MAGNETIC PROPERTIES OF PERMINVAR 



27 



1 2 3 



H 



1 2 



H 



16000 



12000 



8000 



4000 



fO 20 30 40 



H 



Fig. 3 — Upper halves of hysteresis loops of Perminvar (45% Ni — 

 25% Co— 30%, Fe) annealed 



