noun
ferrimagnetic substance
Technical term in physics for materials exhibiting ferrimagnetism, where magnetic moments of sublattices are unequal and opposite, resulting in net magnetization.
フェリ磁性体は、フェライトなどに代表される磁性材料です。
Ferrimagnetic substances are magnetic materials typified by ferrites.
From English 'ferrimagnetic' (ferri- from Latin ferrum 'iron') + 磁性体 (magnetic substance).