Güncel Gönderiler: Fizik Bölümü
Toplam kayıt 670, listelenen: 421-440
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The effect of scattering mechanisms on the low field mobility in GaN/AlGaN heterostructures
(Elsevier Science Bv, 2004)The effect of all standard scattering mechanisms, including scattering by acoustic and optical phonons, background impurities and dislocation, on two-dimensional electron gas (2DEG) transport in GaN/AlGaN heterostructures ... -
Thermally stimulated currents in layered Ga4SeS3 semiconductor
(Wiley-V C H Verlag Gmbh, 2004)Thermally stimulated current (TSC) measurements are carried out on nominally undoped Ga4SeS3 layered semiconductor samples with the cur-rent flowing along the c-axis in the temperature range of 10 to 150 K. The results are ... -
The effect of interface roughness scattering on low field mobility of 2D electron gas in GaN/AlGaN heterostructure
(Elsevier Science Bv, 2004)We report the results of our experimental and theoretical studies concerning the temperature dependence of electron mobility in a two dimensional electron gas (2DEG) confined at the GaN/AlGaN interface. Experimental mobility ... -
Monte-Carlo calculations of positron implantation profiles in silver and gold
(Pergamon-Elsevier Science Ltd, 2000)To investigate the implantation profiles of positrons in silver and gold, the Monte-Carlo programs developed previously by Ozmutlu and Aydin (1997) to simulate the transport of positrons in metals was used. The simulation ... -
Synthesis, crystal structure and magnetic properties of a novel Gd-III-Cu-II heterodinuclear complex
(Verlag Z Naturforsch, 2000)Preparation, crystal structure and magnetic properties of a heterodinuclear complex, LCu(Me2CO) Gd (NO3)(3) (L = (N,N'-bis(3-methoxysalicylidene)propane-1,2-diamine) are reported. The crystal structure of the complex was ... -
Investigation of radiation sensitivity of some tartrate compounds
(Oxford Univ Press, 2014)Potential electron spin resonance (ESR) dosimetric application of different compounds of sodium tartrate, such as sodium tartrate dihydrate, sodium bitartrate monohydrate and potassium sodium tartrate tetrahydrate, was ... -
Synthesis and characterization of monomeric Mn (IV) and pseudo-tetrameric Mn (III) complexes: Magnetic properties of Mn (III) complex
(Pergamon-Elsevier Science Ltd, 2014)Two novel monomer Mn (IV) [Mn(3,5-ClL1)(2)]center dot(CH3OH), (1), [3,5-ClL1H(2) = N-(2-hydroxyethyl)-3,5-dichlorosalicylaldimine] (1) and hydrogen-bonded pseudo-tetramer Mn (III) [Mn(5-BrL2)(H2O)(2)](2)center dot[Mn(5-B ... -
3,9-dimethyl-1,11-diphenyl-4,8-diaza-undecane-1,11-dione dihydrate
(Munksgaard Int Publ Ltd, 1999)The title compound, C23H26N2O2. 2H(2)O, displays strong intramolecular N-H ... O [2.637(2) Angstrom] and intermolecular O-H ... O [2.763(4) and 2.842(3) Angstrom] hydrogen bonds within each salicylideneimine unit and water ... -
Tunable wavelength light emission from longitudinally biased p-GaAs/n-Ga1-xAlxAs junction containing GaAs quantum wells: Non-linear dynamics
(Elsevier Science Bv, 1999)We report on the operation and non-linear dynamics of a hot electron device that emits light with wavelength tunability, The device consists of p-GaAs/n-Ga-1 -xAlxAs heterojunction containing an inversion layer on the ... -
The power absorption and the penetration depth of electromagnetic radiation in lead telluride under cyclotron resonance conditions
(Elsevier Science Bv, 1999)Cyclotron resonance absorption in n- and p-type PbTe was observed by Nii and was analysed under classical skin effect conditions. When the values of DC magnetic field corresponding to peaks are plotted against the held ... -
