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Stability of a ferroelectric phase with electrical domains in multilayers

Mısırlıoğlu, Burç (2009) Stability of a ferroelectric phase with electrical domains in multilayers. Applied Physics Letters, 94 (17). ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.3129872

Abstract

Multilayer BaTiO3-SrTiO3 and PbTiO3-SrTiO3 structures with different electrical domain states are studied using a Landau-Ginzburg-Devonshire free energy. Polarizations in the layers are computed for multidomain and single-domain states where the paraelectric-to-ferroelectric volumetric layer ratio is varied. It is shown that the ferroelectric layers with electrical domains are thermodynamically more stable than the single-domain ferroelectric state. High domain wall energies result in the stabilization of the paraelectric state in the ferroelectric layers for large depolarizing fields. It is concluded that the stability of single-domain state ferroelectric layers correspond to a very small paraelectric-to-ferroelectric ratio after which multidomain ferroelectric state is favored.

Item Type:Article
Uncontrolled Keywords:barium compounds; electric domain walls; ferroelectric materials; free energy; lead compounds; multilayers; strontium compounds
Subjects:Q Science > QC Physics > QC501-766 Electricity and magnetism
Q Science > QC Physics > QC310.15 Thermodynamics
Q Science > QC Physics
Q Science > QC Physics > QC176-176.9 Solids. Solid state physics
ID Code:13675
Deposited By:Burç Mısırlıoğlu
Deposited On:13 Jan 2010 22:08
Last Modified:25 May 2011 14:09

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