Negative Resistance Behavior of Ferroelectric Bismuth Titanate Ceramics at Low Field
Ferroelectric Bi4Ti3O12 ceramics are fabricated by conventional solid-state reaction process. The current-voltage characteristic of Bi4Ti3O12 sample exhibits a voltage-controlled negative differential resistance behavior at low field (E≤100V/mm), and an obvious PTC effect appears at around 100°C on the resistance-temperature curve. Based on conducting filament model about electrical transport, instead of Heywang-Jonker model, the experimental results of Bi4Ti3O12 ceramics are suitably explained.
Yiwang Bao, Danyu Jiang, Li Tian and Jianghong Gong
X.A. Mei et al., "Negative Resistance Behavior of Ferroelectric Bismuth Titanate Ceramics at Low Field", Key Engineering Materials, Vol. 492, pp. 234-237, 2012