Measurements of core loss and de magnetic properties are reported on insulated and uninsulated smooth, high pack-factor iron-based amorphous metal ribbon. Higher losses measured on uninsulated ribbons, wound with winding tensions of 5 N and above, are found to be associated with macroscopic interlaminar eddy currents due to numerous shorts between laminations.
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Nathasingh et al. (1984) studied this question.
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