Soft magnetic properties of LaCo13 and La(Co, Fe)(13) alloys

LaCo13 and La(Co, Fe)(13) alloys have been prepared and studied as high tem perature, high performance soft magnetic materials. The de magnetic propert ies have been measured over a temperature range of 10-1273 K in fields of 0 to 5 T. Data obtained show that the de magnetic properties (H-c,K-1) of th e La(Co, Fe)(13) bulk alloys are comparable with Fe bulk alloy and T-c = 10 21-1297 K are higher than that of Fe and Hiperco; ac magnetic properties ar e first time reported in a bulk LaCo13 alloy, showing a reasonably higher p ower loss than that of commercial Hiperco alloy. The ac magnetic properties can be improved by making LaCo13 alloys as laminated thin sheets. (C) 1998 American Institute of Physics. [S0021-8979(98)29311-X].