Journal
JOURNAL OF MATERIALS SCIENCE
Volume 48, Issue 9, Pages 3586-3596Publisher
SPRINGER
DOI: 10.1007/s10853-013-7156-5
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Funding
- Karlsruhe Nano Micro Facility (KNMF), a Helmholtz Research Infrastructure at KIT
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The effects of fluorine co-doping by means of a post-thermal annealing process of iron-doped BST thin films in a fluorine-containing atmosphere have been investigated. XPS and ToF-SIMS sputter depth profiling verified a homogeneous fluorine distribution in the thin films. By employing EPR, it was shown that singly charged (Fe-Ti'-V-<(O)double over dot>)(-) defect complexes, as well as 'isolated' Fe-Ti' centres with a distribution of F-(O) triple over dot sites in remote coordination spheres exist in the fluorinated films. Tunability enhancement due to fluorine co-doping as well as a Q-factor enhancement due to iron doping is demonstrated.
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