Doping effects of SiO2 on the dielectric and piezoelectric properties of PbTiO3-based ceramics and Its SAW applications

Te Yi Chen, Sheng Yuan Chu, Chih Kao Cheng

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1 Citation (Scopus)

Abstract

The Sm-modified lead titanate ceramics with a composition of (Pb 0.85Sm0.1)-(Ti0.98Mn0.02)O 3 piezoceramics doped with SiO2 were prepared by conventional mixed-oxide method using sintering temperature at 1100°C. Microstructural and compositional analyses of the PbTiO3-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) devices were fabricated and the properties, including phase velocity and temperature coefficient of frequency (TCF), were measured.

Original languageEnglish
Pages (from-to)65-72
Number of pages8
JournalIntegrated Ferroelectrics
Volume69
DOIs
Publication statusPublished - 2005
Event16th International Symposium on Integrated Ferroelectrics, ISIF-16 - Gyeongju, Korea, Republic of
Duration: 2004 Apr 52004 Apr 8

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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