> > PS: Partial occupancy is not the same as disorder. You can have > well-ordered different occupancies that manifest themselves then in > superstructure patterns. Common in small molecule/materials. >
Hello Bernhard Agree with everything you said up till this point, but I think the owners of the "site occupancy disorder" websites below would disagree that partial occupancy is not the same as disorder! http://www.ucl.ac.uk/~uccargr/sod.htm http://www.tcm.phy.cam.ac.uk/castep/documentation/WebHelp/Html/thCastepDisorder.htm There are also many research papers on partial occupancy disorder of superlattice materials in the solid state, eg: http://www.researchgate.net/publication/226559734_Order-disorder_behavior_in_KNbO3_and_KNbO3KTaO3_solid_solutions_and_superlattices_by_molecular-dynamics_simulation Cheers -- Ian > >
