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Results for DC.creator="A." AND DC.creator="Albinati" in section 8.6.2 of volume C |
Statistical validity
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.5, p. 712 [ doi:10.1107/97809553602060000614 ]
... the Rietveld method. Structure and statistics in crystallography, edited by A. J. C. Wilson. New York: Adenine Press. Prince, E. (1993 ... method. IUCr Monographs on Crystallography, No. 5, edited by R. A. Young, pp. 43-54. Oxford University Press. Sakata, M. & Cooper ...
Preferred orientation and texture
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.4, p. 712 [ doi:10.1107/97809553602060000614 ]
... and texture 8.6.2.4. Preferred orientation and texture Preferred orientation is a formidable problem which can drastically affect the measured intensities. A simple correction formula for plate-like morphology was given by ... in the Rietveld refinement code by Von Dreele (1997). A general model of the texture has also been described ...
Background
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.3, p. 711 [ doi:10.1107/97809553602060000614 ]
... of disorder or thermal diffuse scattering (TDS), which rises to a maximum at the Bragg positions. An alternative approach is to include a background function in the refinement model (Richardson, 1993). If ... method. IUCr Monographs on Crystallography, No. 5, edited by R. A. Young, pp. 102-110. Oxford University Press. International Tables ...
Peak-shape function (PSF)
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.2, p. 711 [ doi:10.1107/97809553602060000614 ]
... dispersive data are (Young & Wiles, 1982): where . [eta] is a parameter that defines the fraction of Lorentzian character in the ... is the gamma function: when n = 1, Pearson VII becomes a Lorentzian, and when n = [infinity], it becomes a Gaussian. The tails of a Gaussian distribution fall off ...
Indexing
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.1, p. 711 [ doi:10.1107/97809553602060000614 ]
... little difficulty in indexing the pattern, provided that there are a few well resolved lines. Without this knowledge, the indexing requires, as a starting point, the measurement of the d values of low ... Pawley (1981), Cheetham (1993) and Werner (2002). References Cheetham, A. K. (1993). Ab initio structure solution with powder ...
Problems with the Rietveld method
International Tables for Crystallography (2006). Vol. C, Section 8.6.2, pp. 711-712 [ doi:10.1107/97809553602060000614 ]
... of certain problems that may give rise to failure in a Rietveld refinement. 8.6.2.1. Indexing | | The first step in refinement is ... little difficulty in indexing the pattern, provided that there are a few well resolved lines. Without this knowledge, the indexing requires, as a starting point, the measurement of the d values of ...
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.5, p. 712 [ doi:10.1107/97809553602060000614 ]
... the Rietveld method. Structure and statistics in crystallography, edited by A. J. C. Wilson. New York: Adenine Press. Prince, E. (1993 ... method. IUCr Monographs on Crystallography, No. 5, edited by R. A. Young, pp. 43-54. Oxford University Press. Sakata, M. & Cooper ...
Preferred orientation and texture
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.4, p. 712 [ doi:10.1107/97809553602060000614 ]
... and texture 8.6.2.4. Preferred orientation and texture Preferred orientation is a formidable problem which can drastically affect the measured intensities. A simple correction formula for plate-like morphology was given by ... in the Rietveld refinement code by Von Dreele (1997). A general model of the texture has also been described ...
Background
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.3, p. 711 [ doi:10.1107/97809553602060000614 ]
... of disorder or thermal diffuse scattering (TDS), which rises to a maximum at the Bragg positions. An alternative approach is to include a background function in the refinement model (Richardson, 1993). If ... method. IUCr Monographs on Crystallography, No. 5, edited by R. A. Young, pp. 102-110. Oxford University Press. International Tables ...
Peak-shape function (PSF)
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.2, p. 711 [ doi:10.1107/97809553602060000614 ]
... dispersive data are (Young & Wiles, 1982): where . [eta] is a parameter that defines the fraction of Lorentzian character in the ... is the gamma function: when n = 1, Pearson VII becomes a Lorentzian, and when n = [infinity], it becomes a Gaussian. The tails of a Gaussian distribution fall off ...
Indexing
International Tables for Crystallography (2006). Vol. C, Section 8.6.2.1, p. 711 [ doi:10.1107/97809553602060000614 ]
... little difficulty in indexing the pattern, provided that there are a few well resolved lines. Without this knowledge, the indexing requires, as a starting point, the measurement of the d values of low ... Pawley (1981), Cheetham (1993) and Werner (2002). References Cheetham, A. K. (1993). Ab initio structure solution with powder ...
Problems with the Rietveld method
International Tables for Crystallography (2006). Vol. C, Section 8.6.2, pp. 711-712 [ doi:10.1107/97809553602060000614 ]
... of certain problems that may give rise to failure in a Rietveld refinement. 8.6.2.1. Indexing | | The first step in refinement is ... little difficulty in indexing the pattern, provided that there are a few well resolved lines. Without this knowledge, the indexing requires, as a starting point, the measurement of the d values of ...
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