The piezoelectric and dielectric properties of Cd additive Sm-modified PbTiO3 ceramics

Te Yi Chen, Sheng-Yuan Chu, Shih Jeh Wu, Yung Der Juang

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3 Citations (Scopus)


Effects of cadmium dopants on the piezoelectric and dielectric properties of Sm-modified PbTiO3 ceramics have been investigated. Sm-modified lead PbTiO3 ceramics with a composition of (Pb0.85-xCdxSm0.1)(Ti0.98Mn0.02 ) O3, x = 0.01-0.08 were prepared by conventional mixed-oxide methods with sintering temperature at 1150°C. We successfully showed that Cd additive is helpful to grow the grain size and obtain much higher thickness electromechanical coupling coefficient, kt (>0.55), than that of conventional PbTiO3-based ceramics and still keep small planar electromechanical coupling coefficient, kp. All of these doped ceramics have a positive temperature coefficient of frequency (TCF) smaller than 10 ppm/°C. Microstructural and compositional analyses of these doped ceramics have been carried out using X-ray diffraction (XRD) and scanning electron microscopy (SEM).

Original languageEnglish
Pages (from-to)352-357
Number of pages6
JournalSensors and Actuators, A: Physical
Issue number3
Publication statusPublished - 2002 Oct 30

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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