Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model
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 delta in the Tilley-Zeks model. The free energy o...
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| Format: | Article |
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2003
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| author | Chew, Khian Hooi Chan, H.L.W. Ishibashi, Y. Shin, F.G. |
| author_facet | Chew, Khian Hooi Chan, H.L.W. Ishibashi, Y. Shin, F.G. |
| author_sort | Chew, Khian Hooi |
| collection | UM |
| description | 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 delta 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 ate 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. |
| first_indexed | 2024-03-06T05:20:44Z |
| format | Article |
| id | um.eprints-8204 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:20:44Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | um.eprints-82042019-08-27T07:35:34Z http://eprints.um.edu.my/8204/ Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model Chew, Khian Hooi Chan, H.L.W. Ishibashi, Y. Shin, F.G. QC Physics 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 delta 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 ate 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. 2003 Article PeerReviewed Chew, Khian Hooi and Chan, H.L.W. and Ishibashi, Y. and Shin, F.G. (2003) Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model. Journal of the Physical Society of Japan, 72 (11). pp. 2972-2978. ISSN 0031-9015, DOI https://doi.org/10.1143/jpsj.72.2972 <https://doi.org/10.1143/jpsj.72.2972>. http://jpsj.ipap.jp/link?JPSJ/72/2972/ 10.1143/jpsj.72.2972 |
| spellingShingle | QC Physics Chew, Khian Hooi Chan, H.L.W. Ishibashi, Y. Shin, F.G. Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model |
| title | Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model |
| title_full | Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model |
| title_fullStr | Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model |
| title_full_unstemmed | Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model |
| title_short | Effective landau-devonshire-type theory of phase transitions in ferroelectric thin films based on the tilley-zeks model |
| title_sort | effective landau devonshire type theory of phase transitions in ferroelectric thin films based on the tilley zeks model |
| topic | QC Physics |
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