Dielectric, piezoelectric, and ferroelectric properties of Al 2O3 and MnO2 modified PbSnO3- PbTiO3-Pb(Mg1/3Nb2/3)O3 ternary ceramics

Dawei Wang, Quanliang Zhao, Maosheng Cao, Yan Cui, Shujun Zhang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The PbSnO3-PbTiO3-Pb(Mg1/3Nb 2/3)O3 (PST-PMN) ternary system with morphotropic phase-boundary (MPB) compositions were fabricated using a two-step columbite precursor method. The effects of Al2O3 and MnO2 addition on the dielectric, piezoelectric, and ferroelectric properties of PST-PMN were investigated. MnO2 acted as an acceptor dopant and induced a "hardening" effect in PST-PMN, with decreased piezoelectric coefficients d33 and increased mechanical quality factors Q m, while the addition of Al2O3 led to the significant decrease of piezoelectric properties, attributed to the second phase. Of particular interest is the fact that the Mn-doped PST-PMN exhibited excellent properties when the doping level was in the range of 0.2-0.5 wt%, with piezoelectric d33, planar electromechanical coupling kp, dielectric permittivity Ïμr, Qm, remnant polarization Pr and coercive field EC being on the order of ∼510 pC N-1, ∼57%, 3120-3500, 530-600, 27-30 μC cm -2, and ∼8 kV cm-1, respectively, showing advantages over commercial PZT4-type ceramics, which are promising for high-power electromechanical applications.

Original languageEnglish (US)
Pages (from-to)1363-1368
Number of pages6
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume210
Issue number7
DOIs
StatePublished - Jul 1 2013

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

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