Microstructure-dependent magnetic properties of iron silicon single, bi- and oligo-crystals measured with a miniaturised Single-Sheet-Tester

Electrical steel is the most commonly used soft magnetic material in electrical energy conversion and transmission, its demand expected to increase with need for electrification of transportation sector transition renewable combat climate change. Although iron silicon has been more than 100 years, some fundamental relationships between microstructure performance remain vague, especially regard role crystal defects such as grain boundaries dislocations that are induced during final cutting step process chain. In this paper we present first results a new approach quantify effects orientation, deformation on properties single, bi- oligo-crystals using miniaturised Single-Sheet-Tester. way, were able better resolve orientation-dependent polarisation curves at low field strengths, revealing an additional intersection medium hard axis. Furthermore, distinguish different structures – from single tangles localised twins coercivity, remanence susceptibility. We also found our particular boundary predominately 41° (4912¯) misorientation strongly reduces remanence.