Electric field dependence of piezoelectric properties for rhombohedral 0.955Pb(Zn1/3Nb2/3)O3- 0.045PbTiO3 single crystals

Shi Fang Liu, Seung Eek Park, Thomas R. Shrout, L. Eric Cross

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Abstract

The electric field dependence of the piezoelectric properties of rhombohedral 0.955Pb(Zn1/3Nb2/3)O3-0.045PbTiO3 crystals were investigated as a function of orientation with respect to the prototypic (cubic) axes. For 〈111〉 oriented fields, depolarization and subsequent domain reorientation resulted in an apparent maximum in the piezoelectric coefficients occurring at ∼5 kV/cm, followed by nonhysteretic dij saturation, indicating a single domain state under bias. By extrapolation, single domain values for the piezoelectric coefficients d33 and d31 were determined to be 125 and -35 pC/N, respectively. The hydrostatic piezoelectric coefficient dh for single domain crystals was calculated to be ∼55 pC/N, coincident with the experimentally determined values under hydrostatic pressure. For 〈001〉 oriented fields, piezoelectric coefficients d33〈001〉 and d31〈001〉 as high as 2250 and -1000 pC/N were determined, respectively. Although a high value of dh〈001〉 (∼250 pC/N) was expected, the experimentally determined value was only ∼50 pC/N. A change of polar vector within the crystal lattice was discussed in relation to the volume strain associated with an E-field induced phase transition and the possible origin of the discrepancy in hydrostatic dh values.

Original languageEnglish (US)
Pages (from-to)2810-2814
Number of pages5
JournalJournal of Applied Physics
Volume85
Issue number5
DOIs
Publication statusPublished - Jan 1 1999

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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