West, A.R. orcid.org/0000-0002-5492-2102, Hernández, M.A. and Masó, N. (2016) On the correct choice of equivalent circuit for fitting bulk impedance data of ionic/electronic conductors. Applied Physics Letters, 108 (15). 152901. ISSN 0003-6951
Abstract
Bulk conductivity data of ionically and electronically conducting solid electrolytes and electronic ceramics invariably show a frequency dependence that cannot be modelled by a single-valued resistor. To model this, common practice is to add a constant phase element (CPE) in parallel with the bulk resistance. To fit experimental data on a wide variety of materials, however, it is also essential to include the limiting, high frequency permittivity of the material in the equivalent circuit. Failure to do so can lead to incorrect values for the sample resistance and CPE parameters and to an inappropriate circuit for materials that are electrically heterogeneous.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 American Institute of Physics. This is an author produced version of a paper subsequently published in Applied Physics Letters. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 13 May 2016 10:02 |
Last Modified: | 15 May 2016 01:57 |
Published Version: | https://dx.doi.org/10.1063/1.4946008 |
Status: | Published |
Publisher: | American Institute of Physics |
Refereed: | Yes |
Identification Number: | 10.1063/1.4946008 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99068 |