Effect of tetragonal distortion on ferroelectric domain switching: A case study on La-doped BiFeO3–PbTiO3 ceramics
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- Thorsten Leist
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
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- Torsten Granzow
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
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- Wook Jo
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
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- Jürgen Rödel
- Technische Universität Darmstadt Institute of Materials Science, , 64287 Darmstadt, Germany
書誌事項
- 公開日
- 2010-07-01
- DOI
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- 10.1063/1.3445771
- 公開者
- AIP Publishing
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説明
<jats:p>The ferroelectric and piezoelectric properties of (1−x)BiFeO3–xPbTiO3 (BF-PT) ceramics were investigated as a function of tetragonal distortion. The latter was adjusted by employing La-doping (0–30 at %) while keeping the material near the morphotropic phase boundary by varying x between 0.35 and 0.46. This allows changing the c/a ratio of tetragonal BF-PT in the range from 1.10–1.01 and consequently alters the level of compatibility stresses. It was found that the c/a ratio has a significant influence on domain switching as inferred from electric field induced polarization, strain hysteresis, and Rayleigh measurements. Specifically, a threshold c/a ratio of about 1.045 was identified below which the electric field induced domain mobility increases sharply.</jats:p>
収録刊行物
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- Journal of Applied Physics
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Journal of Applied Physics 108 (1), 014103-, 2010-07-01
AIP Publishing