화학공학소재연구정보센터
Journal of Materials Science, Vol.47, No.4, 1780-1786, 2012
Pyroelectric properties of a ferroelectric superlattice with surface transition layers
The transverse Ising model within the framework of the mean-field theory is used to investigate a ferroelectric superlattice composed of two different alternating ferroelectric slabs A and B, with the surface transition layer within each slab and an antiferroelectric interfacial coupling between two slabs. The combined influence of the surface transition layer and antiferroelectric interfacial coupling on the pyroelectric properties is discussed in detail. The results show that the pyroelectric properties of a ferroelectric superlattice present some interesting phenomena because of the existence of surface transition layer.