Magnetic Domain Patterns on Single-Crystal Iron Whiskers

Abstract

Ferromagnetic domain patterns on single-crystal whiskers of pure iron have been studied by using the Bitter powder technique. Patterns have been observed on both magnetized and unmagnetized specimens and in both cases straightforward interpretations of the patterns can be given. Whiskers with axes along the [111] and [100] directions have been studied and observations indicate that crystals with perfect geometry have a very simple domain structure in the unmagnetized state.