Effects of the random field on the magnetic behavior of nanowires with core/shell morphology

We have used the effective field theory based on probability distribution method to investigate the hysteresis behavior of the magnetic nanowires with core/shell morphology in a random magnetic field. The hysteresis curves are obtained for different values of the random magnetic field, both ferromagnetic and antiferromagnetic couplings between the shell and the core are considered. A number of characteristic behaviors are find, such as the existence of double or triple hysteresis loops for appropriate values of the system parameters affected by the random magnetic field, temperature, and interfacial coupling.

► The hysteresis behavior of the Ising nanowires has been studied by EFT.
► The effects of the random field on the hysteresis loops have been examined.
► The hysteresis loops are obtained for different values of the interfacial coupling constant.
► The triple hysteresis loops occur for the larger antiferromagnetic coupling constant.
► The dependence of the coercive field on the temperature is investigated.