FeFeGa

FeFeGa is an iron-gallium alloy system belonging to the ferromagnetic intermetallic family, known for exhibiting magnetostrictive properties—the ability to change shape in response to magnetic fields. This material is primarily studied for magnetostrictive actuator and sensor applications where precise magnetic-mechanical coupling is required, offering advantages over competing magnetostrictive materials like Terfenol-D in terms of cost and availability, though it typically operates under more limited temperature and field conditions.