The growth condition for ferroelectric domains of a subcritical size

Growth conditions for repolarization nuclei in Pb(Zr 1-x Ti x )O 3 polycrystalline ferroelectric films with frequency dependence of coercive field of ln(ν/ν 0 )∼1/E c 2 are studied. The main contribution to polarization switching is provided by the formation of nuclei of a critical size by means of...

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Bibliographic Details
Published in:Ferroelectrics 2022-06, Vol.590 (1), p.19-26
Main Author: Belov, A. Yu
Format: Article
Language:English
Subjects:
Coercivity
domain structure
Electrode polarization
Electrodes
Ferroelectric domains
Ferroelectric materials
Ferroelectricity
Ferroelectrics
Free energy
Growth conditions
Nuclei
PZT
Switching
thin films
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Summary:Growth conditions for repolarization nuclei in Pb(Zr 1-x Ti x )O 3 polycrystalline ferroelectric films with frequency dependence of coercive field of ln(ν/ν 0 )∼1/E c 2 are studied. The main contribution to polarization switching is provided by the formation of nuclei of a critical size by means of thermal fluctuations. However, near electrode edges the growth of nuclei of a subcritical size is shown to be possible. Free energy release accompanying the growth of a nucleus does not depend on its size. This enables rapid growth of nuclei near electrode edges and explains experimentally observed dependence of the limiting frequency for polarization switching on the electrode geometry.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2022.2037935