Results 11 to 20 of about 33,137,902 (193)

The Rietveld Refinement Method: Half of a Century Anniversary [PDF]

Crystal Growth & Design, 2021
T. Runčevski, Craig M. Brown
semanticscholar   +2 more sources

Synthesis of hydroxyapatite doped with single and compound dopants and study upon the effect of crystal phase on its thermoluminescence response irradiated by gamma rays [PDF]

مجله علوم و فنون هسته‌ای, 2023
In this research work, hydroxyapatite samples doped with cerium, gadolinium, and a combination of these two dopants were synthesized through the hydrothermal method.
P. Taghipour Niar, ّF. Zolfagharpour, F. Ziaie, H. Daneshvar   +3 more
doaj   +1 more source

Oxide layer characterization by XRD and Rietveld refinements in maraging steel 300 aged in steam atmosphere

Brazilian Journal of Radiation Sciences, 2021
Maraging steels are martensitic steels hardened by precipitation of intermetallic compounds in thermal aging, with good machining properties and high strength, fracture toughness and corrosion resistance, being used in aircraft parts and rocket motor ...
Vanessa Sanches Pereira da Silva, José Roberto Ferreira Neto, Silvia Lucas Ferreira da Silva, Diogo Costa de Oliveira, Fábio de Camargo   +4 more
doaj   +1 more source

Synthesis and Crystal Structure of the Ordered Vacancy Compound Cu3In5Se9

Orbital: The Electronic Journal of Chemistry, 2021
This work focuses on the preparation and structural characterization of the semiconductor Cu3In5Se9, an important member of ordered vacancy compounds family, belonging to the semiconductor system I3-III5--VI9, where denotes the cation vacancy which is ...
Gerzon E. Delgado, Giovanni Marin, Syed Wasim, Carlos Rincón, Dinesh P. Singh   +4 more
doaj   +1 more source

Quantitative phase analysis of anhydrous clinker Portland using Rietveld method

Reviews in Inorganic Chemistry, 2022
Modern cements are complex materials with well-defined compositions that reach to high and consistent results. Automated techniques such as Rietveld analysis lead to provide an understanding of the composition and polymorphism of cement phases that could
Dounia Tlamsamania, Mbark Ait-Mouha, S. Slassi, Y. Khaddam, Diana Londono Zuluaga, K. Yamni   +5 more
semanticscholar   +1 more source

Accuracy and Error Sources of the Rietveld Full Pattern Fitting Method in Quantitative Analysis of Illite Ores

Yankuang ceshi, 2022
BACKGROUND Illite is an important mineral resource. It is of great theoretical and practical significance to accurately obtain the mineral composition and content of illite ores. The Rietveld full pattern fitting method uses the whole diffraction pattern
CHEN Aiqing, ZHANG Lixue, LI Qiang, ZHU Jianxi, LI Shangying, HE Hongping   +5 more
doaj   +1 more source

Quantitative Phase Analysis by X-ray Diffraction—Doping Methods and Applications

Crystals, 2020
X-ray powder diffraction is an ideal technique for the quantitative analysis of a multiphase sample. The intensities of diffraction lines of a phase in a multiphase sample are proportional to the phase fraction and the quantitative analysis can be ...
Stanko Popović
doaj   +1 more source

The Rietveld Refinement in the EXPO Software: A Powerful Tool at the End of the Elaborate Crystal Structure Solution Pathway

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, Francesco Capitelli, Nicola Corriero, Corrado Cuocci, Aurelia Falcicchio, Anna Moliterni, Rosanna Rizzi   +6 more
doaj   +1 more source

Green Synthesis of Nanocomposite of Ag/Ag2O Using Coelomic Liquid: Optical Absorption Analysis [PDF]

Nanochemistry Research
In this research, silver and silver oxide (Ag/Ag2O) nanocomposites were synthesized using a green method at different concentrations of silver nitrate.
Esmaeil Shahriari, Morteza Raeisi, Karim Aliakbari   +2 more
doaj   +1 more source

Synthesis, Structure, and Luminescent Properties of the New Double Borate K3Eu3B4O12

Конденсированные среды и межфазные границы, 2020
The study established the formation of the new double borate K3Eu3B4O12. The Rietveld refi nement of the crystal structure revealed that K3Eu3B4O12 crystallises in the monoclinic syngony with unit cell parameters a = 10.6727(7) Å, b = 8.9086(6) Å, c = 13.
Evgeniy V. Kovtunets, Alexey K. Subanakov, Bair G. Bazarov   +2 more
doaj   +1 more source