Crystal growth and electrical properties of Pb(Yb1/2Nb1/2)O3-PbTiO3 perovskite single crystals

Shujun Zhang, Paul W. Rehrig, Clive Randall, Thomas R. Shrout

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Abstract

Pb(Yb1/2Nb1/2)O3-PbTiO3 (PYNT) single crystals were firstly grown using the high temperature solution method. Based on X-ray powder diffraction and thermal behavior of polycrystalline material, issues of perovskite instability were revealed. Barium additions were used to aid in the stabilization of the perovskite rhombohedral phase. The Curie temperature of PYNT (60/40) was found to vary from 244°C to 268°C, the characteristic of relaxor ferroelectric with the temperature of dielectric maximum increasing with increasing frequencies. Electrical properties of PYNT (60/40) investigated along 〈0 0 1〉, 〈0 1 1〉, and 〈1 1 1〉 pseudo-cubic directions, revealed remnant polarizations (Pr) of 26.5, 27.6 and 41.6 μC/cm2, respectively, while the coercive fields (Ec) were 10.1, 9.4, and 11.5 kV/cm. The piezoelectric coefficient (d33) of 〈0 0 1〉 oriented samples was found to be ∼1200 pC/N, with a strain reaching 0.54% at 100 kV/cm. The large piezoelectric coefficient, coercive field, and high Tc (>250°C) make PYNT single crystals promising candidates for high temperature and high performance solid-state actuators and transducers.

Original languageEnglish (US)
Pages (from-to)415-420
Number of pages6
JournalJournal of Crystal Growth
Volume234
Issue number2-3
DOIs
StatePublished - Jan 2002

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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