Demagnetization effects in polycrystalline silicon iron with coating

This paper discusses the effects of demagnetization on domain configurations of HI-B sheets with stress coating. Demagnetization frequency was varied between 5 Hz and 1 KHz. As frequency increased, considerable refinement of main domains resulted, especially for wide domains. Its extent was a maximum close to 10 Hz and a minimum close to 100 Hz. Experimental results are discussed using a multiparametric model considering grain-to-grain interactions. In principle, calculated and experimental results are in good agreement.