A link between p-type electrical conduction and microwave dielectric loss in highly ordered Ba(Co1/3Nb2/3)O3 ceramics

LI, Ming, FETEIRA, Antonio, MIRSANEH, Mehdi, LANAGAN, Michael T. and SINCLAIR, Derek C. (2010). A link between p-type electrical conduction and microwave dielectric loss in highly ordered Ba(Co1/3Nb2/3)O3 ceramics. Journal of Materials Research, 25 (06), 1011-1014.

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Official URL: http://dx.doi.org/10.1557/JMR.2010.0132
Link to published version:: https://doi.org/10.1557/JMR.2010.0132
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    Abstract

    BaCo1/3Nb2/3O3 ceramics, with a high density and a similar, high degree of 1:2 B-site cation ordering, exhibit very different quality factors, Q. The ceramics exhibit p-type behavior with higher conductivity and lower Q for samples processed in O2 as compared with those processed in air. It is proposed that unavoidable Co loss during high-temperature ceramic processing leads to p-type doping that must be compensated by oxygen vacancies to impede hole formation. The composition exhibiting only intrinsic conduction and optimized Q is not achieved with processing in atmospheric oxygen due to filling of oxygen vacancies and hole formation during cooling.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Corrosion Technology
    Identification Number: https://doi.org/10.1557/JMR.2010.0132
    Page Range: 1011-1014
    Depositing User: Hilary Ridgway
    Date Deposited: 06 Jun 2012 10:36
    Last Modified: 10 Oct 2018 13:10
    URI: http://shura.shu.ac.uk/id/eprint/5318

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