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Two-dimensional small-angle X-ray scattering from as-grown and heat-treated synthetic quartz by Pedro L. Guzzo; Armando H. Shinohara; Anastacia E. F. Santos; Sérgio S. Funari; Shigeo Daito is a Materials Science article available to read on EtoBox.
What is Two-dimensional small-angle X-ray scattering from as-grown and heat-treated synthetic quartz about?
The small-angle X-ray scattering (SAXS) in as-grown and heat-treated quartz crystals was investigated as a function of the azimuth angle around the primary beam. For this, samples parallel to (10 1 10) were extracted from Z-and ÀXgrowth sectors of a synthetic quartz bar which had the OH content evaluated by infrared spectroscopy (IRS). In addition, SAXS and IRS were independently recorded as a function of heating temperature. As a result, the two-dimensional SAXS images revealed an anisotropic pattern randomly decorated by lowintensity Kossel lines. The intensities were projected along specific directions or were axially integrated around the primary beam. It was observed that the Porod invariant (Q) increased and the Kossel lines moved slightly to higher q values with increasing temperature. The effect of the sample orientation on the Q value and the lack of a clear relationship between Q and OH content suggested that the diffuse scattering due to the periodicity of the crystal lattice played an important role in the small-angle scattering of quartz. The net scattering intensities produced by heat-treatment at 873 K were attributed to molecular water aggregates created by the diff
Who reads Two-dimensional small-angle X-ray scattering from as-grown and heat-treated synthetic quartz?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Pedro L. Guzzo; Armando H. Shinohara; Anastacia E. F. Santos; Sérgio S. Funari; Shigeo Daito
- Publisher
- International Union of Crystallography; Blackwell Publishing Inc.; International Union of Crystallography (IUCr) (ISSN 0021-8898)
- Published
- 2007
- Language
- EN
- Field
- Materials Science (Physical Sciences)