Abstract

The high-temperature susceptibility is evaluated within the Bethe–Peierls approximation for a two-dimensional lattice in the presence of a random magnetic field with Gaussian distribution. The susceptibility of a plane is used to obtain the transition temperature of coupled planes when the interplanar coupling is weak. It is shown that the transition temperature of the coupled planes falls below the result for uncoupled films at some values of the average spacer thickness.

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