Domain behavior in SmCo3.5Cu1.5 single crystal

Abstract

The behavior of the magnetic domains in SmCo_3.5Cu_1.5 single crystal as a function of applied field, temperature, and time have been studied. The domain reversal depends strongly on the fluctuation of cobalt and copper concentrations. As the reverse field increases, the domains advance gradually into the copper‐rich regions. Domain shape is found to be a reflection of microstructure at low temperatures. Aftereffects of magnetization were determined directly by domain observations. The domains grow at constant reverse field due to repeated partial nucleations along the parent walls. This behavior is explained by a thermal activation process.