Abstract
Layered hydroxides crystallize in a hexagonal structure and incorporate a number of different types of structural disorders as an exigency of anisotropic bonding. Structural disorder contributes to the non-uniform broadening of lines in the powder X-ray diffraction pattern. Common among the disorders are stacking faults, which broaden theh0ℓ/0kℓ reflections. Interstratification selectively broadens the 00l reflections and turbostratic disorder broadens the 0kℓ reflections. The line broadening caused by structural disorder has to be discounted before estimates of particle size are made by applying the Scherrer formula.
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Dedicated to Prof J Gopalakrishnan on his 62nd birthday.
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Thomas, G.S., Kamath, P.V. Line broadening in the PXRD patterns of layered hydroxides: The relative effects of crystallite size and structural disorder. J Chem Sci 118, 127–133 (2006). https://doi.org/10.1007/BF02708774
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DOI: https://doi.org/10.1007/BF02708774