Saudi Universities Theses & Dissertations
Permanent URI for this communityhttps://drepo.sdl.edu.sa/handle/20.500.14154/11
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Item Restricted Elaboration and characterization of rare earth doped zinc oxide for optoelectronic applications(Imam Abdulrahman Bin Faisal University, 2022) Al-Thumairi, Nouf Ahmed Abdelmohsen; الفوزري، عفيف13 0Item Restricted Utilization of Laser Induced Breakdown Spectroscopy technique for Elemental Analysis of Biological Samples(Imam Abdulrahman Bin Faisal University, 2022) Al-Dakheel, Reem Khalid Sulaiman; المصيريعي، منيرة عبدالله0 0Item Restricted Impact of nano-𝑫𝒚𝟐𝑶𝟑 particles on the structure, superconducting and flux pinning properties of 𝒀𝑩𝒂𝟐𝑪𝒖𝟑𝑶𝟕−𝜹 polycrystalline(Imam Abdulrahman Bin Faisal University, 2022) Algarni, Rahmah Ali Abdallah; بن قدور، فاتن عزوز; المصيرعي، منيرة عبد الله2 0Item Restricted Simulation of Holes Transport in Heterostructures based on Magnetic Semiconductors GaAs/GaMnAs Multi-Barriers(Imam Abdulrahman Bin Faisal University, 2022) Al-Shameri, Najla Salim Al-Masudi; الدخلاوي، حسن بشير6 0Item Restricted Enhanced magnetic and structural properties of functional hard/soft ferrite nanocomposites for microwave application(Imam Abdulrahman Bin Faisal University, 2022) Algarou, Norah Abdullah; المصيرعي، منيرة عبداللهHard/soft ferrites nanocomposites are a new intelligent generation of magnetic materials that hold great potential in various applications particularly microwave applications owing many unique properties such as high microwave absorption ability. The integration between the hexaferrite (hard) (H) (MFe12O19, M= Sr, Ba, and Pb) and the spinel ferrite (soft) (S) (MFe2O4, M= Ni, Co, Zn, or other elements ) are tuned the magnetic properties by combining a high magnetic saturation (Ms) property related to the soft part with a high magnetic coercivity (Hc) property related to the hard part. This combination will generate the exchange-coupling behavior that included two main interactions, which are the exchange and dipolar. These two interactions have been fundamentally playing an important role in forming the magnetic characteristics in H/S ferrites nanocomposites. The thesis objective is to establish various sets of novel hard/soft ferrite nanocomposites (NCs) {SrTb0.01Tm0.01Fe11.98O19/AFe2O4 (A= Co, Ni, Zn, Cu and Mn); SrTb0.01Tm0.01Fe11.98O19/(CoFe2O4)x (0.00 ≤ x ≤ 0.03); SrFe12O19/x(CoTm0.01Tb0.01Fe1.98O4) (1.0 ≤ x ≤ 3.0); SrNi0.02Zr0.02Fe11.96O19/MFe2O4 (M= Mn, Co, Cu, and Zn); SrNi0.02Zr0.02Fe11.96O19/(CoFe2O4)x (1.0 ≤ x ≤ 3.0); Sr0.5Ba0.5ScxFe12-xO19 /NiFe2O4 (x ≤ 0.035); and SrInxFe12-xO19/Ni0.5Zn0.5Fe2O4 (0.00 ≤ x ≤ 0.04)} by using “one-pot” sol-gel auto-combustion process and investigate their structural, magnetic, and microwave properties for the potential of using them as microwave absorbers. Moreover, the effect of substitution the transition metals (Ni2+, Zr4+, Sc3+, and In3+) and rare earth elements (Tb3+and Tm3+) on the structure of hard/soft ferrite, the changing of spinel ferrite type, and the increasing of soft phase amount; into the characteristics of prepared nanocomposites were studied.0 0Item Restricted Establishment Institutional Diagnostic Reference Levels for Digital Mammography at King Fahad University Hospital in Al-Khobar(Imam Abdulrahman Bin Faisal University, 2022) Abdullah, Marwa Saleh; Abu Mhareb, Mohammad; Alqahtani, Mona Yahya3 0Item Restricted Study of resonant Tunneling, Structural, optical, and electrical properties of AlGaAs/GaAs and ZnO/Zn(1-x)MgxO heterostructures for optoelectrical applications(Imam Abdulrahman Bin Faisal University, 2020) Alamroo, Nabilah Ali; الدخلاوي، حسن البشير; غريب، الطاهر حسين0 0Item Restricted Experimental and Theoretical Investigation of Double Perovskite Ba2TiMoO6 for Energy Harvesting Applications(Imam Abdulrahman Bin Faisal University, 2021) Al-Otaibi, Athaa; Ghrib, Taher3 0Item Restricted Commissioning of Two On-Board Cone Beam Computed Tomography with TrueBeam linear accelerators to apply adaptive radiotherapy for Clinical Use(Imam Abdulrahman Bin Faisal University, 2020) Alahmadi, Reem Abdullah; عاشق، محمد جل بهار; راشد، ياسر اسعد محمد3 0Item Restricted Physical Properties of Nanofluids Synthesized by Laser Ablation(Imam Abdulrahman Bin Faisal University, 2021) Alkhabbaz, Hassan Ali A; حامدي، رضا محمد; فلمبان، تهاني بنت حسن7 0