The electrode effect in reduced semiconducting Nb-doped SrTiO3 ceramics |
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| Authors: | S. K. Sundaram |
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| Affiliation: | (1) School of Materials Science and Engineering, Georgia Institute of Technology, GA 30332-0245 Atlanta, USA;(2) Present address: Battella Pacific Northwest Laboratory, MS P7-41 Richmond, P.O. Box 999 WA 99352, USA |
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| Abstract: | Complex-plane impedance analysis was used to study the electrode effect in reduced semiconducting SrTiO3 ceramics. The electrodes investigated were In, In-Ga, Ag and Ni. A real-axis intercept and a semicircular arc were observed for the In, In-Ga and Ag electrodes. But only a real-axis intercept was observed for the Ni electrode. Based on the observations, the electrode effect was modelled, and an equivalent circuit was proposed. |
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