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The potential existence of mixed defect incorporation modes for rare-earth doped cubic BaTiO3

Lookup NU author(s): Dr James DawsonORCiD


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© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.The existence of two novel rare-earth incorporation mechanisms in cubic barium titanate is demonstrated using classical simulations. The dependence of solution, binding and modified solution energies with respect to the ionic radii of dopants is determined. Strong defect binding energies are obtained, similar to Er-doping, which has been reported previously. Dopants with small ionic size can potentially be incorporated via either the Ba-vac or Ti-vac mode, whereas large dopants prefer the Ti-vac mixed mode. Although the mixed modes reveal somewhat higher energies with respect to the traditional self-compensation mechanism, they are likely to be active under certain experimental conditions. The abstract figure shows two mixed incorporation mechanisms in doped BaTiO3 labelled as (a) Ti-vac and (b) Ba-vac. Green, grey, blue, and red spheres correspond to Ba2+, Ti4+, rare-earth (RE3+), and O2- ions, respectively.

Publication metadata

Author(s): Zulueta YA, Dawson JA, Leyet Y, Guerrero F, Anglada-Rivera J, Nguyen MT

Publication type: Article

Publication status: Published

Journal: Physica Status Solidi (B) Basic Research

Year: 2016

Volume: 253

Issue: 4

Pages: 733-737

Print publication date: 07/04/2016

Online publication date: 09/12/2015

Acceptance date: 11/11/2015

ISSN (print): 0370-1972

ISSN (electronic): 1521-3951

Publisher: Wiley-VCH Verlag


DOI: 10.1002/pssb.201552329


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