Abstract
The hysteresis loops of amorphous Fe80B20, Fe40Ni40B20, and Co58Ni10Fe5Si11B16 alloys are investigated before and after various heat treatments in zero, dc, and ac magnetic fields and under different stress conditions. After definite treatments wasp-waisted or shifted hysteresis loops appear. A qualitative analysis of the results shows that the domain structure originally determined by stresses is stabilized by the formation of induced anisotropies during the heat treatment.
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