Observation of a flux closure state in NiFe/IrMn exchange biased rings

Abstract

The magnetic behaviors of NiFe/IrMn exchange biased rings were investigated by studying the flux closure state of a kinked hysteresis loop. The reversal of magnetization was the cause behind the obtaining of kinked hysteresis loop. The transition of the loop from a single domain state to a flux closure state, and then its continuation onto the opposite single domain present on the other side of the loop, was also discussed.