Güncel Gönderiler: Fizik Bölümü
Toplam kayıt 666, listelenen: 521-540
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A simple way to synthesize superparamagnetic iron oxide nanoparticles in air atmosphere: Iron ion concentration effect
(IEEE-Inst Electrical Electronics Engineers Inc, 2010)We have synthesized iron oxide nanoparticles in air atmosphere by coprecipitation. The ratio of [Fe(+2)][Fe(+3)] was fixed at 2/3. The total amount of iron ions in the solution was varied from 250 mmol to 12.5 mmol. X-ray ... -
Composition dependence of structural and magnetic properties of electrodeposited Co-Cu films
(IEEE-Inst Electrical Electronics Engineers Inc, 2010)The structural and magnetic properties of Co-Cu films were studied in terms of Co content in the films. The surface morphology of the films showed that the film with the lowest Co content (3 wt. %) had dendritic structures, ... -
The effect of aln interlayer thicknesses on scattering processes in lattice-matched alınn/gan two-dimensional electron gas heterostructures
(IOP Publishing Ltd, 2009)The scattering mechanisms governing the transport properties of high mobility AlInN/AlN/GaN two-dimensional electron gas (2DEG) heterostructures with various AIN spacer layer thicknesses from zero to 2 nm were presented. ... -
Modification of TiO2(001) surface electronic structure by Au impurity investigated with density functional theory
(Amer Physical Soc, 2009)We have used density functional theory calculations based on the projector augmented wave method to investigate the electronic structure of Au-incorporated anatase TiO2(001) surface. Due to the coordination with several ... -
Dye adsorbates BrPDI, BrGly, and BrAsp on anatase TiO2(001) for dye-sensitized solar cell applications
(Amer Physical Soc, 2009)Using the first-principles plane-wave pseudopotential method within density functional theory, we systematically investigated the interaction of perylenediimide (PDI)-based dye compounds (BrPDI, BrGly, and BrAsp) with both ... -
Kinetic features of the radical species produced in gamma-irradiated dl-tartaric acid and the dosimetric potential of this acid
(Radiation Research Soc, 2009)The room-temperature and high-temperature kinetic features of the radical species produced in solid dl-tartaric acid (dl-TA) gamma-irradiated at room temperature and the dosimetric potential of this acid were investigated ... -
Neutral Higgs sector of the MSSM with explicit CP violation and non-holomorphic soft breaking
(Elsevier Science Bv, 2009)Using the effective potential method, we computed one-loop corrections to the mass matrix of neutral Higgs bosons of the Non-Holomorphic Supersymmetric Standard Model (NHSSM) with explicit CP violation, where the radiative ... -
Higgs boson searches via dileptonic bottomonium decays
(Elsevier Science Bv, 2009)We explore the pseudoscalar eta(b) and the scalar chi(b0) decays into l(+)l(-) to probe whether it is possible to probe the Higgs sectors beyond that of the Standard Model. We, in particular, focus on the Minimal Supersymmetric ... -
Synthesis and structural characterisation of a novel polynuclear copper ribbon-like network. a study of its magnetic properties between 4 and 300 k
(Elsevier Science Sa, 2009)A new route to {Cu-2(kappa(1)-pyNH(2))(2)(mu-OMe)(2)Cl-2}(n) (pyNH(2) = 2-aminopyridine) (3) is reported. Structural characterisation reveals the presence of methoxide and chloride bridging units within the complex which ... -
Fabrication of plasma polymerized polythiophene and polypyrrole thin films as chloroform vapor sensors
(Natl Inst Optoelectronics, 2009)Polythiophene (PTH) and polypyrrole (PPY) thin films were fabricated via a plasma polymerization technique, using a plasma based electron beam generator Glass and quartz crystal substrates were used for the deposition of ... -
