A study on the microstructural parameters of Zn (1-x)LaxZrxO nanopowders by X-ray line broadening analysis
| Autor: | Omid Rezaee, Hossein Mahmoudi Chenari, Hadi Fallah Moafi |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Analytical chemistry chemistry.chemical_element Nanoparticle Mineralogy 02 engineering and technology Zinc 010402 general chemistry 01 natural sciences General Materials Science Materials of engineering and construction. Mechanics of materials Williamson-Hall analysis Wurtzite crystal structure Mechanical Engineering Doping 021001 nanoscience & nanotechnology Condensed Matter Physics X-ray diffraction 0104 chemical sciences Nanocrystal chemistry Mechanics of Materials Transmission electron microscopy SSP model X-ray crystallography TA401-492 ZnO TEM Crystallite 0210 nano-technology |
| Zdroj: | Materials Research, Volume: 19, Issue: 3, Pages: 548-554, Published: 08 APR 2016 Materials Research, Vol 19, Iss 3, Pp 548-554 (2016) Materials Research v.19 n.3 2016 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
| ISSN: | 1980-5373 1516-1439 |
| DOI: | 10.1590/1980-5373-mr-2016-0017 |
| Popis: | In the present study, the pure and La-Zr co-doped ZnO nanoparticles were prepared by sol–gel technique using zinc acetate dehydrate (Zn(Ac)2·2H2O), lanthanum nitrate hexahydrate (La(NO3)3 ·6H2O) and zirconium chloride (ZrCl4) as precursor. The structure and morphology of the prepared nanoparticle samples were studied using X-ray diffraction and transmission electron microscopy measurements. X-ray diffraction results indicated that all the samples have crystalline wurtzite phase. TEM showed that powder was polycrystalline in nature with random distribution of the pure and La-Zr doped ZnO nanoparticles. We demonstrate strain-size evaluations for pure and doped ZnO nanoparticles from the x-ray line profile analysis. The microstructural effects of crystalline materials in terms of crystallite sizes and lattice strain on the peak broadening were investigated using Williamson-Hall (W-H) analysis and size- strain plot (SSP) method. The average crystallite size of Zn (1-x)LaxZrxO nanoparticles estimated from the W–H analysis and SSP method varied as the doping concentration increased. The incorporation of Zr4+ ion in the place of Zn2+ caused an increase in the size of nanocrystals as compared to undoped ZnO. The average particle sizes of co-doped ZnO nanoparticles estimated from the USDM model is in good agreement with the TEM results. |
| Databáze: | OpenAIRE |
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