STRUCTURE AND MAGNETIC-PROPERTIES OF FEAL1-XRHX ALLOYS

The structure and magnetic properties of FeAl1-xRhx alloys have been s tudied by X-ray, magnetization and Mossbauer effect measurements. The crystal structure of these alloys remains in B2 type. However, the sol ubility limits are rather narrow for both sides. On the Al-rich side, Rh atoms occupy the Fe site and a part of Fe atoms become magnetic. Th ey freeze into a spin-glass state at low temperatures. On the Rh-rich side, Al atoms occupy the Fe site. The Al substitution stabilizes ferr omagnetism, i.e., the Curie temperature increases and the antiferromag netic to ferromagnetic transition temperature decreases.