Exchange bias influence on hysteresis of magnetization of a ferromagnetic film in contact with an antiferromagnet

The transformation of the hysteresis field dependence of magnetization of a ferromagnetic thin layer contacting with a magnetic-hard antiferromagnet is considered. It is shown that this interaction leads to a shift of the hysteresis loop from the symmetric configuration with respect to the field (exchange bias). Furthermore, there occur a qualitative change of the hysteresis loop shape and its subsequent disappearance: the field dependence of magnetization becomes monotonous and one-valued with increasing the exchange interaction.