Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Structural disorder in microcrystalline MgCl2

Structural disorder in microcrystalline MgCl2 Structural disorder in severely ground MgCl2 is interpreted on the basis of a Bernoullian model with four parameters, specifying both the size and the statistical sequence of the layers; their choice completely dictates the intrinsic shape of all the X‐ray diffraction lines. The X‐ray powder spectra are reasonably well reproduced over a wide range of Bragg distances (~1.7 < d < ~9 Å) for samples with various degrees of disorder. Practical criteria are given to derive the statistical parameters from the X‐ray spectra. Average crystal thickness as small as 20 Å across the layers is observed. From the usual structure with cubic packing in the Cl atoms, with increasing disorder at first the probabilities of cubic and hexagonal‐like interlayer shifts (Pcub and Phex) tend to become equal; the ultimate degree of disorder also involves ± 60° rotations between adjacent layers, with about the same probability as Pcub and Phex. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Crystallography Wiley

Structural disorder in microcrystalline MgCl2

Loading next page...
 
/lp/wiley/structural-disorder-in-microcrystalline-mgcl-2-paIKbC6Jpa

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Wiley
Copyright
Copyright © 1984 Wiley Subscription Services
ISSN
1600-5767
eISSN
1600-5767
DOI
10.1107/S0021889884011250
Publisher site
See Article on Publisher Site

Abstract

Structural disorder in severely ground MgCl2 is interpreted on the basis of a Bernoullian model with four parameters, specifying both the size and the statistical sequence of the layers; their choice completely dictates the intrinsic shape of all the X‐ray diffraction lines. The X‐ray powder spectra are reasonably well reproduced over a wide range of Bragg distances (~1.7 < d < ~9 Å) for samples with various degrees of disorder. Practical criteria are given to derive the statistical parameters from the X‐ray spectra. Average crystal thickness as small as 20 Å across the layers is observed. From the usual structure with cubic packing in the Cl atoms, with increasing disorder at first the probabilities of cubic and hexagonal‐like interlayer shifts (Pcub and Phex) tend to become equal; the ultimate degree of disorder also involves ± 60° rotations between adjacent layers, with about the same probability as Pcub and Phex.

Journal

Journal of Applied CrystallographyWiley

Published: Jan 1, 1984

There are no references for this article.