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149 articles for “Crystals and Sizes”
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Simulation of Current Density of Oxide Layer Materials & Synthesis, Characterization of Nano Lanthanum Aluminate and Its Dielectric Analysis
Abstract: The complementary metal-oxide semiconductor (CMOS) technology is in an urge requirement of high dielectric material especially at nano level scaling to avoid quantum mechanical tunnelling and leakage current. Hence to optimize the device performance and to compare the conventional SiO2 oxide material with the selected novel high K material (LaAlO3), the SiO2 and LaAlO3 materials are atomically built in the Virtual Nano Lab – Quantum Wise version 12.8.0 software and …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 17, Issue 2, 2015 · pp. 10–14 Read article
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Synthesis of Nanocrystalline Bismuth Ferrite by Solution Combustion Synthesis Method
Abstract: Normal 0 false false false EN-US X-NONE X-NONE The present paper describes a simple method of nanosized BiFeO3 by the solution combustion synthesis using bismuth and iron nitrates as oxidizers and the combination fuel of citric acid and ammonium nitrate, with fuel to oxidizer ratio (Ψ = 1) one. The average crystallite size of BiFeO3 nanoparticles was estimated from the full width half maximum of the X-ray diffraction peaks of …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 1, Issue 2, 2011 · pp. 52–58 Read article
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Solution Combustion Synthesis of Nanocrystalline and High-K Dielectric Lanthanum Oxide
Abstract: Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 The present paper describes a simple and eco-friendly chemical method of lanthanum oxide or lanthania (La2O3) nanoparticles by the solution combustion synthesis based on urea. The fuel urea is varied for different fuel to oxidizer ratios (F/O) or Ψ = 0.5 to 1.5 in the steps of 0.25. The average crystallite size of La2O3 nanoparticles was estimated from the full width …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 1, Issue 3, 2011 · pp. 1–7 Read article
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Study on CdS Nanoparticles and Nanocrystalline Thin Films Synthesized by Chemical Bath Deposition Technique
Abstract: Normal 0 false false false EN-US X-NONE X-NONE Cadmium Sulfide (CdS) nanoparticles and nanocrystalline thin films were synthesized by chemical bath deposition technique at room temperature. The elemental composition of the as-grown CdS nanoparticles and nanocrystalline thin films were determined by energy dispersive analysis of X-rays (EDAX). Crystallite size and lattice parameter were determined from X-ray diffractogram whereas transmission electron microscopy (TEM) image gave particle size and the selected area …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 1, Issue 3, 2011 · pp. 8–15 Read article
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Combustion Synthesis of NiO-YSZ Precursor Nanocomposites for SOFC Anode and Its Characterization
Abstract: In the present work, the mixture of Nickel Oxide-Yttria Stabilized Zirconia (NiO-YSZ) composites of composition, mNiO–(1–m) Zr0⋅9Y0⋅1 O1⋅95 (m = 0⋅4), anode materials was synthesized by combustion process using glycine as fuel and nitrate as oxidizer. The study of prepared nanocomposites has been done by Fourier transform infrared spectroscopy (FTIR), differential thermal analysis-thermo gravimetric analysis (DTA-TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) to determine the powder properties. The …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 2, Issue 3, 2012 · pp. 1–9 Read article
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Electrical Properties of Nanocrystalline CuxO Thin Films Prepared by r. f. Sputtering Method
Abstract: Normal 0 Nanocrystalline CuxO (0 < x < 1) thin films have been synthesized using r. f. sputtering method at different r. f. power in an atmosphere of O2 and Ar. The effect of varying r. f. power, oxygen partial pressure and film thickness during deposition on the crystal size and electrical properties of CuxO thin films have been studied. The films were characterized by X-ray diffraction (XRD), transmission electron …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 3, Issue 2, 2013 · pp. 30–37 Read article
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Synthesis and Characterization of Co-Doped ZnO Nanoparticles by Electrochemical Method: Photodegradation Kinetics of Bromophenol Blue Dye, Textile Effluent and Study of Antibacterial Activity
Abstract: ZnO nanoparticles doped with cobalt were synthesized by electrochemical method. The crystal structure and surface morphology were characterized by X-Ray diffraction and Scanning electron microscopy. The optical properties were studied by UV-Vis spectroscopy and from this the band gap energy was found to be 3.17 eV. The XRD data revealed that the crystalline size to be ~21.23 nm. The functional group test was done by FTIR-spectroscopy. SEM results showed the …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 1, 2015 · pp. 1–13 Read article
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Influence of Dip Cycles on the Structural, Optical and Morphological Properties of CdS-SILAR Deposited Thin Films
Abstract: Cadmium sulphide (CdS) thin films were deposited on a glass substrate by a relatively simple and cost effective successive ionic layer adsorption and reaction (SILAR) method at temperature 80ºC at different deposition cycles. For a fine nanocrystalline thin film growth, the parameters include concentrations of cationic and ionic precursors, number of immersion cycles, and the immersion time. A study was made to know how dip cycles affects the structural, surface …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 3, 2016 · pp. 19–26 Read article
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Characterization of Pure and Ag Doped ZnO Nanostructure and Study the Effect of Calcination Temperature on Bacterial Growth of Ag Doped ZnO Nanostructure.
