Bulletin of Materials Science

, Volume 9, Issue 4, pp 255–262

Dielectric behaviour of glasses and glass ceramics in the system BaO-PbO-TiO2-B2O3-SiO2

  • R K Mandal
  • Ch. Durga Prasad
  • O M Parkash
  • Devendra Kumar
Article

Abstract

Glasses with varying molar ratios of PbO/BaO in the system BaO-PbO-TiO2-B2O3-SiO2 were prepared keeping (BaO + PbO)/TiO2 ratio equal to one. The glasses were ceramized by two-stage heat treatment. X-ray diffraction indicates that PbTiO3 crystallizes in lead-rich glasses while BaTiO3 precipitates in barium-rich compositions. Solid solution (Ba, Pb)TiO3 does not seem to crystallize over the entire range of compositions. Simultaneous presence of PbO and BaO in the initial glass composition reduces the yield of ferroelectric phase. Dielectric properties have been interpreted in terms of microstructural features.

Keywords

Glass ceramics ferroelectric dielectric constant 

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Copyright information

© Indian Academy of Sciences 1987

Authors and Affiliations

  • R K Mandal
    • 1
  • Ch. Durga Prasad
    • 1
  • O M Parkash
    • 1
  • Devendra Kumar
    • 1
    • 2
  1. 1.School of Materials Science and TechnologyBanaras Hindu UniversityVaranasiIndia
  2. 2.Department of Ceramic Engineering, Institute of TechnologyBanaras Hindu UniversityVaranasiIndia

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