@article{YANG2024, 
author = {Liyu YANG and Xin REN and Yu NING and Xiaoman LIU and Li GAO and Junwei YOU and Zheng YAO},
title = {Improvement in Impact Stability of ZnO Varistors through Donor Doping},
year = {2024},
journal = {Journal of Ceramics},
volume = {45},
number = {2},
pages = {352-359},
keywords = {ZnO varistors, donor doping, electrical properties, surge impact stability},
url = {https://www.sciopen.com/article/10.13957/j.cnki.tcxb.2024.02.014},
doi = {10.13957/j.cnki.tcxb.2024.02.014},
abstract = {The effects of aluminum indium codoping on the microstructure and electrical properties of ZnO varistors, especially the surge impact stability, were studied. The microstructure was characterized by using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrical properties were evaluated by using current-voltage test, pulsed current impulse test and capacitance-voltage test. The sample doped with 0.0008 mol% Al3+ and 0.0033 mol% In3+ exhibited excellent electrical properties, with breakdown voltage gradient of 95.3 V·mm−1, nonlinear coefficient of 74 and residual voltage ratio of 2.43. In addition, after 20 shocks at 8/20 μs 10 kA current, the positive and negative voltage change rates were +3.30% and −6.67%, respectively.}
}