1967
DOI: 10.1107/s0365110x67000234
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Line profiles of neutron powder-diffraction peaks for structure refinement

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Cited by 3,415 publications
(1,666 citation statements)
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“…O programa utiliza um algoritmo baseado no ajuste por mínimos quadrados para refinar um modelo estrutural teórico em relação a difratogramas reais. Uma extensa bibliografia sobre o assunto pode ser encontrada, porém não é objetivo deste trabalho o aprofundamento teórico na técnica, que pode ser consultada nas diversas referências apresentadas [1][2][3][4][5][6].…”
Section: Introductionunclassified
“…O programa utiliza um algoritmo baseado no ajuste por mínimos quadrados para refinar um modelo estrutural teórico em relação a difratogramas reais. Uma extensa bibliografia sobre o assunto pode ser encontrada, porém não é objetivo deste trabalho o aprofundamento teórico na técnica, que pode ser consultada nas diversas referências apresentadas [1][2][3][4][5][6].…”
Section: Introductionunclassified
“…Rietveld refinement [12] of XRD data was performed in TOPAS (Bruker) software package aiming at determination of alpha and gamma alumina quantities as well as estimation of the degree of crystallinity. Since the amorphous phase is demonstrated as two broad halos, or humps, in diffraction patterns, two pseudo-Voigt profiles were used for its fitting, similarly to [13], the background was fitted by a Chebyshev polynomial of the first kind with only one coefficient being refined during the Rietveld refinement procedure.…”
Section: Coating Characterisationmentioning
confidence: 99%
“…Diffraction line-broadening analysis [8] can be used to quantify structural defects related to both size (stacking and twin faults, low-and high-angle boundaries) and strain (dislocations and point defects). Observed x-ray diffraction patterns were modeled with a Rietveld-refinement program [9,10]. The refined lattice parameters changed with increasing carbon content in accord with previously published studies [11].…”
Section: Discussionmentioning
confidence: 70%