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 7
(a) Twelve possible (six unique) orientations of cassiterite (purple) in [010]_Cst orientation on Co₄Nb₂O₉ seed (gray) in [001]_Crn-t orientation. (b) Angles between c axes of the domains, at 67.6° angle, the domains are in (101) twin orientation. (c) Formation of domains 1 and 4 gives a contact twin. The formation of additional SnO₂ domains for a coplanar twin on the same seed grain requires epitaxial growth of SnO₂ at 60° (domains 6 and $[{\bar 5}]$ ) and local recrystallization of these domains to 6′ and $[{\bar 5}^\prime]$ orientation to yield the (101) TB contacts.

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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