Results 11 to 20 of about 11,223 (150)

Rietveld Refinement Analysis of Lampung Natural Zeolite Catalyst Impregnated Fe with Diffraction Method Using MAUD Software [PDF]

open access: yes, 2023
This research characterizes the space group and R-phase crystal structure using the XRD method and Rietveld refinement. Rietveld improvements using the Material Analysis Using Diffraction (MAUD) software are acceptable if the Rwp < 15% and Sig < 2%. MAUD
Navanti, Dovina; Environmental Engineering Department, Engineering of Faculty, Universitas Bhayangkara Jakarta Raya, 12550, Indonesia   +3 more
core   +1 more source

Study of Constitutive Behavior of Ferroelectrics via Self-Consistent Modeling and Neutron Diffraction [PDF]

open access: yes, 2007
The central goal of this study is to develop a reliable self-consistent model to describe the constitutive behavior of polycrystalline ferroelectrics and to predict their lattice strain and texture evolution. Starting with the model developed by Huber et
Motahari, Seyed-Maziar
core   +1 more source

Structure Analysis from Powder Diffraction Data: Rietveld Refinement in Excel

open access: yes, 2021
Powder diffraction is one of the most widely used analytical techniques for characterizing solid state materials. It can be used for phase or polymorph identification, quantitative analysis, cell parameter determination, or even full crystal structure ...
Evans, John S.O.   +3 more
core   +1 more source

Synthesis and crystal structure refinement by th Rietveld method of an antimony-bearing titanite Ca(Ti0.6Al0.2Sb0.2)OSiO4 [PDF]

open access: yes, 2009
A synthetic analogue, Ca(Ti0.6Al0.2Sb0.2)OSiO4, of antimony-bearing titanite of a composition similar to that found at St. Marcel-Praborna (Italy) was synthesized using ceramic methods and the crystal structure was refined using the Rietveld method. Unit-
Pannunzio Miner, Elisa Victoria   +1 more
core   +1 more source

Rietveld structure refinement of Pr doped zirconia

open access: yes, 2000
This work deals with the synthesis and Rietveld structure refinement of a zirconium-praseodymium yellow pigment prepared either by a traditional ceramic process route and by an unconventional synthesis method based on SHS (Self-Propagating High ...
Bondioli, Federica   +4 more
core   +2 more sources

Applied Rietveld refinement method in crystal structure determination

open access: yes, 2019
U ovom radu opisane su teorijske osnove rendgenske difrakcijske analize, objašnjena je Rietveldova metoda te postupak utočnjavanja kristalnih struktura primjenom Rietveldove metode.
Štefanović, Elza
core   +2 more sources

Structural studies into AM(_2)O(_7) framework materials and parametric Rietveld refinement [PDF]

open access: yes, 2006
This thesis investigates the structural properties of the AM2O7 family of materials, many of which show interesting thermal expansion properties and remarkably complex structures.
Stinton, Graham William
core  

Quantificação de fases argilominerais em matérias-primas cerâmicas pelo método de Rietveld [PDF]

open access: yes, 2013
Tese (doutorado) - Universidade Federal de Santa Catarina, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2013.O método de Rietveld é usado no refinamento das estruturas cristalinas dos materiais na forma de pó e na ...
Santos, Carla Margarete Ferreira dos
core  

Caracterização e estudos das propriedades no estado sólido do cloridrato de venlafaxina [PDF]

open access: yes, 2013
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Farmácia, Florianópolis, 2013.O cloridrato de venlafaxina (VEN) é um inibidor da recaptação da serotonina e norepinefrina eficaz no ...
Bernardi, Larissa Sakis
core  

Bayesian approach to the Rietveld refinement of Poisson-distributed powder diffraction data

open access: yes, 2010
The Rietveld method is based on a weighted least-squares fit of a model diffraction pattern to the step-scan data of a complete experimental X-ray or neutron diffraction pattern.
J. Bergmann, T. Monecke
core   +1 more source

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