Coupled intra- and inter-tunnel short-range order in hollandites: a case study of mannardite Ba[(Ti4+)6(V3+)2]O16
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Mannardite, Ba[(Ti4+)6(V3+)2]O16, a mineral of the hollandite supergroup, is characterized by a tunnel structure built up from double chains of edge-sharing octahedra. It shows complex order/disorder phenomena that are often related to the occurrence of diffus... ...
