نتایج جستجو برای: xrd measurements

تعداد نتایج: 391005  

2015
Omar F Farhat Mohd M Halim Mat J Abdullah Mohammed K M Ali Nageh K Allam

We report a facile synthesis of zinc oxide (ZnO) nanorod arrays using an optimized, chemical bath deposition method on glass, PET and Si substrates. The morphological and structural properties of the ZnO nanorod arrays were investigated using various techniques such as field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) measurements, which revealed the formation of d...

2004
N. SANJEEVA MURTHY

The acknowledged versatility of polymeric materials, which are widely used in the form of plastics, films, coatings and fibers, arises from the complex structural organization in these materials. X-ray diffraction (XRD) has long been successfully used to study various aspects of these structures in semicrystalline polymers, which includes thermoplastics, thermoplastic elastomers and liquid crys...

2007
D. Goberman

We report the direct deposition of epitaxial 215-nm-thick vanadium sesquioxide (V2O3) films on aand c-plane sapphire substrates from powder-pressed V2O3 targets via pulsed-laser deposition (PLD) in an evacuated deposition chamber devoid of O2. The films were characterized using x-ray diffraction (XRD), x-ray photoemission spectroscopy (XPS), x-ray absorption fine structure (XAFS) spectroscopy, ...

2016
Aminu Musa Mansor B. Ahmad Mohd Zobir Hussein Mohd Izham Saiman Hannatu Abubakar Sani

The synthesis of copper nanoparticles was carried out with gelatin as a stabilizer by reducing CuSO4.5H2O ions using hydrazine. Ascorbic acid and aqueous NaOH were also used as an antioxidant and pH controller, respectively. The effects of NaOH, hydrazine, and concentration of gelatin as stabilizer were studied. The synthesized copper nanoparticles were characterized by UV-vis spectroscopy, XRD...

2013
Ashutosh Mishra Niyati Mishra

Barium Titanate BaTiO3 is known for both its electric and magnetic properties. The synthesis and characterization of iron doped barium titanate; BaTi1-xFexO3 (x= 0.005, 0.01, 0.015) was investigated with a view to understand its structural, magnetic and electrical properties. A finest possible sample of Iron doped micro particles of BaTiO3 (BTO) with possible tetragonal structure via a solid-st...

Journal: :The Journal of chemical physics 2011
Matthew Welborn Wenjie Tang Jihoon Ryu Valeri Petkov Graeme Henkelman

The structure of 1.7 nm Pt nanoparticles is investigated using x-ray diffraction (XRD) measurements and density functional theory (DFT) calculations. Two types of particles are compared, those made by solution chemistry which are capped either by thiol or amine ligands, and dendrimer encapsulated particles (DENs) which do not have capping ligands. All particles were dried before analyzing their...

Journal: :Analytical chemistry 2009
Yvonne Dieckmann Helmut Cölfen Heinrich Hofmann Alke Petri-Fink

We performed particle size and particle size distribution measurements for L-cysteine-stabilized ZnS/Mn nanoparticles in the size region below 10 nm. For this we applied transmission electron microscopy (TEM), analytical ultracentrifugation (AUC), dynamic light scattering (DLS), and asymmetric flow field flow fractionation (aF-FFF) measurements, and we calculated particle sizes with the help of...

2015
L. Le D. W. Ming

Introduction and Background: The Mars Science Laboratory (MSL) CheMin instrument on the Curiosity rover is a transmission X-ray diffractometer (Co-K radiation source and a ~5 to ~52 2 range) where the analyzed powder samples are constrained to have discrete particle diameters <150 μm by a sieve [1]. To date, diffraction patterns have been obtained for one basaltic soil (Rocknest (RN)) and f...

Journal: :Journal of The Electrochemical Society 2021

Virtually all types of electrodes used in lithium-ion batteries expand and contract during cycling, which poses an engineering design challenge. Information provided by X-ray diffraction (XRD) about alterations the crystal structure active materials may be insufficient to inform these tasks. This is because it unclear how evolutions translate into measurable thickness changes at electrode or ce...

2013
Vimal Pandey Giridhar Mishra S. K. Verma Meher Wan R. R. Yadav

Study of nanofluids is important for different types of heat transfer management systems. Cupric oxide nanoparticles (CuO NPs) were prepared by the chemical route and different nanofluid samples of CuO NPs dispersed in PVA in different concentrations were prepared using ultrasonication. The apparatus acoustic particle sizer (APS-100) was used to make high precision measurements of the ultrasoni...

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