Enhanced Piezoelectric Response due to Polarization Rotation in Cobalt-Substituted BiFeO<sub>3</sub> Epitaxial Thin Films.
basic_science · Level V
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- Record sourced from PubMed, PMID 27554138.
- Also identified by DOI 10.1002/adma.201602450.
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Abstract
Polarization rotation induced by an external electric field in piezoelectric materials such as PbZr<sub>1-</sub><sub>x</sub> Ti<sub>x</sub> O<sub>3</sub> is generally regarded as the origin of their large piezoelectric responses. Here, the piezoelectric responses of high-quality cobalt-substituted BiFeO<sub>3</sub> epitaxial thin films with monoclinic distortions are systematically examined. It is demonstrated that polarization rotation plays a crucial role in improving the piezoelectric responses in this material.