Temperature dependence of electrostriction in rhombohedral Pb(Zn 1/3Nb 2/3)O 3-PbTiO 3 single crystals

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

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49 Scopus citations

Abstract

The temperature dependent electrostrictive behavior of rhombohedral Pb(Zn 1/3Nb 2/3)O 3-xPbTiO 3 crystals (PZN-PT, x<0.09) was investigated. Although the application of an E field induces a macroscopic ferroelectric phase at room temperature, rhombohedral crystals still exhibit relaxor characteristics, such as polarization modulation. The polarization is believed to become homogeneous in association with the E-field induced phase transition into the tetragonal phase. Electrostrictive coefficients, Q 11∼9.5×10 -2m 4/C 2 and Q 12∼-3.6m 4/C 2 were calculated at the high fields. Strain values calculated based upon these coefficients were found to be significantly greater than that measured at low fields, being attributed to polarization modulation. With decreasing temperature, the theoretical strain values came closer to measured strain values. Theoretical and calculated values are expected to be equal at temperatures lower than 150 K, where the polarization in the E-field exposed crystal is homogeneous and collinear.

Original languageEnglish (US)
Pages (from-to)461-467
Number of pages7
JournalJournal of Applied Physics
Volume92
Issue number1
DOIs
StatePublished - Jul 1 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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