Effective Landau-Devonshire-Type Theory of Phase Transitions in Ferroelectric Thin Films Based on the Tilley-Zeks Model
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概要
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A generalized thermodynamic theory (effective Landau-Devonshire-type theory) for ferroelectric thin films undergoing second order phase transition is developed within the framework of the Landau-Ginzburg theory via the concept of extrapolation length δ in the Tilley-Zeks model. The free energy of the Tilley-Zeks model for ferroelectric thin films is cast into a clearer and simpler form from the usual integral expression form using suitable order parameters. The target coefficients A and B for the second order and fourth order terms, respectively, of the free energy are expressed as a function of temperature, film thickness, extrapolation length and other physical parameters. The intrinsic effects of surface on the order of phase transitions are discussed analytically with an emphasis on asymmetric films
- 社団法人日本物理学会の論文
- 2003-11-15
著者
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Shin Franklin
Department Of Applied Physics The Hong Kong Polytechnic University
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Itoh Yuuki
Electrical And Electronic Engineering Department Gifu University
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Chan H.
Department Of Applied Physics The Hong Kong Polytechnic University
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CHEW K.-H.
Department of Applied Physics, The Hong Kong Polytechnic University
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ISHIBASHI Y.
Faculty of Communications, Aichi Shukutoku University
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SHIN F.
Department of Applied Physics, The Hong Kong Polytechnic University
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Chew Khian-hooi
Department Of Applied Physics The Hong Kong Polytechnic University
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Chew K.-h.
Department Of Applied Physics The Hong Kong Polytechnic University
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