The effect of the addition of Nb in Fe-Si alloys was investigated by measur
ing the magnetic properties and investigating the microstructure. Nb enhanc
es (about 10 times) the coercivity and changes the microstructure as well a
s the temperature dependence of the coercivity. There exists indication tha
t Nb enters in the lattice. (C) 2001 Elsevier Science B.V. All rights reser
ved.