Results 211 to 220 of about 9,090 (254)

Analysis of Atomic Thermal Vibration of CrN Based on Rietveld Refinement Method

physica status solidi (b), 2023
The crystal structure of chromium nitride (CrN) is studied by X‐Ray diffraction from 25 to 600 °C. Based on the RIETAN‐2000 program of Rietveld refinement method, the experimental results are analyzed, and the crystal structure parameters of CrN powder crystals at different temperatures are refined. Atomic thermal vibration isotropic temperature factor
Ruigang Wang, Zepeng Liu, null Xianglian, Yong Sun, Wei Xia   +4 more
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Refinement of the crystal structure of calcioancylite-(Ce) by the Rietveld method

Crystallography Reports, 2013
The crystal structure of calcioancylite-(Ce) of the (Ca0.30Sr0.22)Σ0.52(Ce0.78La0.47Nd0.16Pr0.05Sm0.02)Σ1.48(CO3)2((OH)1.20F0.28)Σ1.48 · 1.97H2O composition from alkali hydrothermalites of Mont Saint-Hilaire, Canada, has been refined by the Rietveld method.
Yu. V. Belovitskaya, I. V. Pekov, E. R. Gobechiya, Yu. K. Kabalov   +3 more
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Preparation and Crystal Structure Refinement of Li4Mn5O12 by the Rietveld Method

Journal of Solid State Chemistry, 1995
Well-crystallized Li{sub 4}Mn{sub 5}O{sub 12} powder has been prepared by heating a eutectic mixture of lithium acetate LiOAc and manganese nitrate Mn(NO{sub 3}){sub 2} at 700{degrees}C for 1-3 days in an O{sub 2} atmosphere. The Li and Mn content in the final products was determined from atomic absorption spectroscopy. The tetravalent manganese in the
Toshimi Takada, Hiroshi Hayakawa, Etsuo Akiba   +2 more
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Refinement of the crystal structure of fornacite using the rietveld method

Doklady Earth Sciences, 2014
The crystal structure of fornacite Pb2(Cu,Fe)[CrO4(As,P)O4OH] from the Berezovskii deposit (Central Urals, Russia) was refined by X-ray powder diffraction data using the Rietveld method. Fornacite is monoclinic, space group P21/c, the unit cell dimensions are a = 8.09015(12), b = 5.90913(9), c = 17.4839(2) A, β = 109.99(2), V = 785.5(3) A3, and Z = 4 ...
D. A. Ksenofontov, Yu. K. Kabalov, I. V. Pekov, N. V. Zubkova, I. A. Ekimenkova, D. Yu. Pushcharovskii   +5 more
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The structure of poly(D-(-)-.beta.-hydroxybutyrate). A refinement based on the Rietveld method

Macromolecules, 1988
The crystal structure of optically active microbial poly(D(-)-beta-hydroxybutyrate) has been refined with the Rietveld whole-fitting method applied to powder X-ray diffraction data. This natually occurring polymer gives rise to a very crystalline phase and therefore to very detailed and resolved powder profiles.
BRUCKNER S., MEILLE, STEFANO VALDO, MALPEZZI, LUCIANA, CESARO A., NAVARINI R., TOMBOLINI R.   +5 more
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Quantitative phase analysis of Mg:ZrO2 nanoparticles by Rietveld refinement method

AIP Conference Proceedings, 2014
To quantify the structural phases of nanocrystalline ZrO2 doped with Mg ions of varying concentrations (3, 5, 10, 15 and 20%) and annealed at different temperatures. Magnesia doped zirconia was prepared by chemical co-precipitation method and annealed up to 1000°C.
V. Balaji, S. Senthilkumaran, P. Thangadurai   +2 more
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ChemInform Abstract: Refinement of the CsYP2O7 Crystal Structure by the Rietveld Method.

ChemInform, 1994
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A. AKRIM, D. ZAMBON, J. METIN, J.‐C. COUSSEINS   +3 more
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Refinement of the structure of hydrogen–vacancy complexes in titanium by the Rietveld method

Physics of the Solid State, 2016
The VT1-0 titanium alloy (phase α-Ti) with various hydrogen and hydrogen-vacancy concentrations has been studied. The stability of the 32-atom Ti–nV–mH supercell (n is the number of the V vacancies, and m is the number of hydrogen atoms H) with varying numbers of vacancies and hydrogen atoms has been calculated from the first principles. The structural
Yu. A. Abzaev, A. M. Lider, V. A. Klimenov, R. S. Laptev, Yu. S. Bordulev, G. D. Sadritdinova, M. A. Zakharova, A. A. Mikhailov   +7 more
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Application of the Rietveld Method for Structure Refinement with Powder Diffraction Data

Advances in X-ray Analysis, 1980
The object of the Rietveld method is to produce refined values of crystal structural parameters from powder diffraction data. Many materials of great interest can not be made available for study in single crystal form. This may be because it is not possible to prepare a single-crystal form at all (e.g., human tooth enamel) or because the single-crystal
R. A. Young, D. B. Wiles
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Crystal structure refinement of Bi1−xNdxFeO3 multiferroic by the Rietveld method

Ceramics International, 2012
Abstract The effect of Nd doping on Bi 1− x Nd x FeO 3 ( x =  0.0, 0.175, 0.20) multiferroics synthesized by chemical co-precipitation method has been investigated by Rietveld analysis of X-ray powder diffraction (XRD) data. The formations of the single-phase compounds were confirmed by XRD.
Ashwini Kumar, Dinesh Varshney
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