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Figure 4
A scheme of the modulation functions of the atoms in the PO4 group as a function of t. The y component of the modulation is shown. The modulation functions have been simplified to emphasize the basic trends. Each jump of the tetrahedron at the discontinuity can be understood as a rotation around an axis going through the O1 and one of the O3 atoms. Symmetry code: (i) x1, -x2, x3, [{{1}\over{2}}+x_4].

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 62| Part 4| July 2006| Pages 556-566
doi:10.1107/S0108768106010238
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