Surface state on first-order ferroelectrics
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Springer Berlin / Heidelberg
2009
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my.unimap-66142009-07-29T08:38:16Z Surface state on first-order ferroelectrics Junaidah, Osman Tilley, David Reginald Rosy, Teh Ishibashi, Y. Mohamad Nazri, Abdul Halif Khian, Hooi Chew Ferroelectricity Polarization (Electricity) Ferroelectricity Landau theory Link to publisher's homepage at http://www.springerlink.com In the presence of a surface the Landau-Devonshire equations of ferroelectricity must be extended to include a boundary condition. For a ferroelectric with a second-order transition in the case when the polarization p(z) increases at the surface, it is well known that a surface state occurs in a range of temperature above the bulk critical temperature tCB . Here we explore the corresponding effect for a first-order ferroelectric. We show that a surface state can occur, but only if the surface effect is sufficiently strong. Analytic expressions are derived and illustrated for p(z), the surface value pS =p(0) and the free energy. The transition from the paraelectric state (p=0) to the surface state is first order, and for completeness we establish the dependence of the three critical temperatures (supercooling, thermodynamic and superheating) on a boundary-condition parameter y. In a final section, we derive and illustrate expressions for p(z)in the temperature range t<tCB. 2009-07-29T08:37:41Z 2009-07-29T08:37:41Z 2006 Article European Physical Journal B, vol. 52 (1), July 2006, pages 143-150 1434-6028 (Print) 1434-6036 (Online) http://www.springerlink.com/content/l10041r882v77054/ http://hdl.handle.net/123456789/6614 en Springer Berlin / Heidelberg |
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Malaysia |
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Universiti Malaysia Perlis |
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http://dspace.unimap.edu.my/ |
| language |
English |
| topic |
Ferroelectricity Polarization (Electricity) Ferroelectricity Landau theory |
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Ferroelectricity Polarization (Electricity) Ferroelectricity Landau theory Junaidah, Osman Tilley, David Reginald Rosy, Teh Ishibashi, Y. Mohamad Nazri, Abdul Halif Khian, Hooi Chew Surface state on first-order ferroelectrics |
| description |
Link to publisher's homepage at http://www.springerlink.com |
| format |
Article |
| author |
Junaidah, Osman Tilley, David Reginald Rosy, Teh Ishibashi, Y. Mohamad Nazri, Abdul Halif Khian, Hooi Chew |
| author_facet |
Junaidah, Osman Tilley, David Reginald Rosy, Teh Ishibashi, Y. Mohamad Nazri, Abdul Halif Khian, Hooi Chew |
| author_sort |
Junaidah, Osman |
| title |
Surface state on first-order ferroelectrics |
| title_short |
Surface state on first-order ferroelectrics |
| title_full |
Surface state on first-order ferroelectrics |
| title_fullStr |
Surface state on first-order ferroelectrics |
| title_full_unstemmed |
Surface state on first-order ferroelectrics |
| title_sort |
surface state on first-order ferroelectrics |
| publisher |
Springer Berlin / Heidelberg |
| publishDate |
2009 |
| url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/6614 |
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1643788592201334784 |