Studies on Magnetization Reversal in Submicron Wires and Domain Wall Behaviors
Several recent experimental studies on microstructured samples of ferromagnetic materials are described. Magnetization reversal phenomena were investigated on submicron wire samples consisting of two magnetic layers with different coercivities utilizing the giant magnetorersistance (GMR) effect. From resistivity measurements, the domain wall movements are sensitively monitored and the velocity of propagation is determined. Experiments to estimate the contribution of domain wall to the resistivity are also introduced.