Bulk ferromagnetic quasicrystals emerge without rapid quenching, unlocking stable magnetic studies

Ferromagnetism has long been studied in a wide range of periodic crystals and amorphous materials. In quasicrystals (QCs), which possess long-range quasiperiodic order and unconventional rotational symmetries, such as 10-fold symmetry, ferromagnetism remained elusive until recently, when it was finally realized in gold (Au)-based icosahedral QCs. These discoveries establish QCs as a third platform for magnetism beyond periodic crystals and amorphous materials.