Open AccessJournal Article
The Rietveld method
TLDR
In this paper, the early days of the Rietveld method are described, along with a retrospective view of its application in various areas of physics, such as X-ray and neutron analysis.Abstract:
Introduction to the Rietveld Method 1. The early days: a retrospective view 2. Mathematical aspects of Rietveld refinement 3. The flow of radiation in a polycrystalline material 4. Data collection strategies: fitting the experiment to the need 5. Background modelling in Rietveld analysis 6. Analytical profile fitting of X-ray powder diffraction profiles in Rietveld analysis 7. Crystal imperfection broadening and peak shape in the Rietveld method 8. Bragg reflection profile shape in X-ray powder diffraction patterns 9. Restraints and constraints in Rietveld refinement 10. Rietveld refinement with time-of-flight powder diffraction data from pulsed neutron sources 11. Combined X-ray and neutron Rietveld refinement 12. Rietveld analysis programs Rietan and Premos and special applications 13. Position - constrained and unconstrained powder-pattern-decomposition methods 14. Ab initio structure solutions with powder diffraction dataread more
Citations
More filters
Journal ArticleDOI
Micro-scale plastic deformation of polycrystalline Ti3SiC2 under room-temperature compression
Yanchun Zhou,Zhimei Sun +1 more
TL;DR: In this paper, the micro-scale plastic deformation of polycrystalline Ti3SiC2 ceramic under compression test was investigated and the results demonstrate that the material is damage tolerant and samples are shear fractured upon failure.
Investigation of the structure of ettringite by time-of-flight neutron powder diffraction techniques Locality: synthetic
M. R. Hartman,R. Berliner +1 more
Journal ArticleDOI
Defect structure of quenched γ-BICOVOX by combined X-ray and neutron powder diffraction
TL;DR: A detailed analysis of the defect structure of the Co doped BIMEVOX solid electrolyte, Bi 2 V 1 − x Co x O 5.5 − 3x 2 (x = 0.1 and x =0.2), quenched from high temperature, has been carried out using X-ray and neutron powder diffraction data measured at room temperature as mentioned in this paper.
Journal ArticleDOI
X-ray and neutron powder diffraction study of the double perovskites Ba2LnSbO6 (Ln=La, Pr, Nd and Sm)
Wen Tian Fu,D.J.W. IJdo +1 more
TL;DR: In this article, it was shown that the structure of Ba2LnSbO6 with Ln = La, Pr, Nd and Sm is neither monoclinic nor cubic as were previously reported.
Journal ArticleDOI
PMMA-titania nanocomposites: Properties and thermal degradation behaviour
T.E. Motaung,Adriaan S. Luyt,Federica Bondioli,Massimo Messori,Maria Luisa Saladino,Alberto Spinella,Giorgio Nasillo,Eugenio Caponetti +7 more
TL;DR: In this article, the effect of the crystalline phase and the amount of titania, in the range 1e5 wt.%, on morphology, mechanical properties and thermal degradation kinetics of PMMA was investigated by means of X-ray diffractometry (XRD), transmission electron microscopy (TEM), 13 C cross-polarization magic-angle spinning nuclear magnetic resonance spectroscopy ( 13 C{ 1 H}CP-MAS NMR), including the measurement of proton spinelattice relaxation time in the rotating frame (T1r(H)),