Contribution
Disorder diffuse scattering in K-hollandite K1.54Mg0.77Ti7.23O16
Rosshirt, E.; Frey, F.; Boysen, H.
Neues Jahrbuch für Mineralogie - Abhandlungen Band 163 Heft 1 (1991), p. 101 - 115
27 références bibliographiques
publié: Aug 13, 1991
DOI: 10.1127/njma/163/1991/101
ArtNo. ESP154016301007, Prix: 29.00 €
Abstract
Diffuse X-ray scattering of synthetic K-hollandite was investigated at room temperature, 35 and 875 K. Most prominent are diffuse layers, diffuse satellite reflections superimposed on these layers, and a diffuse streak system. The analysis reveals that the decomposition into a 1-d substructure (K-chains) and a well ordered 3-d framework structure is an oversimplification. In particular, the framework distorts into column-like microdomains, the streak system is assigned to the interfaces between them. At high temperature the mutual influence is gradually lost.
Mots-clefs
Hollandite • disorder • diffuse scattering • tunnel structures • one-dimensional crystal • microdomains