TY - JOUR
T1 - Constraints, 'order' and new types of modulated phases
AU - Withers, Ray L.
PY - 2004/1/1
Y1 - 2004/1/1
N2 - The strongest crystal chemical constraints are usually local and fix local parameters such as bond lengths, angles and even stoichiometries (although not necessarily orientations) in local co-ordination polyhedra. Surprisingly often, however, constraints of this sort are insufficiently severe or long range enough to lead to well-defined, conventional 3-d crystalline order. Instead quite distinct new types of"modulated structure,commonly associated with the existence of sharp, highly structured, characteristic diffuse intensity distributions, can result.
AB - The strongest crystal chemical constraints are usually local and fix local parameters such as bond lengths, angles and even stoichiometries (although not necessarily orientations) in local co-ordination polyhedra. Surprisingly often, however, constraints of this sort are insufficiently severe or long range enough to lead to well-defined, conventional 3-d crystalline order. Instead quite distinct new types of"modulated structure,commonly associated with the existence of sharp, highly structured, characteristic diffuse intensity distributions, can result.
KW - Local crystal chemical constraints
KW - New types of modulated structures
KW - Structured diffuse distributions
UR - http://www.scopus.com/inward/record.url?scp=33746310975&partnerID=8YFLogxK
U2 - 10.1080/00150190490462423
DO - 10.1080/00150190490462423
M3 - Article
SN - 0015-0193
VL - 305
SP - 69
EP - 74
JO - Ferroelectrics
JF - Ferroelectrics
ER -