Role of secondary phase in high power piezoelectric PMN-PZT ceramics

Yongke Yan, Kyung Hoon Cho, Shashank Priya

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

This study reports the dielectric and piezoelectric properties of 0.4Pb(Mg1/3Nb2/3)O3-0.25PbZrO 3-0.35PbTiO3 (PMN-PZT), 2 mol% MnO2-doped 0.4Pb(Mg1/3Nb2/3)O3-0.25PbZrO 3-0.35PbTiO3 (MnO2+PMN-PZT), and 0.06Pb(Mn 1/3Nb2/3)O3-0.34Pb(Mg1/3Nb 2/3)O3-0.25PbZrO3-0.35PbTiO3 (PMnN+PMN-PZT) ceramics. The results show that MnO2 modification results in the formation of MgO secondary phase which promotes grain growth and reduces the electromechanical properties. We conclusively demonstrate that Mn2+ acts as pervoskite stabilizer in Pb-based (1:2) relaxors and leads to the formation of divalent oxide secondary phase. Modification with PMnN avoids the formation of MgO and provides combinatory doping effect with smaller grain sizes.

Original languageEnglish (US)
Pages (from-to)4138-4141
Number of pages4
JournalJournal of the American Ceramic Society
Volume94
Issue number12
DOIs
StatePublished - Dec 1 2011

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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