Effect of elastic extension on the magnetic hysteresis loops, the magnetostriction, and the specific energy losses of iron silicide single crystals

Conclusions

• 1. An elastic tensile stress applied in an asymmetrical crystallographic direction severely deforms the induction curves and magnetic-hysteresis loops of magnetically-textured iron suicide single crystals. The magnetic permeability falls, the field at which any specified induction is achieved rises, the residual induction falls sharply, and the magnetic hysteresis loops assume a constricted form of the Perminvar type.

• 2. The dynamic energy losses which occur during remagnetization increase with rising stress σ when this stress is oriented at a fairly large angle to the axis of easy magnetization (in particular at an angle of ϕ = 30 °). This is evidently because of the increase in the volume remagnetized by the displacement of the 90 ° domain walls.

• 3. The distortion of the induction curves and magnetic hysteresis loops which occurs under the influence of the stress σ may be understood on the basis of the magnetization and remagnetization processes expounded in [1], which allow for the relative parts played by different energy components at different stages of the process, particularly that of the energy of the demagnetizing field.