Results 21 to 30 of about 42,195 (291)

Chemical and structural characterization of fibrous richterite with high environmental and health relevance from Libby, Montana (USA) [PDF]

open access: yes, 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
core   +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

The crystal structure of trandolapril, C24H34N2O5: an example of the utility of raw data deposition in the powder diffraction file [PDF]

open access: yes, 2016
The crystal structure of trandolapril has been solved by parallel tempering using the FOX software package with laboratory powder diffraction data submitted to and published in the Powder Diffraction File.
Kaduk, JA, Reid, JW, Vickers, M
core   +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

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

Automatic Rietveld refinement by robotic process automation with RIETAN-FP

open access: yesScience and Technology of Advanced Materials: Methods, 2022
Rietveld analysis necessitates the manual trial-and-error refinement of various parameters. To reduce human costs and resources, we have developed a robotic process automation (RPA) system for the Rietveld analysis program RIETAN-FP.
Ryo Tamura   +5 more
doaj   +1 more source

Fifty years of Rietveld refinement: Methodology and guidelines in superconductors and functional magnetic nanoadsorbents

open access: yesRevista 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  

Quantitative Analysis of Mineral Composition of Kyanite by X-ray Diffraction with Rietveld Refinement Method

open access: yesYankuang 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
doaj   +1 more source

Rietveld refinement, magnetic and dielectric properties of Sr2+-Co2+-doped Zn2Y-type hexaferrites

open access: yesHybrid Advances, 2023
In this experimental study, Sr2+-Co2+ was doped in Zn2Y-type hexaferrite to improve its magnetic and dielectric properties. Sol-gel auto combustion was used to synthesize Ba2-xSrxZn2-yCoyFe12O22 (x ​= ​0.0, 0.4, 0.8 and y ​= ​0.0, 0.5, 1.0), and the ...
Ibrahim Mohammed   +3 more
doaj   +1 more source

Crystal Structure Refinement of Synthetic Pure Gyrolite

open access: yesMedžiagotyra, 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
doaj   +1 more source

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