The giant piezoelectric effect: electric field induced monoclinic phase or piezoelectric distortion of the rhombohedral parent?

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dc.contributor.authorKisi, EHen_AU
dc.contributor.authorPiltz, ROen_AU
dc.contributor.authorForrester, JSen_AU
dc.contributor.authorHoward, CJen_AU
dc.date.accessioned2025-11-14T03:43:49Zen_AU
dc.date.available2025-11-14T03:43:49Zen_AU
dc.date.issued2003-05-19en_AU
dc.date.statistics2025-11-12en_AU
dc.description.abstractLead zinc niobate-lead titanate (PZN-PT) single crystals show very large piezoelectric strains for electric fields applied along the unit cell edges e.g. [001]R. It has been widely reported that this effect is caused by an electric field induced phase transition from rhombohedral (R3m) to monoclinic (Cm or Pm) symmetry in an essentially continuous manner. Group theoretical analysis using the computer program ISOTROPY indicates phase transitions between R3m and Cm (or Pm) must be discontinuous under Landau theory. An analysis of the symmetry of a strained unit cell in R3m and a simple expansion of the piezoelectric strain equation indicate that the piezoelectric distortion due to an electric field along a cell edge in rhombohedral perovskite-based ferroelectrics is intrinsically monoclinic (Cm), even for infinitesimal electric fields. PZN-PT crystals have up to nine times the elastic compliance of other piezoelectric perovskites and it might be expected that the piezoelectric strains are also very large. A field induced phase transition is therefore indistinguishable from the piezoelectric distortion and is neither sufficient nor necessary to understand the large piezoelectric response of PZN-PT. © IOP Publishingen_AU
dc.identifier.articlenumber3631en_AU
dc.identifier.citationKisi, E. H., Piltz, R. O., Forrester, J. S., & Howard, C. J. (2003). The giant piezoelectric effect: electric field induced monoclinic phase or piezoelectric distortion of the rhombohedral parent? Journal of Physics: Condensed Matter, 15(21), 3631. doi:10.1088/0953-8984/15/21/311en_AU
dc.identifier.issn0953-8984en_AU
dc.identifier.issn1361-648Xen_AU
dc.identifier.issue21en_AU
dc.identifier.journaltitleJournal of Physics Condensed Matteren_AU
dc.identifier.urihttps://doi.org/10.1088/0953-8984/15/21/311en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16712en_AU
dc.identifier.volume15en_AU
dc.language.isoenen_AU
dc.publisherIOP Publishingen_AU
dc.subjectElectric fieldsen_AU
dc.subjectPiezoelectricityen_AU
dc.subjectZincen_AU
dc.subjectCrystalsen_AU
dc.subjectNiobatesen_AU
dc.subjectLeaden_AU
dc.subjectStrainsen_AU
dc.subjectPerovskiteen_AU
dc.subjectPhase transformationsen_AU
dc.titleThe giant piezoelectric effect: electric field induced monoclinic phase or piezoelectric distortion of the rhombohedral parent?en_AU
dc.typeJournal Articleen_AU
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