Electrostrictive and Dielectric Response in Lead Magnesium Niobate–Lead Titanate (0.9PMN · 0.1PT) and Lead Lanthanum Zirconate Titanate (PLZT 9.5/65/35) under Variation of Temperature and Electric Field

Qiming Zhang, Wuyi Pan, Amar Bhalla, Leslie E. Cross

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

In situ measurements of electrostrictive strain and effective dielectric constant for two ferroelectric relaxor materials, lead magnesium niobate–lead titanate (0.9PMN · 0.1PT) and lead lanthanum zirconate titanate (PLZT 9.5/65/35), were performed in the temperature ranges near their respective mean Curie points under the variation of applied electric field. The measurement results show that the polarization‐related electrostrictive coefficients Qij are not constant under variation of temperature and electric field. The observed anomaly in Qij indicates the dynamic behavior of the existing micropolar domains and its coupling to local defect structure. The data also support the idea that at temperatures far above the mean Curie point, there is still a substantial amount of micropolar domain and the response of the relaxor materials at the experimental temperature range is from the combined contributions due to induced polarization and micropolar domain flipping.

Original languageEnglish (US)
Pages (from-to)599-604
Number of pages6
JournalJournal of the American Ceramic Society
Volume72
Issue number4
DOIs
StatePublished - Apr 1989

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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