Abstract: Sol-Gel chemical precipitation method has been implemented to synthesize Ag doped ZnO nanoparticles at 50°C. Wurtzite hexagonal crystal structure of pure and ZnO(Ag) nanoparticles have been confirmed by X-ray Diffraction (XRD) data. The crystalline size and have been estimated using XRD data. The chemical composition of pure and Ag doped ZnO nanoparticles has been investigated by analysis of Fourier transform infrared (FTIR) spectroscopy. The direct band gap of nanoparticles has …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 2, 2018 · pp. 31–38 Read article
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Morphological Studies of ZrO2 Prepared by Thermal Evaporation Technique
Abstract: Zirconium is the rare earth element used as superconductive element at low temperatures. It is extensively used for the chemical industry to protect corrosion alkalis and seawater. It is naturally acting as an insulator; it is very much helpful to the optoelectronic devices when it is used as oxides. ZrO2 is synthesized by using combustion synthesis, the as-prepared samples were pelletized, and this pellet was used in the thermal evaporation …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 49–57 Read article
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Synthesis and Characterization of CeO2-ZrO2 Nanocomposites
Abstract: CeO2-ZrO2 nanocomposites were prepared by hydrothermal method and characterized by using XRD (X-ray diffractometer) to study the structural analysis of the prepared nanocomposites. The as-prepared samples were further annealed at 150º C and 300º C. From the structural studies crystal size and lattice parameter was calculated. FTIR analysis confirms the results of vibrational spectra and XPS, EDAX analysis confirms the elements presents in the composites. Effect of annealing in frequency …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 21–32 Read article
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Studies on the preparation and characterization of TiO2 thin film
Abstract: Titanium dioxide thin film was deposited on the class substrate by using Ti(C10H14O5), and characterized by using X-Ray diffractometer (XRD) and scanning electron microscopy (SEM), SEM analysis was discussed for 350º C. FTIR analysis gives the vibrational modes of vibrations of the material. The diffraction plane is (101) and crystal size was as 50 nm. The morphological studies of the sample inferred that the size was nearly in micrometer due …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 58–64 Read article
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Investigation of Structural and Magnetic Properties of Gadolinium Substituted in Nickel – Cobalt Nano ferrite by Chemical Route
Abstract: Ni0.5Co0.5GdyFe2-y O4 nanoparticles were successfully synthesized via chemical route. The Gadolinium (Gd3+) doped in Nickel (Ni) cobalt (Co) Nano Ferrite at various compositions such as Ni0.5Co0.5GdyFe2-y O4 (where y=0.025, 0.050, 0.075, 0.1, 0.125, 0.150) were synthesized by a simple cost-effective method involving sol-gel auto combustion process. Synthesized samples were sintered at 6000C temperature. The structural and magnetic properties of synthesized Gd3+ doped Nickel-Cobalt Nano Ferrite was investigated and presented in …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 1, 2019 · pp. 21–26 Read article
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Modified Solution Combustion Approach for Probing of Structural and Dielectric Properties of Sm3+ Doped GdAlO3 Nanoparticles
Abstract: A modified solution combustion approach was used in the preparation of nanosized Gd1xSmxAlO3 (x=1, 3, 5, 7, 9 mol%) using mixture of ODH and novel fuel E. tirucalli plant latex as fuels with corresponding metal nitrates. The structural morphology of synthesized and calcined powders are revealed using various analytical techniques such as Powder X-ray diffraction (PXRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 1, 2020 · pp. 16–25 Read article
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Analytical Study on Humidity Sensing of Nanostructured Tin Oxide
