Abstract
The effects of CuO on the SnO 2·Co 2O 3·Ta 2O 5 varistor system sintered at 1250 °C for 80 min were investigated. It was found that CuO significantly affects the grain size and electrical properties of the SnO 2-based varistors. The grain size rises from 4.7 to 11.4 μm, the breakdown electrical field decreases from 485 to 265 V mm −1 and relative dielectric constant (at 1 kHz) increases from 970 to 2451 with an increase in CuO concentration from 0.00 to 1.00 mol%. The sample with 0.25 mol% CuO has the best nonlinear electrical property and the highest nonlinear coefficient ( α = 15.7) among all samples. The reason why grain size increases with increasing CuO concentration is explained. Also, the interpretation of the increase in nonlinearity is given.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callSimilar Papers
More From: Materials Science & Engineering B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
