Abstract
High-resolution neutron dark-field imaging has been applied to study magnetic domains in sheets of commercial grain-oriented electrical steel enveloped in an insulating layer. The resulting images have been compared to those obtained using conventional magnetic powder patterns and a clear correlation has been found, with the neutron technique providing complementary information about the internal structures of the material. An understanding of the magnetic structure of these materials is important for improving the performance characteristics – particularly minimizing core loss – in the electrical devices in which they are used.
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