نتایج جستجو برای: crystallite refinement
تعداد نتایج: 35490 فیلتر نتایج به سال:
Received 10 April 2015 Accepted 11 October 2015 Available online 30 September 2015 In this work, structural and magnetic properties of the LaMnO3+δ compound prepared by citrate precursor method and annealed in the presence of oxygen are investigated. The structural characterization of LaMnO3+δ by X-ray powder diffraction and X‟pert package and Fullprof program provides evidence for a rhombohedr...
In this paper, the production of Al2O3-Mo nano-composites via mechanical milling was investigated. Molybdenum and alumina powders with certain ratios were grounded in a planetary ball mill at different times. XRD technique was used to determine the crystallite size of the milled powders. The microstructure of milled powders was studied using optical and electron microscopes. The crystallite siz...
Abstract Herein, we report, for the first time, influence of state spin Cr 3+ ions on structure and magnetic behavior LaFe 1−x x O 3 (0.0 < 0.5) perovskite crystal structures to improve their properties memory storage magneto-optical application potential. A series nanocrystals was prepared using citrate-nitrate auto-combustion route. The morphology nanostructures emphasized X-ray diffractio...
this paper concerns the transmission of two independent gaussian sources over a two-user decentralized interference channel, assuming that the transmitters are unaware of the instantaneous csis. the availability of the channel state information at receivers (csir) is considered in two scenarios of perfect and imperfect csir. in the imperfect csir case, we consider a more practical assumption of...
Abstract In this work, structural parameters of lanthanum cobaltites doped with cerium atomic concentration 1%, 3%, and 5 %, synthesized using the sol-gel method considering calcination temperature 900 °C, were estimated from modeling X-ray diffraction patterns samples. Modeling experimental is carried out Rietveld refinement implemented Fullprof-Suite program. Estimation crystallite sizes obta...
This research work aims to investigate the mechanical alloying of Fe15Co2P3 powder mixture in terms phases’ formation, microstructural parameters, and magnetic properties as function milling time. Parametric Rietveld refinement method, obtained X-ray patterns, was performed for qualitative quantitative phase analysis alongside determination structural, microstructural, properties. The ball-mill...
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