Journal of Materials Science

, Volume 34, Issue 6, pp 1385–1390 | Cite as

Ferroelectric and dielectric properties of sol-gel processed barium titanate ceramics and thin films

  • H. Basantakumar Sharma
  • H. N. K. Sarma
  • A. Mansingh


Ferroelectric and dielectric properties of barium titanate (BaTiO3) bulk ceramics and thin films have been investigated. The bulk ceramics and thin film samples have been prepared from barium acetate [Ba(CH3COO)2] and titanium(IV)isopropoxide [Ti(CH3)2CHO)4] precursors by sol-gel technique. The as-grown bulk powder and thin films were found to be amorphous, which crystallized to tetragonal phase after annealing at 700°C in air for one hour. The values of the spontaneous polarization (Ps), remanant polarization (Pr) and coercive field (Ec) of the bulk ceramics were found to be 19.0, 12.6 μC cm−2 and 30 kV cm−1 respectively. In the case of the film, the values of Ps, Pr and Ec were respectively found to be 14.0, 3.2 μC cm−2 and 53 kV cm−1. The capacitance-voltage (C-V) characteristics of the film also showed polarization hysteresis. The values of the dielectric constant (ε) of the bulk ceramic and thin film at 1 kHz were found to be 1235 and 370 respectively. Both the films and ceramics showed dielectric anomaly peaks at 125°C, showing ferroelectric to paraelectric phase transition.


Dielectric Property BaTiO3 Barium Titanate Spontaneous Polarization Isopropoxide 
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© Kluwer Academic Publishers 1999

Authors and Affiliations

  • H. Basantakumar Sharma
  • H. N. K. Sarma
  • A. Mansingh

There are no affiliations available

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