圧延方向および直角方向に切り出した方向性けい素鋼板の消磁応力効果

概要

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When the stress applied to ferromagnetic materials after demagnetization is changed, the magnetic susceptibilities of their initial magnetization curves increase more than those without any stress change after demagnetization. This phenomenon is called the demagnetization-stress effect. The demagnetization-stress effects on grainoriented Si-Fe sheets cut parallel (L-sample) and perpendicular (T-sample) to the specimen's rolling direction were investigated. Observation of the stress effect in the L-sample showed that its magnetization increment ratio was up to 130%. Hardly any demagnetization-stress effects was observed in the T-sample. However, when a biasing tensile stress of 10 Mpa was applied to the sample, the demagnetization-stress effect was observed in the T-sample. The differences between the properties the sample in these conditions can be explained by taking account of their domain structures during their magnetization process.
社団法人日本磁気学会の論文
1998-04-15