title: A modulation wave approach to the order hidden in disorder.
abstract: The usefulness of a modulation wave approach to understanding and interpreting the highly structured continuous diffuse intensity distributions characteristic of the reciprocal spaces of the very large family of inherently flexible materials which exhibit ordered 'disorder' is pointed out. It is shown that both longer range order and truly short-range order are simultaneously encoded in highly structured diffuse intensity distributions. The long-range ordered crystal chemical rules giving rise to such diffuse distributions are highlighted, along with the existence and usefulness of systematic extinction conditions in these types of structured diffuse distributions.
authors.affiliation: Research School of Chemistry, Australian National University, Building 1.38, Sullivan's Creek Road, Canberra, Australian Central Territory 0200, Australia.
authors.forename: Ray
authors.initials: R
authors.lastname: Withers
keywords: crystalline structure; long-range order; modulation wave approach; ordered ‘disorder’; short-range order