Results 21 to 30 of about 252,441 (277)

Rietveld refinement of the mixed boracite Fe1.59Zn1.41B7O13Br

open access: yesActa Crystallographica Section E, 2009
The structural characterization of the new iron–zinc heptaborate bromide with composition Fe1.59Zn1.41B7O13Br, prepared by chemical transport is reported.
Sandra Ulloa-Godínez   +4 more
doaj   +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

Rietveld Structure Refinement of Cu-Trien Exchanged Nontronites

open access: yesFrontiers in Chemistry, 2018
The Rietveld analysis of X-ray powder diffraction patterns is used widely for obtaining the structural information of clay minerals. However, the complex hydration behavior and the variability of interlayer contents are often considered difficult to be ...
Xiaoli Wang, Libing Liao
doaj   +1 more source

Investigation and production of high purity lanthanum and barium hexaaluminate ceramic powders

open access: yesOpen Ceramics, 2023
This study presents synthesis of Lanthanum Hexaaluminate (LHA: LaAl11O18) and Barium Hexaaluminate (BHA: BaAl12O19) with co-precipitation (CP), wet impregnation (W) and solid-state routes with different sintering profiles and carbon templating route. The
Tijen Seyidoglu
doaj   +1 more source

Relational Concurrent Refinement: Timed Refinement [PDF]

open access: yes, 2011
Data refinement in a state-based language such as Z is defined using a relational model in terms of the behaviour of abstract programs. Downward and upward simulation conditions form a sound and jointly complete methodology to verify relational data ...
Derrick, John   +4 more
core   +1 more source

Rietveld refinement of KLaTiO4 from X-ray powder data

open access: yesActa Crystallographica Section E, 2011
Potassium lanthanum titanate(IV), KLaTiO4, has been synthesized by conventional solid-state reaction. It crystallizes isotypically with the NaLnTiO4 (Ln = La, Pr, Nd, Sm, Eu, Gd, Y and Lu) family.
Bai-Chuan Zhu, Kai-Bin Tang
doaj   +1 more source

Rietveld Refinement ZnO powders (Fullprof)

open access: yes, 2022
The authors calculated a complete lattice parameters characterization by Rietveld refinement using MAUD program. Input information, such as cell parameters, atomic positions, and space groups, was collected from the International Centre for Diffraction ...
Lozano Rosas, R (via Mendeley Data)
core   +1 more source

Rietveld refinement of the langbeinite-type mixed-metal phosphate K2Ni0.5Zr1.5(PO4)3

open access: yesActa Crystallographica Section E, 2014
Dipotassium [nickel(II) zirconium(IV)] tris(orthophosphate) was prepared from a self-flux in the system K2O–P2O5–NiO–K2ZrF6. The title compound belongs to the langbeinite family and is built up from two [MO6] octahedra [M = Ni:Zr with mixed occupancy in ...
Igor V. Zatovsky
doaj   +1 more source

Pressing the Limits of Rietveld Refinement [PDF]

open access: yesAustralian Journal of Physics, 1988
Two examples are given, one with X-ray data and one with netltron data, of the determination of structural detail which appear to be at the edge of current possibility for the Rietveld structure-refinement method. In the first example, 2·2 wt% Sb substituted in CalO(P04)6F2 was located.
openaire   +1 more source

Rietveld refinement of Ba5(AsO4)3Cl from high-resolution synchrotron data

open access: yesActa Crystallographica Section E, 2008
The apatite-type compound Ba5(AsO4)3Cl, pentabarium tris[arsenate(V)] chloride, has been synthesized by ion exchange at high temperature from a synthetic sample of mimetite (Pb5(AsO4)3Cl) with BaCO3 as a by-product. The results of the Rietveld refinement,
Wendy J. Harrison   +3 more
doaj   +1 more source

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