ESR dosimetry and radical kinetics of gamma-irradiated propyl gallate
(Elsevier Science Bv, 2014)Propyl gallate (PG) is one of the most effective synthetic antioxidant. In the present work, the effects of gamma radiation on powder PG were investigated by Electron Spin Resonance (ESR) spectroscopy. The experimental ... -
Doubly phenoxo-bridged M-Na (M = Cu(II), Ni(II)) complexes of tetradentate Schiff base: Structure, photoluminescence, EPR, electrochemical studies and DFT computation
(Pergamon-Elsevier Science Ltd, 2014)Phenoxo-bridged complexes [M(mu-L)Na(ClO4)(CH3OH)] (M = Cu(II) (1) and Ni(II) (2)) (H2L = N,N'-bis(3-methoxysalicylidenimino)-1,3-diaminopropane, C6H3(OMe)(OH)-CH = N-(CH2)(3)-N = CH-C6H3(OMe)(OH)) are structurally ... -
Fabrication of langmuir-blodgett thin film for organic vapor detection using a novel n,n '-dicyclohexyl-3,4:9,10-perylenebis (dicarboximide)
(Elsevier Science Sa, 2014)The Langmuir-Blodgett (LB) thin film fabrication and gas sensing properties of a novel N,N'-dicyclohexyl-3,4:9,10-perylenebis (dicarboximide) (FY2) is reported in this study. Surface pressure changes as a function of surface ... -
Linear attenuation coefficients of tissues from 1 keV to 150 keV
(Pergamon-Elsevier Scıence Ltd, 2014)The linear attenuation coefficients and three interaction processes have been computed for liver, kidney, muscle, fat and for a range of x-ray energies from 1 key to 150 keV. Molecular photoelectric absorption cross sections ... -
Treatment of the olive beta-glycosidase bound superparamagnetic nanoparticles onto green table olives
(Wiley-Blackwell, 2015)Treatment of oliveb-glucosidase bound superparamagnetic ironoxide nanoparticles (SPIONs) onto gren table olives were studied.The SPIONs were prepared by co-precipitation Fe+2and Fe+3ions in an ammonia solution at room ... -
Temperature dependent hot electron transport in slightly lattice mismatched AlInN/AlN/GaN heterostructures
(Natl Inst Optoelectronics, 2014)In this work, the hot-electron transport properties of AlInN/AlN/GaN HEMT structures with a high sheet electron density of 4.84x10(13) cm(-2) grown by MOCVD (Metal Organic Chemical Vapor Deposition) on sapphire substrate ... -
Different contributions in omega -> pi(0)eta gamma and rho -> pi(0)eta gamma decays
(Amer Physical Soc, 2004)We examine the radiative omega-->pi^(0)etagamma and rho-->pi^(0)etagamma decays in a phenomenological framework. We consider the vector meson dominance mechanism, chiral loops, intermediate a(0)-meson and rho-omega mixing. ... -
Azido bridge mediated catecholase activity, electrochemistry and magnetic behavior of a dinuclear copper(II) complex of a phenol based "end-off" compartmental ligand
(Elsevier Science SA, 2015)A dinuclear Cu(II) species [Cu2L2(H2O)(2)(N-3)](NO3)(2) (L = 2,6-bis(N-ethylpyrrolidine-iminomethyl)-4-methyl- phenolato) where two Cu centers are bridged by phenoxido and mu(1,1)-azido bridges with Cu-Cu separation of ... -
Rotation speed-induced uniaxial in-plane anisotropy in thin films deposited onto a rotating substrate
(Kluwer Academic/Plenum Publishers, 2004)The Rotating Cryostat system consists of a rapidly rotating, liquid-nitrogen-cooled drum, around which a substrate can be placed. The possibility of using multiport sources gives the system wide capabilities for producing ... -
First principles study of the structural, mechanical, phonon, optical, and thermodynamic properties of half-Heusler (HH) compound NbFeSb
(Iop Publishing Ltd, 2015)We studied the structural, mechanical, phonon, optical and thermodynamic properties of MgAgAs-based NbFeSb compound by means of first-principles based on the density functional theory. The calculated lattice constant is ...
