Abstract:
Within the framework of the Landau theory of second-order phase transitions, a ferromagnet/antiferromagnet structure is considered, in which the ferromagnetic and antiferromagnetic layers are connected by exchange interaction. In the vicinity of the Neel temperature, such an interaction leads to a modification of the order parameter of the antiferromagnet. The magnetocaloric effect (isothermal change in magnetic entropy) of the system under consideration is calculated when the magnetization direction of the ferromagnet changes relative to the easy anisotropy axis of the antiferromagnet. The cases of compensated and uncompensated antiferromagnet boundaries are considered. The results obtained suggest the possibility of using ferromagnet/antiferromagnet multilayer for cooling micro- and nanoelectronic devices.
Keywords:magnetic cooling, magnetic proximity effect, antiferromagnets, Neel temperature.
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