Poster Microstructural Properties of ZnO Powder Nanostructures Prepared by Mechanical Alloying
Introduction: The wide bandgap semiconductors (ZnO) have been studied for several years in a highly competitive internationalenvironment given their wide range of applications. In our work we prepared powder nanoparticles mechanically alloyed .Experimental/Theoretical Study: ZnO powder nanoparticles mechanically alloyed were doped with iron to investigatetheir structural and microstructural properties using X-ray diffraction (XRD) , scaning electron microscopy (SEM) [1,2] anddifferential scanning calorimetry ( DSC ) for examined pur ZnO and 5% Fe doped ZnO.Results And Discussion: The ZnO starting pure powder exhibited a hexagonal crystal structure with space group p63mcof ZnO, however with the introduction of 5%Fe in the ZnO milled powder, the hexagonal ZnO phase remained unchanged,whereas the microstructural parameters were subject to significant variations due to the introduction of Fe atoms into the ZnOhexagonal matrix to replace oxygen ones . The size of crystallites and microstrains are found milling time dependent.Conclusion: This product exhibited a hexagonal crystal structure with space group p63mc of ZnO and with c-axis preferentialorientation, however with the introduction of 5 % Fe in the ZnO milled powder, the hexagonal ZnO phase remainedunchanged,whereas the microstructural properties were subject to significant variations due to the introduction of Fe atomsinto the ZnO hexagonal matrix to replace oxygen ones.
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