Results 1 to 10 of about 13,692 (260)

Spotlight: efficient automated global optimization in rietveld analysis of diffraction data [PDF]

Scientific Reports
Performing reliable Rietveld analysis on tens or hundreds of powder diffraction datasets from parametric or time-resolved experiments often poses a bottleneck in extracting meaningful results from the data.
C. M. Biwer, Z. Feng, D. Finstad, M. McDonnell, M. Knezevic, M. McKerns, D. J. Savage, S. C. Vogel   +7 more
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Improved Method for Electron Powder Diffraction-Based Rietveld Analysis of Nanomaterials [PDF]

Nanomaterials
Multiphase nanomaterials are of increasing importance in material science. Providing reliable and statistically meaningful information on their average nanostructure is essential for synthesis control and applications.
Viktória K. Kis, Zsolt Kovács, Zsolt Czigány   +2 more
doaj   +2 more sources

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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Automatic Rietveld refinement by robotic process automation with RIETAN-FP

Science 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, Masato Sumita, Kei Terayama, Koji Tsuda, Fujio Izumi, Yoshitaka Matsushita   +5 more
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Structure and magnetic investigations of Ca1-xYxMnO3 (x=0, 0.1, 0.2, 0.3) and Mn4+/Mn3+ relation analysis [PDF]

Science of Sintering, 2010
Structure and magnetic features of nanostructured materials with general formula Ca1-xYxMnO3 (x = 0; 0.1; 0.2; 0.3) were investigated. Goldschmidt tolerance factor, Gt and global instability index, GII were calculated for Ca1-xYxMnO3 (x = 0, 0.25, 0.5,
Zagorac J., Bošković S., Matović B., Babić-Stojić B.   +3 more
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Effect of Ga and Zr Substitution on the Properties of Dy₂Fe_17−XZr_X and Dy₂Fe₁₆Ga_1−xZr_x (0 ≤ x ≤ 1) Intermetallic Compounds Prepared via Arc Melting Process

Magnetochemistry, 2020
The effects of substitution of Zr and Ga on the structural and magnetic properties of Dy2Fe17 intermetallic compound were investigated in this study. The Rietveld analysis confirmed that the crystalline system was a Th2Ni17 structure.
Jiba Nath Dahal, K.S. Syed Ali, S.R. Mishra, Dipesh Neupane   +3 more
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Eu3+ Site Distribution and Local Distortion of Photoluminescent Ca3WO6:(Eu3+, K+) Double Perovskites as High‐Color‐Purity Red Phosphors

Advanced Science, 2023
In this study, Eu3+ and K+ co‐doped Ca3WO6 double perovskite, a high‐color‐purity red phosphor, is quantitatively investigated using synchrotron X‐ray diffraction Rietveld refinement, energy dispersive X‐ray spectroscopy, and high‐resolution PL ...
Takahito Otsuka, Ryohei Oka, Tomokatsu Hayakawa   +2 more
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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
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Microstructure Evolution of TI/ZRO2 and TI/AL2O3 Composites Prepared by Powder Metallurgy Method [PDF]

Archives of Metallurgy and Materials, 2019
The current study were performed in order to assess the fabrication possibility of the metal-ceramic composites based on nanocrystalline substrates. The influence of the variable time of the high energy ball-milling (10, 30 and 50 h) on the structure ...
G. Dercz, I. Matuła, W. Gurdziel, N. Kuczera   +3 more
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Structural Analysis of Interstratified Illite-Smectite by the Rietveld Method

Crystals, 2021
Rietveld method is a powerful tool in obtaining structural information of clay minerals by using of X-ray diffraction (XRD) patterns. However, the interstratified illite-smectites (I-S) show various stacking defects preventing the direct application of ...
Xiaoli Wang, Hejing Wang
doaj   +1 more source