Electrostrictive effect in lead magnesium niobate single crystals

K. Uchino, S. Nomura, L. E. Cross, S. J. Jang, R. E. Newnham

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Transverse and longitudinal elastic strain have been measured for electric fields applied along the 〈100〉 direction in single crystals of lead magnesium niobate [Pb(Mg1/3Nb2/3)03], using a bonded strain gauge technique. A quadratic electrostrictive relation holds between induced elastic strain and electric polarization for temperatures near the low-frequency dielectric maximum. The electrostriction coefficients are almost temperature independent with values Q11=2.50×10 -2 m4/C2 and Q12=-0.96×10 -2 m4/C2. To check the direct measurements, the hydrostatic Q coefficient was determined independently by measuring the pressure dependence of the dielectric permittivity. The value Qh =0.60×10-2 m4/C2 obtained is in good agreement with that calculated from the direct measurements.

Original languageEnglish (US)
Pages (from-to)1142-1145
Number of pages4
JournalJournal of Applied Physics
Issue number2
StatePublished - 1980

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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