Title :
Abnormal electrical conduction phenomena in zinc oxide ceramics
Author :
Lee, Jae-Hyung ; Lee, Sang-Seok ; Kee-Joe Lim ; Bong-Heup Kim
Author_Institution :
Dept. of Electr. Eng., Chungbuk Nat. Univ., Seoul, South Korea
Abstract :
The transient response of zinc oxide ceramics with additives such as Bi2O3, Sb2O3, and MnO2 was investigated. A microstructural study suggests that all the ZnO grains are surrounded by an intergranular layer. The voltage-current characteristics measured at 20°C and 60°C are shown. Several of the characteristic phenomena observed, such as current oscillation and negative differential resistance, are discussed
Keywords :
antimony compounds; bismuth compounds; ceramics; current fluctuations; grain size; manganese compounds; negative resistance; semiconductor materials; sintering; transient response; zinc compounds; 20 degC; 60 degC; ZnOBi2O3; ZnOMnO2; ZnOSb2O3; ceramics; current oscillation; intergranular layer; microstructural study; negative differential resistance; semiconductor; sintering; transient response; voltage-current characteristics; Additives; Bismuth; Ceramics; Current-voltage characteristics; Grain boundaries; Pulse measurements; Surges; Temperature; Threshold voltage; Zinc oxide;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1989., Proceedings of the 3rd International Conference on
Conference_Location :
Trondheim
DOI :
10.1109/ICSD.1989.69211
