ranging from energy production to computer hardware, memory storage, and transportation. As such, intense efforts are pursued worldwide to improve the magnetic properties of known materials, by, for example, reducing their economic or environmental cost, or to find new magnetic materials altogether. The search for entirely new families of ferromagnetic compounds is challenging, and, as a result, efforts are often focused on already known families that can be further improved. Accelerating material discovery remains one of the greatest challenges in material research.