What question did this study set out to answer?

To establish a theoretical Landau-theory-based model explaining how interactions between charged lattice defects and opposing domains drive ferroelectric fatigue.

December 1, 1993Ferroelectrics

Model of ferroelectric fatigue due to defect/domain interactions

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To establish a theoretical Landau-theory-based model explaining how interactions between charged lattice defects and opposing domains drive ferroelectric fatigue.
Formulated an analytical framework applying Landau theory to describe interactions between charged lattice defects and polar ferroelectric domains.
Modeled electromechanical stress distributions, self-trapping potentials, and defect-plane alignment during repeated switching cycles.
Ionic defects polarize adjacent lattice sites to induce self-trapping potentials, promoting perpendicular defect planes that separate opposing domains in self-stabilizing structures.
Charge accumulation at defect planes degrades macroscopic responses into weakly ferroelectric, paraelectric, or linear behavior.
Defect activation energy increases with charge buildup, yielding the characteristic logarithmic decay of polarization as switching cycles increase.

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Implication

Theoretical study uncovers ferroelectric fatigue mechanisms driven by defect-domain interactions, explaining logarithmic polarization decay across thin films and bulk materials.

Cite This Study

Ciaran J. Brennan (1993) studied this question.

synapsesocial.com/papers/6a85c10202ac45e32cc92e40 https://doi.org/10.1080/00150199308008705

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Implication

Theoretical study uncovers ferroelectric fatigue mechanisms driven by defect-domain interactions, explaining logarithmic polarization decay across thin films and bulk materials.

Model of ferroelectric fatigue due to defect/domain interactions

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Discussion

Implication

Cite This Study

Model of ferroelectric fatigue due to defect/domain interactions

Key Points

Discussion

Implication

Cite This Study

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