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Figure 2
Schematic representation of the circular model (left panels) and the elliptical model (right panels) of the modulated magnetic ordering in CaMn7O12. The slices of the hexagonal unit cell at constant [z=0,{{1} \over {6}},{{2} \over {6}}] and [{{3} \over {6}}] coordinates are shown. The longer and shorter arrows represent the ordered magnetic moments of Mn3+ and Mn4+ ions. The Mn3+ and Mn4+ ions with the same z coordinate are antiparallel. The directions of the magnetic moments at [z={{4} \over {6}}] and [z={{5} \over {6}}] (not shown) can be obtained from Table 7[link]. The φ angle between the Mn3+ magnetic moment direction and the a axis is indicated for each layer.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 68| Part 3| May 2012| Pages 240-249
doi:10.1107/S0108768112008038
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