Abstract: Nanocrystalline tin oxide powder was prepared by a mechanochemical method. The synthesised powder was characterised using X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD shows the crystalline nature of the synthesised material. The crystallite size was estimated using Debye–Scherrer equation and its minimum value was 9 nm. Surface morphologies of the sensing pellets were investigated using SEM. Pellets as well as thick films were used as sensing elements for …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 3, 2020 · pp. 1–7 Read article
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Excitation of Intra-4f Shell Luminescence of Cerium Ions by the Energy Transfer from Zn Nanocrystals
Abstract: Rare earth ion induced ZnO has improved electrical and optical properties that can find application in electronic and optoelectronic devices. When it is synthesised in nano regime the properties become much more useful for light emitting diodes and laser diodes. Here, stoichiometric CeO2:ZnO composite nanosized powder is synthesized by combustion method. XRD results reveal the formation of CeO2:ZnO composite nanopowders. Diffuse reflectance spectra reveal that there is an increment in …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 19, Issue 3, 2017 · pp. 32–42 Read article
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Dielectric Studies of ZrO2 Semiconducting Oxide Materials and its Characterization
Abstract: Zirconium oxide powder was prepared by using the combustion method. Solution combustion synthesis was adopted to prepare the powder, urea and glycine act as fuels. The crystal size values were calculated its nearly equal to 74 nm. Naturally, bulk zirconium is the insulator, the reduction of size in nano will behave as a conductor, and its electrical and dielectric properties were reported here. The electric modulus M* is defined in …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 20, Issue 2, 2018 · pp. 26–35 Read article
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Synthesis and Characterization of NiFe2O4 Nanoparticles and Environmental Remediation
Abstract: In the present study, nickel ferrite nanoparticles (NFNPs) doped with copper was synthesized by chemical co-precipitation method (CBD) and characterized for phase composition and magnetic properties by x-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The results confirmed the formation of Ni0.5Cu0.5Fe2O4 with the average crystallite size (D) 15.45 nm and 18.14 nm and saturation magnetization (Ms) were observed as 16.16 Gauss and 22.58 Gauss at 300˚C and 500˚C temperature …
Published in Research & Reviews : Journal of Physics · Vol. 8, Issue 2, 2019 · pp. 108–111 Read article
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Growth, Optical, Mechanical and Electrical Properties of Zinc Sulphate Admixtured N-N’-dimethylurea Single Crystals (DMUZS)
Abstract: AbstractThe single crystals of zinc sulphate admixtured N-N’-dimethylurea (DMUZS) were grown by slow evaporation technique from aqueous solution at room temperature. Good quality crystals of size 16×12×5 mm3 had been obtained after 35 days. The grown crystals were characterized by single crystal XRD analysis to determine the lattice constant of the sample. Powder X-ray diffraction studies confirm the crystalline nature of the grown crystal. Fourier transform infrared (FT-IR) studies were …
Published in Research & Reviews : Journal of Physics · Vol. 7, Issue 1, 2018 · pp. 24–33 Read article
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Edge-detecting Technique to Increase Slew Rate for Differential Amplifier
Abstract: This paper addresses a very compact low-power class-B buffer amplifier topology for large-size liquid crystal display applications. With enhanced slew rate, Edge-Detecting technique the proposed buffer achieves high-speed driving performance, draws a small quiescent current during static operation. The proposed SRE design is achieved more than 68 times improvements in the slew rate without significant increase of static power dissipation. Post-layout simulations show that the proposed buffer can drive a …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 49–58 Read article