A Mossbauer study of some rhodium-rich Rh-Pd alloys containing 1% Fe

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Abstract
Hyperfine field measurements for iron in three rhodium-rich Rh-Pd alloys have been made at temperatures in the range 4.2 K to 120 K in applied magnetic fields of up to 50 kOe. The data have been interpreted in terms of the gradual formation of a spin-compensated state at low temperatures and values for the characteristic temperature Tk associated with this state have been obtained for two of the alloys. The behaviour of the alloy containing 0.9 at.% Fe in Rh0.69Pd0.31 is complicated by the onset of magnetic ordering at about 2 K. The data for this alloy are tentatively interpreted in terms of the formation and subsequent destruction of the spin-compensated state by an effective magnetic field comprising the applied field and an induced exchange field