Magnetic cluster relaxation in amorphous Fe-Zr alloys

Abstract
The spin-glass and the ferromagnetic transitions of amorphous Fe100x Zrx (7≤x≤12) alloys in a small applied field (13 mT) were investigated by use of Fe57 Mössbauer spectroscopy. The observed linewidth increase over a wide (≊30 K) temperature range both below and above the transition temperature gives clear evidence of a magnetic relaxation.