Experimental and computational investigations of a cadmium(ıı) mononuclear complex with 2,6-bis(3,5-dimethyl-n-pyrazolyl)pyridine (bdmpp) and selenocyanate as ligands
(Versita, 2009)A new cadmium (II) complex, [Cd(bdmpp)(SeCN)(2) (H(2)O)] (1) (where bdmpp = 2,6-bis(3,5-dimethyl-N-pyrazolyl)pyridine), has been synthesized and characterized by elemental and spectral (IR, (1)H-NMR and (13)C-NMR, UV-Vis) ... -
Influence of Cd2+ ions on electrical properties of stearic acid Langmuir-Blodgett films
(Elsevier Science Sa, 2009)Stearic acid incorporating cadmium ions prepared as an Langmuir-Blodgett (LB) thin films were grown onto aluminum coated glass substrate using different thicknesses to investigate the influence of cadmium ions on the ... -
Electrical properties of Langmuir-Blodgett thin films using calixarene molecules
(Natl Inst Optoelectronics, 2009)Calix[8]acid/calix[4]amine alternate layer Metal-Langmuir-Blodgett film-Metal (M/LB/M) structures were fabricated onto an aluminized glass substrate. Film deposition results indicated that these molecules are suitable to ... -
Characterization of novel 1,3-bis-(p-iminobenzoic acid) indane langmuir-blodgett (lb) films, with and without zn2+ ions
(Natl Inst Optoelectronics, 2009)Y-type 1,3-bis-(p-iminobenzoic acid) indane thin films with and without Zn2+ ions were grown by a LB technique to investigate the influence of the Zn2+ ions on their electrical properties. In this work, 1,3-bis-(p-iminobenzoic ... -
The finite-size scaling study of the specific heat and the binder parameter of the two-dimensional ısing model for the fractals obtained by using the model of diffusion-limited aggregation
(Verlag Z Naturforsch, 2009)The two-dimensional Ising model with nearest-neighbour pair interactions is simulated oil the Creutz cellular automaton by using the finite-size lattices with the linear dimensions L = 80, 120, 160, and 200. The temperature ... -
The electrical, optical, and structural properties of GaN epitaxial layers grown on si(111) substrate with SiNx interlayers
(Academic Press Ltd, 2009)The effect of the in situ substrate nitridation time on the electrical, structural and optical properties of GaN films grown on Si(111) substrates by metal organic chemical vapor deposition (MOCVD) was investigated. A thin ... -
Effects of thermal annealing on the morphology of the alxga(1-x)n films
(Elsevier Sci Ltd, 2009)Effects of thermal annealing on the morphology of the AlxGa(1-x)N films with two different high Al-contents (x=0.43 and 0.52) have been investigated by atomic force microscopy (AFM). The annealing treatments were performed ... -
Electrochemical production of fe-cu films: determination of the deposition potentials and their effect on microstructural and magnetic properties
(Edp Sciences S A, 2009)Fe-Cu alloys were grown on polycrystalline titanium substrates after determining the suitable deposition potentials. Based on the results obtained from cyclic voltammetry curves, a potential region between -1.8 V and -2.3 ... -
A dinuclear oxygen-bridged schiff base iron(ııı) complex derived from n,n'-bis(4-methoxy-2-hydroxybenzylıdene)2,2-dimethylpropane-1,3-diamine
(Pleiades Publishing Inc., 2016)The mu-oxo-bridged Fe(III) dimer complex [{Fe(4-MeOL1)}(2)(mu-O)]center dot HOCH3, (H-2-4-MeOL1 = N,N'-bis(4-methoxy- 2-hydroxybenzylidene)-2,2-dimethylpropane-1,3-diamine), 1 is synthesized and characterized by single ... -
Optical characterization of an N,N-Dicyclohexyl-3,4:9,10-Perylene bis(Dicarboximide) langmuir-blodgett film for the determination of volatile organic compounds
(Taylor & Francis Inc, 2016)Langmuir-Blodgett thin-film fabrication and gas-sensing properties of a novel N,N-dicyclohexyl-3,4:9,10-perylene bis(dicarboximide) material are reported. Surface plasmon resonance was used to study the deposition process. ...
