Results 11 to 20 of about 32,911 (288)
Rietveld refinement of amorphous SiO2 prepared via sol–gel method
Materials Letters, 2006 Abstract Using the Rietveld refinement, we analyze the structural evolution under thermal treatment of silica xerogel samples prepared by the sol–gel method with molar ratio ( R ) of water to TEOS of R = 5 and R = 11.66. We refine the structure of compounds using the Maud program and we found the unit cell parameters and atomic positions of the
Martinez, J. +4 more
openaire +4 more sources
Crystals, 2018 The Rietveld method is the most reliable and powerful tool for refining crystal structure when powder diffraction data are available. It requires that the structure model to be adjusted is as close as possible to the true structure.
Angela Altomare +6 more
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Synthesis and characterization of zinc oxide nanoparticles via oxalate co-precipitation method
Materials Letters: X, 2022 Zinc Oxide nanoparticles (ZnO NPs) were synthesized as a powder using the oxalate co-precipitation method after calcination at 700 °C. Zine sulfate was used as a zinc soluble source, and oxalic acid was used as a Catalyst. The reaction was carried out at
Natheer B. Mahmood +3 more
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Yankuang ceshi, 2019 BACKGROUND The content of minerals in kyanite can be analyzed by chemical phase method, but the analytical process is very tedious. Moreover, the existence of heteromorphism and refractory minerals can affect the accuracy of analysis results. An internal
RAN Jing +3 more
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Structural and Morphological Characterization of the Chromium-doped β-Spodumene to Ceramic Pigment
Brazilian Journal of Radiation Sciences, 2022 The structural and morphological properties of the novel chromium-doped β-spodumene based ceramic pigment were evaluated aiming to study its chemical and thermal stability in industrial applications.
Ricardo Ferrari Ferraz +3 more
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Determination of metallization degree of pre-reduced chromite with image and rietveld analysis [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2020 Metallization degree of pre-reduced chromite was determined using two methods. The chromite samples were reduced in the solid state by methane-hydrogen gas mixtures.
Leino T., Taskinen P., Eric R.H.
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Chemical and structural characterization of fibrous richterite with high environmental and health relevance from Libby, Montana (USA) [PDF]
, 2016 This study reports new structural and spectroscopic data of a sample of fibrous richterite from Libby, Montana (USA). The OH-stretching region was investigated by FT-IR. The spectrum showed, except for the typical absorption band at 3671 cm-1 assigned to
BALLIRANO, Paolo, PACELLA, Alessandro
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Revista de Investigación de Física, 2021 The Rietveld refinement method has taken high relevance since its creation. Nowadays, it is an useful tool in many fields of industry, materials science, and technology.
Diego Alberto Flores Cano +5 more
doaj
Crystal Structure Refinement of Synthetic Pure Gyrolite
Medžiagotyra, 2015 Pure calcium silicate hydrate – gyrolite was prepared under the saturated steam pressure at 473 K temperature in rotating autoclave. The crystal structure of synthetic gyrolite was investigated by X-ray diffraction and refined using Le Bail, Rietveld and
Arūnas Baltušnikas +5 more
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Synthesis and electrochemical properties of Mn-doped Li2Mn0.1Ti1.9(PO4)3 materials
Frontiers in Chemistry, 2023 The hunt for a higher power storage, relatively inexpensive, non-polluting battery technology is currently a pressing issue because of the rapid growth of the worldwide economic and the progressively significant environmental pollution.
Lixia Sun +4 more
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