The initial magnetization of alpha-iron at high temperatures

As the inherent crystal anisotropy of iron tends to zero above 600°c the initial magnetization above this temperature is considered in terms of purely rotational movements of the domain vectors from preferential directions determined by applied and internal stresaes. Experimental results on the influence of applied strees on the initial permeability are described. It is shown that the results are in fair agreement with the theoretical predictions.