A comparison of the effects of rf fields on iron borate and an amorphous metal

A comparison of the results obtained on applying radio frequency fields (59.23 MHz; amplitude 13 Oe) to the soft ferromagnetic amorphous alloy Fe81Si3.5B13.5C2 and a single crystal of the weak ferromagnetic insulator FEBO3 is presented. Spectra were accumulated in switched rf fields experiments in which the rf ON and OFF cycles were synchronised to the two halves of the triangular velocity sweep. Heating effects are found to contribute to the partial spectral collapse observed in both samples when subjected to an rf field, particularly the metallic amorphous alloy.