نتایج جستجو برای: lead titanate nanopowders
تعداد نتایج: 342801 فیلتر نتایج به سال:
In this work, Mn ferrite nanopowders were prepared by co-precipitation method and were characterized. Phase identification of the nanopowders was performed by X-ray diffraction method and the mean particle size of the nanopowders was calculated by Scherrer's formula, using necessary corrections. Magnetic parameters of the prepared nanopowders were measured by a vibrating sample magnetome...
The blueshift of near-band-edge emission and excitonic absorption indicate that Zn(2+) ions are successfully substituted by Mg(2+) ions in Mg(x)Zn(1-x)O nanopowders for 0≤x≤0.14. The changes in Raman spectral linewidth and the asymmetry of the E(2) (high) mode for various Mg contents can be well described by a modified spatial correlation model that considers the grain size distribution. With i...
A comparing study on formation and microstructure features of aluminum titanate is investigated through both solid-state and sol-gel processes. Aluminum titanate formed by firing at 1350ºC and 1450ºC for 4h in solid-state process. In the sol-gel process formation of submicron sized particles is followed by addition of sucrose into the transparent sol. XRD analysis was confirmed the formation of...
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