Formation of contact and multiple cyclic cassiterite twins in SnO2-based ceramics co-doped with cobalt and niobium oxides

Daneu, N.; Dražič, G.; Mazaj, M.; Barou, F.; Padrón-Navarta, J.A.

doi:10.1107/S2052520622006758

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 8
(a) Scheme of an alternating twin where all cassiterite domains are oriented along their [111]_Cst zone axis and the Co₄Nb₂O₉ seed is oriented along the pseudo fourfold $[[2{\bar 2}1]_{{\rm Crn}\hbox{-}{\rm t}}]$ zone axis. (b) Stereograms of the Co₄Nb₂O₉ seed and SnO₂ domain B show that besides the edge-on $[({\bar 1}02)_{{\rm Crn}\hbox{-}{\rm t}}]$ and $[(0{\bar 1}{\bar 1})_{\rm Cst}]$ planes, another pair of planes $[({\bar 1}20)_{{\rm Crn}\hbox{-}{\rm t}}]$ and $[(0{\bar 1}{\bar 1})_{\rm Cst}]$ lies oblique to the viewing direction (marked by yellow). This pair of planes corresponds to the expected SnO₂–Co₄Nb₂O₉ OR.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 78| Part 4| August 2022| Pages 695-709

https://doi.org/10.1107/S2052520622006758

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