Orientation dependence properties of modified tetragonal 0.88Pb(Zn 1/3Nb 2/3)O 3-0.12PbTiO 3 single crystals

Shujun Zhang, Laurent Lebrun, Clive A. Randall, Thomas R. Shrout

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Tetragonal 0.88Pb(Zn 1/3Nb 2/3)O 3-0. 12PbTiO 3 (PZNT12) single crystals were found to possess high electromechanical coupling k 33 ∼ 86-88% and large coercive field ∼8 kV/cm, while exhibiting good temperature stability till its Curie temperature (T c) ∼190°C. The role of dopants on the dielectric and piezoelectric properties of PZNT12 crystals modified with the Fe, Co, Ce and Mn, all resulted in a downward shift of T c, effectively increasing the dielectric permittivity, while the mechanical quality factor Q was found to be greatly improved. The detailed characterization of doped Mn-PZNT12 crystals was performed along different crystallographic orientations, in which the figure of merit d · Q was found to be the highest when the sample was poled along the [110] direction, along with a very low strain-electric field hysteresis, making the manganese modified PZNT12 crystals promising candidates for high power resonance transducers.

Original languageEnglish (US)
Pages (from-to)151-157
Number of pages7
JournalPhysica Status Solidi (A) Applications and Materials Science
Issue number1
StatePublished - Jan 1 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

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