Results 1 to 10 of about 32,911 (288)

An insight into the thermal properties of struvite-k by Rietveld refinement method

Journal of Materials Research and Technology, 2023
This work investigated the thermal properties of struvite-k (a main binding phase and a strength-giving mineral from the magnesium potassium phosphate cements) exposed to different conditions by Rietveld Refinement Method coupled with X-ray diffraction ...
Yang Yuanquan, Zhang Guanhua, Guo Jinbo, Qi Dingwen, Liu Runqing   +4 more
doaj   +4 more sources

Analysis of Rietveld Method Application for Gyrolite Crystal Structure Refinement

Medžiagotyra, 2012
The several simulated X-ray diffraction patterns for calcium silicate hydrate – gyrolite were calculated with GSAS program using the structural model of natural mineral gyrolite and profile parameters values determined from refining crystal structure of ...
Arūnas BALTUŠNIKAS, Irena LUKOŠIŪTĖ, Rimantas LEVINSKAS, Albertas GRYBĖNAS, Kęstutis BALTAKYS, Anatolijus EISINAS   +5 more
doaj   +2 more sources

Rapid Analysis of Feldspar by X-ray Diffractometry Rietveld Refinement Method

Yankuang ceshi, 2017
The content of minerals in feldspar can be calculated by chemical analytical results, but the analytical process is long and the calculation process is complex.
RAN Jing, DU Gu, WANG feng-yu
doaj   +2 more sources

A Rietveld refinement method for angular- and wavelength-dispersive neutron time-of-flight powder diffraction data. [PDF]

J Appl Crystallogr, 2015
This paper introduces a two-dimensional extension of the well established Rietveld refinement method for modeling neutron time-of-flight powder diffraction data. The novel approach takes into account the variation of two parameters, diffraction angle 2θ and wavelength λ, to optimally adapt to the varying resolution function in diffraction experiments ...
Jacobs P, Houben A, Schweika W, Tchougréeff AL, Dronskowski R.   +4 more
europepmc   +6 more sources

Synthesis of CuO and Ce-doped CuO nanosheets; characterization, optical and magnetic properties [PDF]

Progress in Physics of Applied Materials, 2023
In this article, the structural, magnetic, and optical properties of CuO doped by cerium metal ions as a rare earth element synthesized by the hydrothermal method have been investigated.
Hasan Khaleghi
doaj   +1 more source

Refinement Struktur Kristal Superkonduktor BSCCO–2212 dengan Substitusi Pb

Jurnal Materi dan Pembelajaran Fisika, 2022
Analisis refinement struktur kristal telah dilakukan pada data XRD superkonduktor BSCCO-2212 yang disubstitusi Pb. Superkonduktor fase BSCCO-2212 disintering pada suhu 8200C dan dikalsinasi pada suhu 8000C. Waktu sintering sampel divariasi pada 0, 12, 24,
Dwi Teguh Rahardjo
doaj   +1 more source

Investigation and production of high purity lanthanum and barium hexaaluminate ceramic powders

Open 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

Co-crystal structures of furosemide:urea and carbamazepine:indomethacin determined from powder x-ray diffraction data [PDF]

, 2020
Co-crystallization is a promising approach to improving both the solubility and the dissolution rate of active pharmaceutical ingredients. Crystal structure determination from powder diffraction data plays an important role in determining co-crystal ...
Al Rahal, Okba, Majumder, Mridul, Shankland, Kenneth, Spillman, Mark J., van de Streek, Jacco   +4 more
core   +2 more sources

Investigation on the crystal structure and mechanical properties of the ternary compound Mg11-xZnxSr combined with experimental measurements and first-principles calculations

Journal of Magnesium and Alloys, 2023
A new ternary compound, Mg11-xZnxSr in the Mg-Zn-Sr system was observed and studied using Scanning Electron Microscopy (SEM), Energy-Dispersive Spectroscope (EDS), X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM).
Jian Wang, Lingzhong Meng, Zhang Zhang, Baisheng Sa, Xiaoxiao Fu, Liyuan Sheng, Daokui Xu, Yufeng Zheng   +7 more
doaj   +1 more source

Refinement of monoclinic ReO2 structure from XRD by Rietveld method [PDF]

Brazilian Journal of Physics, 2004
ReO2 presents two crystalline variants, with monoclinic and orthorhombic structures. The former is metastable and irreversibly transforms to an orthorhombic structure above 460 o C. The structure of the latter was determined from studies on monocrystalline samples, whereas for the monoclinic variant there are no single crystals available so far. It was
Corrêa, H.P.S., Cavalcante, I.P., Martinez, L.G., Orlando, C.G.P., Orlando, M.T.D.   +4 more
openaire   +3 more sources