Determination of oxygen vacancy limit in Mn substituted YSZ ceramics

Joanna Stępień; Marcin Sikora; Czesław Kapusta; Daria Pomykalska; Mirosław M. Bućko

doi:10.1063/1.5019984

Determination of oxygen vacancy limit in Mn substituted YSZ ceramics

Materials Science 2018-05-23 v1

Authors: Joanna Stępień , Marcin Sikora , Czesław Kapusta , Daria Pomykalska , Mirosław M. Bućko

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Abstract

The series of Mnx(Y0.148Zr0.852)1-xO2-{\delta} ceramics was systematically studied by means of X-ray absorption and emission spectroscopy and DC magnetic susceptibility. XAS and XES results show changes in manganese oxidation state and a gradual evolution of the local atomic environment around Mn ions upon increasing dopants content, which is due to structural relaxation caused by growing amount of oxygen vacancies. Magnetic susceptibility measurements reveal that Mn3O4 precipitates are formed for x greater than or equal to 0.1 and enable independent determination of actual quantity of Mn ions dissolved in YSZ solid solution. We show that amount of oxygen vacancies generated by manganese doping into YSZ is limited to 0.19 per formula unit.

Keywords

YSZ ceramics Mn substitution oxygen vacancy limit X-ray absorption spectroscopy X-ray emission spectroscopy magnetic susceptibility structural relaxation

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@article{arxiv.1702.08361,
  title  = {Determination of oxygen vacancy limit in Mn substituted YSZ ceramics},
  author = {Joanna Stępień and Marcin Sikora and Czesław Kapusta and Daria Pomykalska and Mirosław M. Bućko},
  journal= {arXiv preprint arXiv:1702.08361},
  year   = {2018}
}

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10 pages, 5 figures

Determination of oxygen vacancy limit in Mn substituted YSZ ceramics

Abstract

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