Corrigendum to 'The composition, unit cell parameters and microstructure of quartz during phase transformation from α to β as examined by in-situ high-temperature X-ray powder diffraction' [J. Phys. Chem. Solid. 117 (2018) 131–138]

Autor: R.M.G. Rajapakse, C.H. Manoratne, Kohobhange S.P. Karunadasa, H.M.T.G.A. Pitawala
Rok vydání: 2018
Předmět:
Zdroj: Journal of Physics and Chemistry of Solids. 119:315
ISSN: 0022-3697
DOI: 10.1016/j.jpcs.2018.03.033
Popis: The effect of heating on composition, unit cell parameters and microstructure of quartz during phase transformation from α to β has been investigated by in-situ high-temperature X-ray powder diffraction. Results indicate that the consecutive increments in temperature (1 °C) from 572 °C to 574 °C accounted for a substantial change in composition where the relative amount of α-quartz is greater than β-quartz at 572 °C and vice versa at 573 °C. Quartz-β-high is the only stable form available beyond the transition temperature. A substantial increase in unit cell volume observed during the initial stage of the heating due to elongation of lattice constant in all the crystallographic directions and insignificantly changed during the phase transition period and beyond the transition temperature. Both crystallite size and lattice strain simultaneously increased close to phase transition temperature and reached the maximum at the beginning of the phase transition. Both parameters abruptly decreased above the temperature of 572 °C. The close resemblance in lattice strain observes for both polymorphs at the beginning of the phase transformation that coincides with the variation in crystallite size. The phase transition takes place under uniform lattice strain and compatible crystallite size that ensures the uniform phase conversion from α to β quartz.
Databáze: OpenAIRE
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