Results 11 to 20 of about 10,849 (249)

Rietveld refinement of whitlockite-related K0.8Ca9.8Fe0.2(PO4)7

open access: yesActa Crystallographica Section E, 2010
The title compound, K0.8Ca9.8Fe0.2(PO4)7 (potassium decacalcium iron heptaphosphate), belongs to the whitlockite family. The structure is built up from several types of metal–oxygen polyhedra: two [CaO8], one [CaO7] and one [(Ca/Fe)O6 ...
Igor V. Zatovsky   +4 more
doaj   +1 more source

Synthesis of CuO and Ce-doped CuO nanosheets; characterization, optical and magnetic properties [PDF]

open access: yesProgress in Physics of Applied Materials, 2023
In this article, the structural, magnetic, and optical properties of CuO doped by cerium metal ions as a rare earth element synthesized by the hydrothermal method have been investigated.
Hasan Khaleghi
doaj   +1 more source

Inter-comparison of lattice parameters and evaluation of peak-shift obtained by Rietveld refinements

open access: yesResults in Physics, 2019
This paper addresses the disparity that exists among different estimations of the structural parameters obtained from an identical structure using the Rietveld refinement.
Masami Tsubota   +2 more
doaj   +1 more source

Rietveld refinement of langbeinite-type K2YHf(PO4)3

open access: yesActa Crystallographica Section E, 2009
Potassium yttrium hafnium tris(orthophosphate) belongs to the langbeinite-family and is built up from [MO6] octahedra [in which the positions of the two independent M sites are mutually occupied by Y and Hf in a 0.605 (10):0.395 (10 ...
Nikolay S. Slobodyanik   +2 more
doaj   +1 more source

The Effect of Skelp Thickness on Precipitate Size and Morphology for X70 Microalloyed Steel Using Rietveld Refinement (Quantitative X-ray Diffraction)

open access: yesCrystals, 2018
Precipitates in thin-walled (11 mm) and thick-walled X70 (17 mm) microalloyed X70 pipe steel are characterized using Rietveld refinement (a.k.a. quantitative X-ray diffraction (QXRD)), inductively coupled plasma mass spectrometry (ICP), and energy ...
Corentin Chatelier   +3 more
doaj   +1 more source

Rietveld Refinement and X-ray Absorption Study on the Bonding States of Lanthanum-Based Perovskite-Type Oxides La1−xCexCoO3

open access: yesCrystals, 2021
Metal-oxygen bonding of the Ce-doped LaCoO3 system remains largely unexplored despite extensive studies on its magnetic properties. Here, we investigate the structure and local structure of nanoscale La1−xCexCoO3, with x = 0, 0.2, and 0.4, using the ...
Duc-Chau Nguyen   +4 more
doaj   +1 more source

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

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

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

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

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