MAGNETIC AND MICROSTRUCTURAL INVESTIGATIONS OF MELT-SPUN FE(NDPR)B

The magnetic behavior of rapidly solidified FePrB was investigated in the composition range Fe77+xPr15B8-x (0 less-than-or-equal-to x less-t han-or-equal-to 4). Furthermore, the magnetic and microstructural prop erties of Fe(NdPr)B were analyzed in the range Fe78(NdxPr1-x)15B7 (0 l ess-than-or-equal-to x less-than-or-equal-to 1). The temperature depen dence of the critical field was analyzed with a modified form of Brown 's expression for the nucleation field. From this analysis the values for the microstructural parameters, alpha(K) and N(eff), were determin ed which describe the deteriorating effects of the non-ideal microstru cture on the coercivity.