Influence of the surface transition layers on the pyroelectric properties of a ferroelectric bilayer film

Based on the transverse Ising model within the framework of the mean-field approximation, a ferroelectric bilayer film composed of two different slabs, with the surface transition layer within each constituent slab and a ferroelectric interfacial coupling between two slabs, is investigated. The influence of the surface transition layer on the pyroelectric properties of a bilayer film is discussed in detail. The results show that the pyroelectric properties of a bilayer film embody show some interesting phenomena on account of the presence of surface transition layer.

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