| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9761583 | Solid State Ionics | 2005 | 6 Pages |
Abstract
Impedance spectroscopy with spatial resolution using a microcontact array has successfully been applied to nitrogen-graded zirconia to establish the conductivity variation with nitrogen dopant concentration. Impedance profiles were measured in two configurations: 1) using one microelectrode versus a large counter electrode and 2) measuring between two microelectrodes. A versatile equivalent circuit model was introduced which allows a straightforward analysis of the obtained spectra which exhibit inductive loops as frequently associated with two-microcontact measurements. The analysis unambiguously revealed a local conductivity anisotropy in the material.
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Electrochemistry
Authors
Jong-Sook Lee, Jürgen Fleig, Joachim Maier, Tai-Joo Chung, Doh-Yeon Kim,