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Figure 2
Structure and magnetization of bixbyite. (a) Polyhedral model of bixbyite, where the M1 octahedra are shaded blue and the M2 polyhedra are green. The red spheres are oxygen atoms each tetrahedrally coordinated by M. The octahedra share corners and edges to make a three-dimensional framework. (b) M-only atoms of bixbyite showing the near-neighbors of the M1 sites (blue) surrounded by the M2 sites (green). Nearly perfect hexagons of M1(M2)6 result and share corners to make a three-dimensional cubic network. (c) Field-cooled (FC) and zero-field- cooled (ZFC) magnetization data for bixbyite. The inset shows the 1/χ behavior, the red line indicating the Curie–Weiss fit.

IUCrJ
Volume 5| Part 4| July 2018| Pages 410-416
ISSN: 2052-2525
https://doi.org/10.1107/S2052252518006590