中国物理B ›› 2009, Vol. 18 ›› Issue (4): 1658-664.doi: 10.1088/1674-1056/18/4/063

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Combined effect of the transition layer and interfacial coupling on the properties of ferroelectric bilayer film

崔莲1, 吕天全1, 孙普男2   

  1. (1)Center of Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; (2)Center of Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China;Physics Department, Heilongjiang University, Harbin 150080, China
  • 收稿日期:2008-09-01 修回日期:2008-11-17 出版日期:2009-04-20 发布日期:2009-04-20

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)†   

  1. a Center of Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China; b Physics Department, Heilongjiang University, Harbin 150080, China
  • Received:2008-09-01 Revised:2008-11-17 Online:2009-04-20 Published:2009-04-20

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摘要： 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.

关键词: ferroelectric bilayer film, spontaneous polarization, Curie temperature, phase transition

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.

Key words: ferroelectric bilayer film, spontaneous polarization, Curie temperature, phase transition

中图分类号: 

  • 77.55.+f
77.22.Ej (Polarization and depolarization)