Dependence of loss on domain-wall spacing in polycrystalline material

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Dependence of loss on domain-wall spacing in polycrystalline material

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Measurements of total power loss and domain-wall spacing have been made on individual grains in polycrystalline specimens of commercial grain-oriented 3% silicon-iron material. The loss per cycle versus frequency characteristic of a grain is found to consist of discrete linear portions, as distinct from the continuous function that has often been reported. These linear portions are found to correspond to different domain configurations. The loss per cycle is shown to be proportional to the domain-wall spacing, which is observed to decrease with increasing frequency.

Inspec keywords: magnetic domains; domain walls; loss measurement; iron alloys

Other keywords: polycrystalline material; loss per cycle; total power loss; domain wall spacing; Si-Fe material

Subjects: Ferromagnetic materials; Studies of specific magnetic materials; Magnetic domain walls and domain structure

References

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