Foeller, P.Y., Dean, J.S., Sinclair, D.C. et al. (1 more author) (2016) Design of a bilayer ceramic capacitor with low temperature coefficient of capacitance. Applied Physics Letters, 109 (8). 082904 . ISSN 0003-6951
Abstract
We show how a simple bilayer system that combines a layer of undoped BaTiO3 (BT) with a second layer of Ba0.975Na0.025Ti0.975Nb0.025O3 (2.5NNBT) can be used to improve the temperature coefficient of capacitance (TCC) of BaTiO3-based materials for capacitor applications. The bilayer system emulates the volume ratio between a conventional core and shell phase microstructure allowing a simple resource efficient approach to optimise the system for low TCC. Optimisation was achieved with a volume ratio of 0.67 2.5NNBT with 0.33 BT and results in a TCC of ±6% over the temperature range ∼25 to 125 °C whilst maintaining a permittivity of εr ∼ 3000 and low dielectric loss.
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Copyright, Publisher and Additional Information: | © 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/) | ||||
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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) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 15 Aug 2016 15:18 | ||||
Last Modified: | 17 Jan 2020 13:15 | ||||
Published Version: | https://dx.doi.org/10.1063/1.4961616 | ||||
Status: | Published | ||||
Publisher: | American Institute of Physics | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1063/1.4961616 |