Temperature-Dependent Magnetic Domain Evolution in Noncollinear Ferrimagnetic FeV2O4Thin Films

Recently, spin spiral type multiferroic materials are widely investigated for their unusual properties and potential applications in memory technology, sensors, and field-effect transistors. It is of interest to investigate surface magnetism in iron vanadate (FeV2O4) due to varying physical properties. Here, the temperature-dependent magnetic domain evolution has been systematically investigated by using cryogenic magnetic force microscopy (MFM). We find irregular and asymmetrical magnetic domain coarsening and shrinking as a function of temperature and also different domain evolution between field cooled and zero field cooled MFM. These findings provide an improved understanding of physical properties related to domain structures.