42 Result(s)
within
K. Khirouni
Characterization and Evaluation of Materials
Optical and Electronic Materials
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Article
Effect of substituting manganese by few cobalt content in the transport properties of Pr/Ca based manganite
A solid-state reaction technique was employed to elaborate Pr0.7Ca0.3Mn 0.98Co 0.02O3 (Co-PCMO) ceramic. Electrical investigations have been conducted to comprehend the dynamic of charge carriers in the elaborate...
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Article
Impact of Bi do** on the structure and physical properties of LaCrO3-based perovskite
Lanthanum-based chromite materials have become increasingly attractive for numerous types of research due to their many features. To enhance their properties, they are usually doped with divalent ions and rare...
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Article
Admittance spectroscopy investigation of Pr0.65Ca0.25Sr0.1MnO3 system
Structural and transport properties of Pr0.65Ca0.25Sr0.1MnO3 ceramic have been reported. A solid-state reaction method was used to elaborate the studied sample. X-ray diffraction analysis authenticates the orthor...
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Article
Nanoparticles size effect on transport properties of doped manganite elaborated by sol–gel route
In the present work, Sr-doped lanthanum manganite is successfully synthesized using sol–gel route. Obtained compounds are annealed at 600 and 800 °C in the aim to modify the nanoparticles size. Structural, mor...
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Article
Synthesis, structural and electrical properties of two congruent isotypic diphosphates: Li2Na2P2O7 and Li3NaP2O7
The mixed alkali-diphosphate materials are among the widely used commercial materials due to their outstanding physical properties. The Li2Na2P2O7 (LNOP1) and Li3NaP2O7 (LNOP2) compounds have been synthetized by ...
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Article
Improving the physical properties of polycrystalline-deficient Pr0.8Sr0.2−x□xMnO3 (0 ≤ x ≤ 0.2) compounds for electronic devices
Deficient strontium effects upon structural and spectroscopic properties of Pr0.8Sr0.2MnO3 have been investigated. Pr0.8Sr0.2−x□xMnO3 (0 ≤ x ≤ 0.2) powder samples have been elaborated by the conventional ceramic ...
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Article
Improving the optical, electrical and dielectric characteristics of ZnO nanoparticles through (Fe + Al) addition for optoelectronic applications
In the present study, undoped ZnO and co-doped Zn(0.99 − x)Fe0.01AlxO (x = 0.01, 0.03 and 0.05) were effectively prepared by the co-precipitation process. The structural, morphological, optical and electrical pro...
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Article
Analysis of the electrical transport, conductivity, and dielectric relaxation behavior of La0.75 Ba0.10 Sr0.15 Fe O2.875-δ (δ = 0.375 and 0.50) brownmillerite oxides
The topotactic reduction of La0.75Ba0.10Sr0.15FeO2.875 with titanium metal leads to a new isostructural material of the composition La0.75Ba0.10Sr0.15FeO2.875-δ (δ = 0.375 and 0.50). XRD analysis of phases confir...
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Article
Study on the ionic conductivity, dielectric, and optical properties of CsYP2O7compound
The CsYP2O7 compound was synthesized by the classical "solid-state" reaction. The phase identification of the obtained samples was performed by X-ray diffraction proving their crystallization in the monoclinic st...
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Article
Transport properties and dielectric response of Pr0.8Na0.2-xKxMnO3 (x = 0, 0.05, 0.1, 0.15 and 0.2) ceramics synthesized by sol–gel method
The effect of substituting sodium by potassium on electrical and dielectric properties is investigated in details for the GdFeO3-type Pr0.8Na0.2-xKxMnO3 (x = 0.00, 0.05, 0.1, 0.15 and 0.2) manganites. The electri...
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Article
Synthesis and investigation of oxygen deficiency effect on electric properties of La0.75Ba0.10Sr0.15FeO2.875-δ (δ = 0.00, 0.125 and 0.25) ferrites
In the present investigation, La0.75Ba0.10Sr0.15FeO2.875-δ oxygen-deficient ferrites with δ = 0.00, 0.125 and 0.25 were synthesized by sol–gel method. The physical characterization has been carried out by X-ray d...
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Article
Enhancing the electrical and dielectric properties of ZnO nanoparticles through Fe do** for electric storage applications
The present paper provides significant results about the impact of iron do** on the ZnO nanoparticles’ structural and electrical properties. Fe-doped ZnO (ZnO:Fe) nanoparticles with varying do** concentra...
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Article
Magnetic properties and impedance spectroscopic analysis in Pr0.7Ca0.3Mn0.95Fe0.05O3 perovskite ceramic
The orthorhombic Pr0.7Ca0.3Mn0.95Fe0.05O3 manganite is subject to magnetic and impedance spectroscopy measurements. This sample shows a paramagnetic to ferromagnetic phase transition at about 90 K. According to t...
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Article
Study of electrical properties of (Pr/Ca/Pb)MnO3 ceramic
Characterization of the electrical properties of Pr0.65Ca0.25Pb0.1MnO3 ceramic, prepared by the solid-state method, is conducted using the impedance spectroscopy technique. Ac-conductivity measurements reveal the...
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Article
Role of indium do** on structural and electrical properties of ZnO nanoparticles prepared by sol–gel method
In this work, we report the synthesis of undoped ZnO and In-doped ZnO nanoparticles by sol–gel method from 0 to 5 wt% of In amount. The effect of indium incorporation on structural and electrical properties of...
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Article
Thermal, Electrical and Dielectric Characteristics of SnSbS Thin Films for Solar Cell Applications
Sn3Sb2S6 thin films were elaborated by a vacuum evaporation process, and then they were annealed at 150°C in air for 1 (h). X-ray diffraction results reveal that only the annealed sulfosalt film exhibits a crysta...
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Article
Investigation of electrical properties and conduction mechanism using CBH model of Ba0.97La0.02Ti1−xNb4x/5O3 (x = 0.00 and 0.02) compounds
Lead-free Ba0.97La0.02Ti1−xNb4x/5O3 (abbreviated as BLT and BLT0.98Nb0.016) ceramics were grown using the molten-salt method with filtration as well as evaporation technique. A correlation investigation between t...
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Article
Barium deficiency and sintering temperature effects on structural and transport properties of La0.5Eu0.2Ba0.3−x□xMnO3 manganites
La0.5Eu0.2Ba0.3−x□xMnO3 (x = 0.00, 0.05 and 0.15) samples were prepared using sol–gel method and annealed at Ts = 750 and 950 °C. The X-ray diffraction technique shows that all samples crystallize in the rhombohe...
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Article
Structural, AC conductivity, conduction mechanism and dielectric properties of La0.62Eu0.05Ba0.33Mn0.85Fe0.15O3 ceramic compound
The new perovskite compound La0.62Eu0.05Ba0.33Mn0.85Fe0.15O3 was successfully synthesized via the sol–gel process. X-ray diffraction revealed that our sample is pure and crystallizes in the orthorhombic structure...
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Article
Effect of Seed Layer and Thermal Annealing on Structural and Optical Properties of Silicon Layers Deposited by PECVD
Hydrogenated silicon (Si:H) layers have been deposited on crystalline silicon substrate by radiofrequency plasma-enhanced chemical vapor deposition technique (rf-PECVD) from SiH4/H2 gas mixture using different de...
