Full-profile search–match by the Rietveld method
نویسندگان
چکیده
منابع مشابه
Modelling the silica glass structure by the Rietveld method
To refine amorphous structures like crystalline ones is impossible. This statement needs now some reconsideration in the case of silica glass. Starting with a microstrained crystalline model deriving from the α-carnegieite structure, atomic coordinates refinements by the Rietveld method prove to be possible. The study credibility is supported by the simultaneous fit of neutron and X-ray diffrac...
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ReO2 presents two crystalline variants, with monoclinic and orthorhombic structures. The former is metastable and irreversibly transforms to an orthorhombic structure above 460oC. The structure of the latter was determined from studies on monocrystalline samples, whereas for the monoclinic variant there are no single crystals available so far. It was found only one monoclinic variant and the st...
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Two samples of compound PrBa&u,Os-s were prepared -one sample was obtained by starting with the oxalate coprecipitation technique in making the powder precursor following by the calcined and sintering process under ambient oxygen pressure, the other sample was obtained by using the conventional ceramic techniques. The structures of the two samples in crystalline phases have been refined from X-...
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The Rietveld method is the most straightforward and statistically correct approach for the re®nement of crystal structure parameters from powder diffraction data. The equivalent two-stage approach, involving the re®nement of structural parameters based on integrated intensities extracted using the Pawley method, is extremely useful in circumstances such as the global optimization methods of str...
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ژورنال
عنوان ژورنال: Journal of Applied Crystallography
سال: 2019
ISSN: 1600-5767
DOI: 10.1107/s160057671900342x