Pressure and electric field effects on piezoelectric responses of KNbO 3

Linyun Liang, Y. L. Li, Fei Xue, Long-qing Chen

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The dielectric and piezoelectric properties of a KNbO 3 single crystal under applied hydrostatic pressure and positive bias electric field are investigated using phenomenological Landau-Ginzburg-Devonshire thermodynamic theory. It is shown that the hydrostatic pressure effect on the dielectric and piezoelectric properties is similar to temperature, suggesting a common underlying mechanism for the piezoelectric anisotropy and its enhancement. The stable phase diagram of KNbO 3 as a function of temperature and positive bias electric field is constructed. The maximum piezoelectric coefficient d 33 o varying with temperature and electric field is calculated.

Original languageEnglish (US)
Article number064106
JournalJournal of Applied Physics
Volume112
Issue number6
DOIs
StatePublished - Sep 15 2012

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pressure distribution
hydrostatic pressure
electric fields
dielectric properties
pressure effects
temperature distribution
phase diagrams
thermodynamics
anisotropy
temperature
augmentation
single crystals
coefficients

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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Pressure and electric field effects on piezoelectric responses of KNbO 3 . / Liang, Linyun; Li, Y. L.; Xue, Fei; Chen, Long-qing.

In: Journal of Applied Physics, Vol. 112, No. 6, 064106, 15.09.2012.

Research output: Contribution to journalArticle

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AB - The dielectric and piezoelectric properties of a KNbO 3 single crystal under applied hydrostatic pressure and positive bias electric field are investigated using phenomenological Landau-Ginzburg-Devonshire thermodynamic theory. It is shown that the hydrostatic pressure effect on the dielectric and piezoelectric properties is similar to temperature, suggesting a common underlying mechanism for the piezoelectric anisotropy and its enhancement. The stable phase diagram of KNbO 3 as a function of temperature and positive bias electric field is constructed. The maximum piezoelectric coefficient d 33 o varying with temperature and electric field is calculated.

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