Magnetic and magneto-transport properties of metastable Gd/sub x/Nb/sub 1-x/ alloys

Metastable Gd/sub x/Nb/sub 1-x/ alloys over the entire composition range have been realized by co-deposition at room temperature. Structural and magnetic phase diagrams have been determined. The alloys are crystalline bcc (0.00/spl les/x/spl les/0.40), amorphous (0.40/spl les/x/spl les/0.70), and crystalline hcp (0.70/spl les/x/spl les/1.00). Magnetic and magneto-transport measurements show spin glass ordering for x/spl les/0.60, and ferromagnetic ordering with a weak spin glass transition for x>0.60.