ErFeNi

ErFeNi is a ternary intermetallic compound combining erbium (a rare earth element), iron, and nickel. This material family is primarily of research interest for applications requiring magnetic properties, thermal stability, or specialized electronic functionality that benefit from rare earth incorporation. While not widely deployed in high-volume industrial production, ErFeNi and similar rare earth-transition metal compounds are investigated for high-performance magnetic devices, permanent magnets, and magnetostrictive applications where the unique electronic structure of rare earths can be leveraged.