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Figure 9
Schematic of NbO6 octahedron in the P42mc phase at 300°C highlighting the polar Nb displacement (difference between Nb—O5 and Nb—O5′ bond lengths ∼ 0.243 Å). The symmetry operators acting upon the Nb—O5 and Nb—O5′ bonds are x, y, z and [1-y, 1-x, -{1\over 2} + z], respectively.

Volume 4| Part 3| May 2017| Pages 215-222
ISSN: 2052-2525