Intrinsic and coupling-induced elastic nonlinearity of lanthanum-doped lead magnesium niobate-lead titanate electrostrictive ceramic

Wenhua Jiang, Wenwu Cao

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The elastic nonlinearity of lanthanum-doped lead magnesium niobate-lead titanate electrostrictive ceramic has been investigated by using ultrasonic second-harmonic generation technique and field-induced strain measurement. A large ultrasonic nonlinearity parameter, β=30, was observed at room temperature, which is more than twice of the values for lead zirconate-lead titanate piezoelectric ceramics. The third-order elastic constant c111 has been calculated from the β value. By introducing an effective nonlinearity parameter βe that includes both the intrinsic and the electromechanical coupling generated elastic nonlinearities, the nonlinearity parameter can be accurately characterized. The strong field dependence of the nonlinearity parameter shows excellent potential for designing field tunable nonlinear devices using this material.

Original languageEnglish (US)
Pages (from-to)1387-1389
Number of pages3
JournalApplied Physics Letters
Volume77
Issue number9
DOIs
StatePublished - Aug 28 2000

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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