What is it about?
The origin of the modulation relates to the ordering of K cations within the hexagonal close packing of the PO anions. The driving forces for the modulation of the other cations are In-P and K-P interactions. The modulation of O atoms of rigid PO units follows the cations in order to stabilize the InO octahedron.
Why is it important?
The origin of the modulation is discussed in comparison with the structures of NaInP, [alpha]- and [beta]-NaIn(PO), NaFe(PO) and RbIn(PO).
Read the Original
This page is a summary of: The incommensurate structure of K3In(PO4)2, Acta Crystallographica Section B Structural Science, January 2003, International Union of Crystallography, DOI: 10.1107/s0108768102021195.
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