نتایج جستجو برای: XRD patterns

تعداد نتایج: 435420  

Journal: :international journal of nano dimension 0
a. tehranchi department of mathematics, islamic azad university, south tehran branch, tehran. m. khalifeh department of mathematics, islamic azad university, south tehran branch, tehran. k. negahban dehcheshmeh islamic azad university, central tehran branch, tehran.

ag/tio2 photocatalytic nanoparticles by two methods, the sol – gel using a reducing agent and spattering was produced. crystalline phase of titanium dioxide was investigated in both. ag/tio2 peak in the sol – gel method at temperatures of 300,500 and 6000c were studied. ag/tio2 peak at different temperatures were determined using the spattering. xrd patterns of calcined this is tio2 and ag/ tio2.

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2010

Journal: :Advanced theory and simulations 2022

It would be a natural expectation that only major peaks, not all of them, make an important contribution to the characterization XRD pattern. We developed scheme can identify which peaks are relavant what extent by using auto-encoder technique construct feature space for peak patterns. Individual patterns projected onto single point in two-dimensional constructed method. If is significantly shi...

2017
Woon Bae Park Jiyong Chung Jaeyoung Jung Keemin Sohn Satendra Pal Singh Myoungho Pyo Namsoo Shin Kee-Sun Sohn

A deep machine-learning technique based on a convolutional neural network (CNN) is introduced. It has been used for the classification of powder X-ray diffraction (XRD) patterns in terms of crystal system, extinction group and space group. About 150 000 powder XRD patterns were collected and used as input for the CNN with no handcrafted engineering involved, and thereby an appropriate CNN archi...

2009
Dodd Gray Adam McCaughan Bhaskar Mookerji

We analyze graphene and some of the carbon allotropes for which graphene sheets form the basis. The real-space and reciprocal crystalline structures are analyzed. Theoretical X-ray diffraction (XRD) patterns are obtained from this analysis and compared with experimental results. We show that staggered two-dimensional hexagonal lattices of graphite have XRD patterns that differ significantly fro...

2009
Kheamrutai Thamaphat Pichet Limsuwan

In this study, the commercial TiO2 nanopowder and micropowder of anatase phase and rutile phase have been characterized by x-ray diffraction (XRD) and transmission electron microscopy (TEM). XRD patterns of nano-TiO2 in rutile and anatase phases exhibit broad peaks whereas both phases of micro-TiO2 demonstrate very sharp peaks. TEM images show that the grain size of TiO2 micropowders and TiO2 n...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

سپهوند, فاطمه , متولی زاده, لیلی ,

SnO2 nanoparticles have been synthesized via sol-gel method in different annealing temperatures. TEM, FESEM and XRD techniques have been used to investigate the structure and morphology of SnO2 nanoparticles. The XRD pattern analysis shows all samples are single phase. XRD patterns show as the annealing temperature increases, the peaks become sharper which is related to the increase in the crys...

2018
Hongjia Zhang Tan Sui Enrico Salvati Dominik Daisenberger Alexander J G Lunt Kai Soon Fong Xu Song Alexander M Korsunsky

High energy 2D X-ray powder diffraction experiments are widely used for lattice strain measurement. The 2D to 1D conversion of diffraction patterns is a necessary step used to prepare the data for full pattern refinement, but is inefficient when only peak centre position information is required for lattice strain evaluation. The multi-step conversion process is likely to lead to increased error...

2014
N Surajkumar Singh S Dorendrajit Singh

Undoped Zinc oxide (ZnO) nanoparticles as well as ZnO nanoparticles doped with Magnesium (Mg) were synthesized by wet chemical precipitation method using Zinc acetate and Magnesium acetate in Ethylene glycol and distilled water medium. The prepared nanoparticles were characterized with X-ray diffraction (XRD). The XRD patterns show the pattern of typical ZnO nanoparticles and correspond with st...

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