Phase transitions, phase coexistence, and piezoelectric switching behavior in highly strained BiFeO(3) films.
basic_science · Level V
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- Record sourced from PubMed, PMID 23847158.
- Also identified by DOI 10.1002/adma.201302066.
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Abstract
Highly strained BiFeO3 films transition into a true tetragonal state at 430 °C but remain polar to much higher temperatures (∼800 °C). Piezoelectric switching is only possible up to 300 °C, i.e., at temperatures for which strain stabilizes the stripe-like coexistence of multiple polymorphs.