Changes in the Electrical Conduction Mechanism with the Electrical Degradation of BaTiO3-Based Ceramics
The electrical degradation mechanisms of BaTiO3-based ceramics were investigated by measuring the dependence of leakage current on high electric fields. Before the degradation, the leakage current predominately obeyed Ohm’s law and Poole-Frenkel relation. As the degradation progressed, the Poole-Frenkel emission current increased. Moreover, the total current at the high electric fields also comprised Schottky emissions between cathodes and dielectric layers.
Kazumi Kato, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki
M. Nakano et al., "Changes in the Electrical Conduction Mechanism with the Electrical Degradation of BaTiO3-Based Ceramics", Key Engineering Materials, Vol. 388, pp. 201-204, 2009