Combined effect of the transition layer and interfacial coupling on the properties of ferroelectric bilayer film
Sun Pu-Nan(孙普男)a)b), Cui Lian(崔莲)a), and ü Tian-Quan(吕天全)a)†
a Center of Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; b Physics Department, Heilongjiang University, Harbin 150080, China
Abstract Within the framework of modified Ginzburg--Landau--Devonshire phenomenological theory, a ferroelectric bilayer film with a transition layer within each constituent film and an interfacial coupling between two materials has been studied. Properties including the Curie temperature and the spontaneous polarization of a bilayer film composed of two equally thick ferroelectric constituent films are discussed. The results show that the combined effect of the transition layer and the interfacial coupling plays an important role in explaining the interesting behaviour of ferroelectric multilayer structures consisting of two ferroelectric materials.
Received: 01 September 2008
Revised: 17 November 2008
Accepted manuscript online:
Sun Pu-Nan(孙普男), Cui Lian(崔莲), and ü Tian-Quan(吕天全) Combined effect of the transition layer and interfacial coupling on the properties of ferroelectric bilayer film 2009 Chin. Phys. B 18 1658
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