Maxwell-wagner relaxation and degradation of SrTiO3 and BaTiO3 ceramics
- 1 July 1986
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 69 (1) , 179-186
- https://doi.org/10.1080/00150198608008191
Abstract
Ceramics of undoped SrTiO3 and BaTiO3 (at T > Tc) show a pronounced Maxwell-Wagner relaxation at ultra low frequencies. This indicates thin nonconducting barrier layers at the grain boundaries and some residual conductivity in the grain. Degradation of the ceramic starts when the electrical field, which develops at the grain boundaries, exceeds breakdown strength.Keywords
This publication has 2 references indexed in Scilit:
- The effects of composition and microstructure on electrical degradation in BaTiO3Ferroelectrics, 1983
- A model of dc leakage in ceramic capacitorsJournal of Applied Physics, 1982