A Study on the Dielectric and Piezoelectric properties of the Pb(SbS11/2TSnS11/2T)OS13T-PbTiOS13T-PbZrOS13T Ceramics

Pb(Sb1/2Sn1/2)O3-PbTiO3-PbZrO3 세라믹스의 유전 및 압전 특성에 관한 연구

  • 정장호 (광운대 대학원 전자재료공학과) ;
  • 류기원 (광운대 대학원 전자재료공학과) ;
  • 이성갑 (광운대 공대 전자재료공학과) ;
  • 이영희 (광운대 공대 전자재료공학과)
  • Published : 1992.05.01

Abstract

In this study, 0.10Pb(SbS11/2TSnS11/2T)OS13T-(0.90-x)PbZrOS13T (0.25 x 0.40) ceramics were fabricated by the atmospheric method. The sintering temperature and time were 1250[$^{\circ}C$] and 2[2hr], respectively. The structureal, dielectric and piezoelectric properties with composition of PbTiOS13T were studied. As the results of XRD ans SEM, the crystal structure of a specimen was rhombohedral, lattice constant and average grain size were decreased with increasing the contents of PbTiOS13T. Relative dielectric constant and Curie temperature were increased with increasing the contents of PbTiOS13T, 0.10PSS-0.40PT-0.50PZ specimen had the highest values of 904 and 265[$^{\circ}C$], respectively. In increasing of PbTiOS13T contents form 25[mol%] to 40[mol%], piezoelectric charge constant and electromechanical coupling factors were increased form 114[pC/N] to 142[pC/N], 17[%] to 24[%] and mechanical quality factor were decreased with increasing the contents of PbTiOS13T. In the 0.10PSS-0.40PT-0.50PZ specimens, those values were 14.2[kV/cm] and 9.43[x10S0-6TC/cmS02T], resectively.

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