Interfacial polarization and pyroelectricity in antiferrodistortive structures induced by a flexoelectric effect and rotostriction

@article{Morozovska2012InterfacialPA,
  title={Interfacial polarization and pyroelectricity in antiferrodistortive structures induced by a flexoelectric effect and rotostriction},
  author={Anna N. Morozovska and Eugene A. Eliseev and Maya D. Glinchuk and Long-qing Chen and Venkatraman Gopalan},
  journal={Physical Review B},
  year={2012},
  volume={85},
  pages={094107}
}
Theoretical analysis based on the Landau-Ginzburg-Devonshire theory is used to show that the combined effect of flexoelectricity and rotostriction can lead to a spontaneous polarization and pyroelectricity in the vicinity of antiphase boundaries, structural twin walls, surfaces, and interfaces in the octahedrally tilted phase of otherwise nonferroelectric perovskites such as CaTiO${}_{3}$, SrTiO${}_{3}$, and EuTiO${}_{3}$. As an example, we numerically demonstrate a spontaneous polarization and… 

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