Electrical properties of Ta2O5-doped TiO2 varistor ceramics sintered at low-temperature

Influence of Annealing Atmosphere on Varistor Property of TiO<sub>2</sub>-Nb<sub>2</sub>O<sub>5</sub>-SrCO<sub>3</sub> Ceramics

“…So it has a good application prospect [3]- [11]. Since the varistor properties of TiO 2 ceramics were discovered at Bell Labs in 1982 [2], the researchers have been tried to improve its nonlinearity, namely α value, by studying the effects of donor single-doping, acceptor single-doping and the co-doping of donor and acceptor on its varistor properties [12] [13] [14] [15]. Recently, S. Ekaphan et al studied dielectric and nonlinear properties of Ca 1−1.5x Pr x Cu 3 Ti 4 O 12 /TiO 2 ceramics.…”

PREPARATION AND CHARACTERIZATION OF TiO₂-Ta₂O5-CaCO₃ VARISTOR CERAMICS BY HOT ISOSTATIC PRESSING (HIP) AND POST-ANNEALING

“…Since TiO2 ceramics was found to exhibit varistor characteristics in the Bell Labs in 1982 [4], researchers tried to improve its α value. Many works studied the effects of donor single doping, acceptor single doping and co-doping on the varistor properties [14][15][16][17].…”

Varistor, Dielectric, and Luminescent Properties of Pr6O11‐doped TiO2 Multifunctional Ceramics

“…The common dopant, Nb or Ta, is used as donor to decrease the lattice resistivity . In previous work, we studied the effect of Ta 2 O 5 on electrical properties of TiO 2 ‐based varistor ceramics and found that the optimal electrical properties of TiO 2 varistors were obtained for 0.50 mol% Ta 2 O 5 addition . Therefore, in the present work, we choose 0.50 mol% Ta 2 O 5 as donor dopant.…”

“…[5][6][7] In previous work, we studied the effect of Ta 2 O 5 on electrical properties of TiO 2 -based varistor ceramics and found that the optimal electrical properties of TiO 2 varistors were obtained for 0.50 mol% Ta 2 O 5 addition. 8 Therefore, in the present work, we choose 0.50 mol% Ta 2 O 5 as donor dopant. Rare-earth doping has been extensively studied to improve the electrical properties of varistor ceramics.…”