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Study of the electrical properties and the microstructure of ZnO with different additives / Mai Mohamed Younis Abdelrahman Elnasser ; Supervised Mohamed Mounir Saad Eldin , Gamal Abdelnaser Madboly , Mohamed Hamdy Othman

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Mai Mohamed Younis Abdelrahman Elnasser , 2016Description: 152 P. : facsimiles ; 25cmOther title:
  • دراسة الخواص الكهربائية و التركيب النسيجى لمركبات أكسيد الزنك مع الشوائب المختلفة [Added title page title]
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Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics Summary: Mixtures of ZnO doped with CuO, Cr₂O₃, Na₃Bi₂O₃ and NiO as additive were prepared by solid state reaction from the calcined oxides with the following proportions CuO(0.5, 1, 2, 4 and 6 mol%), Cr₂O₃ (0.5 mol%), Na₃Bi₂O₃(0. 5 mol%) and NiO (0.5 mol%). SEM and AFM revealed the presence of inter-granular phase. Additives present in grain boundaries between ZnO grains.XRD showed that no binary compound was formed. The conductivity and the dielectric constant are highly dependent on the microstructure of conducting grains surrounded by this insulating oxide barrier, and the observed non-linearity was ascribed to the corresponding potential barrier formed at the interface. The I-V characteristics show non- ohmic behavior and non-linearity
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.20.Ph.D.2016.Ma.S (Browse shelf(Opens below)) Not for loan 01010110071149000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.20.Ph.D.2016.Ma.S (Browse shelf(Opens below)) 71149.CD Not for loan 01020110071149000

Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics

Mixtures of ZnO doped with CuO, Cr₂O₃, Na₃Bi₂O₃ and NiO as additive were prepared by solid state reaction from the calcined oxides with the following proportions CuO(0.5, 1, 2, 4 and 6 mol%), Cr₂O₃ (0.5 mol%), Na₃Bi₂O₃(0. 5 mol%) and NiO (0.5 mol%). SEM and AFM revealed the presence of inter-granular phase. Additives present in grain boundaries between ZnO grains.XRD showed that no binary compound was formed. The conductivity and the dielectric constant are highly dependent on the microstructure of conducting grains surrounded by this insulating oxide barrier, and the observed non-linearity was ascribed to the corresponding potential barrier formed at the interface. The I-V characteristics show non- ohmic behavior and non-linearity

Issued also as CD

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