a.adam

Alaa Mohamed Adam

Lecturer - مدرس

Faculty of science

Address: المراغة - سوهاج

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Publications Which contain the keyword: Electrical resistivity

Enhanced electro-magnetic properties in La0.7Sr0.3MnO3/ZrO2 composites

2018-10-20 16:57:28 Keywords Colossal magnetoresistance;, Electrical resistivity, DC magnetization, A M Ahmed*, H F Mohamed, A K D,
Enhanced electro-magnetic properties in La0.7Sr0.3MnO3/ZrO2 composites
(La0.7 Sr0.3MnO3)1-x/(ZrO2)x (x=0.0–0.150, step 0.025) composites have been prepared via solid state reaction process. The X-ray diffraction and scanning electron microscopic observations indicate that there are ZrO2grains separated from La0.7Sr0.3MnO3matrix. It has been found that the inclusion of ZrO2content decreases the conductivity, magnetization and metal–semiconductor transition, whereas it increases the low field magnetoresistance. Possible effects of grain boundaries on the ... Read more

Sintering process and annealing effect on some physical properties of V2O5 thin films

2018-09-02 21:58:37 Keywords Sintering, Electrical resistivity, Thin films, V2O5,
Sintering process and annealing effect on some physical properties of V2O5 thin films
Thin films of vanadium pentoxide (V2O5) on glass substrates were produced by e-beam evaporation technique. The effect of sintering process and annealing temperature on the morphology and optoelectronic properties of these films were studied. The obtained results from scan electron microscope show that, the grain size of V2O5 films increases with increasing both the temperature of sintering and annealing temperature. ... Read more

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