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
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CONCENTRATION QUENCHING OF THE Eu3+-ACTIVATED LUMINESCENCE IN SOME LAYERED PEROVSKITES WITH TWO-DIMENSIONAL ARRANGEMENT
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Colloidal Bi2S3 Nanocrystals: Quantum Size Effects and Midgap States
Mauro Aresti,Michele Saba,Roberto Piras,Daniela Marongiu,Guido Mula,Francesco Quochi,Andrea Mura,Carla Cannas,Mauro Mureddu,Andrea Ardu,Guido Ennas,Vasco Calzia,Alessandro Mattoni,Anna Maria Giovanna Musinu,Giovanni Bongiovanni +14 more
TL;DR: In this paper, the authors show that a useful blueshift, in the range of hundreds of meV, is achieved in ultra-small nanocrystals, below 1.5 nm in size.
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On-line X-ray diffraction for quantitative phase analysis: Application in the Portland cement industry
TL;DR: In this article, an X-ray diffraction (XRD) analyzer capable of continuously monitoring phase abundances for use in process plant control was designed and installed in a Portland cement manufacturing plant, where the data are then analyzed using a Rietveld analysis method to obtain a quantitative estimate of each of the phases present.
Journal ArticleDOI
Effect of the cerium content on the structural and electrochemical properties of the La0.7−xCexMg0.3Ni2.875Mn0.1Co0.525 (x=0–0.5) hydrogen storage alloys
TL;DR: In this paper, the effect of the cerium content on the structural and electrochemical properties of the La0.7−xCexMg0.3Ni2.525 (x=0−0.5) hydrogen storage alloys has been studied systematically.
Dissertation
A Rietveld-Approach for the Analysis of Neutron Time-of-Flight Transmission Data
TL;DR: In this article, a technique to obtain crystallographic information on a sample with a temporal resolution in the order of ten seconds is presented, derived from neutron time-of-flight (TOF) transmission patterns utilising neutrons traveling through a sample without interaction.