Doping effects on the piezoelectric properties of loẇ-temperature sintered PbTiO3-based ceramics for SAW applications

Te Yi Chen, Sheng Yuan Chu, Chih Kao Cheng

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6 Citations (Scopus)

Abstract

The Sm-modified lead titanate ceramics with a composition of (Pb 0.85Sm0.1) (Ti0.98Mn0.02)O 3 piezoceramics, doped and undoped with BiFeO3 (BF) and Ba(Cu0.5W0.5)O3 (BCW) oxides, were prepared by conventional mixed-oxide method, using sintering temperature at 1075°C and 1100°C. Microstructural and compositional analyses of the PbTiO 3-based ceramics have been carried out using XRD and SEM. The effects of dopants on the sintering temperature and piezoelectric properties of the ceramics have been investigated. We successfully showed that these additives were helpful in lowering of the sintering temperature and still keep high thickness electromechanical coupling coefficient, kt, and small planar electromechanical coupling coefficient, kp. Surface acoustic wave (SAW) filters were fabricated and the phase velocities were measured.

Original languageEnglish
Pages (from-to)1315-1324
Number of pages10
JournalIntegrated Ferroelectrics
Volume58
DOIs
Publication statusPublished - 2003 Dec 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Ceramics and Composites
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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