Bölüm "Fakülteler, Fen Edebiyat Fakültesi, Fizik Bölümü" Scopus İndeksli Yayınlar Koleksiyonu için listeleme
Toplam kayıt 89, listelenen: 1-20
-
2D Finite Element Analysis of Pinning Induced Stress in HTS Power Transmission Cables Made of 2G Superconducting Tapes with and without Magnetic Substrate
(IEEE-Inst Electrical Electronics Engineers Inc, 2016)In a two-layer superconducting cable, we numerically investigated the effect of magnetic properties and alignment of the substrates of the tapes on the stress distribution induced by a very high transported electric current. ... -
3D Profile Measurements of Objects by Using Zero Order Generalized Morse Wavelet
(Amer Inst Physics, 2017)Generalized Morse wavelets are proposed to evaluate the phase information from projected fringe pattern with the spatial carrier frequency in the x direction. The height profile of the object is determined through the phase ... -
Ab initio lattice dynamics and thermodynamics of rare-earth hexaborides LaB6 and CeB6
(Amer Physical Soc, 2010)We have performed an ab initio study of structural, elastic, lattice-dynamical, and thermodynamical properties of rare-earth hexaborides LaB6 and CeB6. The calculations have been carried out within the density-functional ... -
Ab initio study of structural, elastic, and vibrational properties of transition-metal disilicides NbSi2 and TaSi2 in hexagonal C40 structure
(Elsevier, 2018)We present an ab initio study of structural, elastic and vibrational properties of transition-metal disilicides NbSi2 and TaSi2. The calculations have been carried out within the density-functional theory and linear-response ... -
Ab initio study on the rare-earth iron-pnictides RFeAsO (R = Pr, Nd, Sm, Gd) in the low-temperature Cmma phase
(Iop Publishing Ltd, 2014)We present density functional theory calculations on the iron-based pnictides RFeAsO (R = Pr, Nd, Sm, Gd). The calculations have been carried out using plane waves and the projector augmented wave (PAW) pseudopotential ... -
AC Loss Analysis of HTS Pancake Coil of Coated Superconductors with Ferromagnetic Substrate
(Springer, 2017)The influence of the ferromagnetic substrate on the AC loss of an HTS coil is extensively investigated by the finite element method. The model assumes the utilization of the coated conductors with a ferromagnetic substrate ... -
Alternative approach for determination of energy band gap of semiconductors through electrical analysis
(2010)Traditional way of extracting energy band gap (EG) of semiconductors from UV-Visible transmisson measurement becomes difficult once EG lies below than 1 eV. Instead of optical excitation of electrons from valance to ... -
Analysis of current conduction mechanism in CZTSSe/n-Si structure
(Springer, 2018)In this study, Cu2ZnSn(S,Se)(4) (CZTSSe) thin films were deposited by the single step thermal evaporation process using the sintered powder of CZTSSe on soda lime glass (SLG) and Si wafer substrates. The structural, optical, ... -
Binding energy of 2p-bound state of a hydrogenic donor impurity in a GaAs/Ga1-xAlxAs spherical quantum dot under hydrostatic pressure
(Elsevier, 2014)By using a variational procedure within the effective mass approximation, we calculated the 2p state binding energy, E-2pha(x,P), and the binding energy turning point, R-2pEbT (X, P) of a hydrogenic donor impurity located ... -
Brans-Dicke-Maxwell solutions for higher dimensional static cylindrical symmetric spacetime
(Amer Inst Physics, 2015)In this paper, Brans-Dicke-Maxwell type vacuum solutions are considered for a static cylindrically symmetric spacetime in arbitrary dimensions. Exact solutions are obtained by directly solving the field equations for the ... -
Calculation of AC loss in two-layer superconducting cable with equal currents in the layers
(Elsevier, 2016)A new method for calculating AC loss of two-layer SC power transmission cables using the commercial software Comsol Multiphysics, relying on the approach of the equal partition of current between the layers is proposed. ... -
Characterization of CdS films and CdS/Si heterojunctions prepared by ultrasonic spray pyrolysis and their response to light
(Elsevier B.V., 2020)In this work CdS thin films were deposited onto glass and p-Si substrates by ultrasonically spraying of precursor solutions prepared in molarity ranging from 0.025 M, to 0.1 M. Structural investigations revealed that all ... -
Characterization of Cu-rich and Zn-poor Cu2ZnSnS4 single crystal grown by vertical Bridgman technique
(Elsevier B.V., 2021)To date, although a number of studies have focused on understanding the fundamental properties of Cu-poor/Zn-rich Cu2ZnSnS4 (CZTS) single crystals, little attention has been paid to investigate the physical properties of ... -
Characterization of one-step deposited Cu2ZnSnS4 thin films derived from a single crystalline powder
(Pergamon-Elsevier Science Ltd, 2019)In this paper, Cu-deficient and Zn-rich Cu2ZnSnS4 (CZTS) single crystals were successfully grown by Bridgman technique. Following the investigation of structural and photo-electrical properties of the grown CZTS crystal, ... -
Characterization of vibrational and mechanical properties of quaternary compounds Cu2ZnSnS4 and Cu2ZnSnSe4 in kesterite and stannite structures
(Amer Physical Soc, 2011)In this paper, structural, elastic, and dynamical properties of Cu2ZnSnS4 and Cu2ZnSnSe4 are calculated for kesterite and stannite structures using the density functional and density functional perturbation theories. The ... -
Classification of Robinson-Trautman and Kundt geometries with Large D limit
(Springer, 2022)Algebraic classification of higher dimensional, shear-free, twist-free, expanding (or non-expanding) spacetime is studied with the limit of D -> infinity. Similar to classification of any arbitrary dimension D > 4, this ... -
A Comparative Study of AC Transport and Eddy Current Losses for Coil Made of HTS Tapes Coated with Copper Stabilizer
(Springer, 2017)In this work, the evaluation of AC loss of the pancake coils wound by HTS-coated conductors, by employing the finite element method in 2D, is presented. The transport current loss of the superconducting tape and the eddy ... -
Comprehensive investigation of the extremely low lattice thermal conductivity and thermoelectric properties of BaIn2Te4
(Amer Physical Soc, 2022)Recently, an extremely low lattice thermal conductivity value has been reported for the alkali-based telluride material BaIn2Te4. The value is comparable with low-thermal conductivity metal chalcogenides, and the glass ... -
Conformal cosmological black holes: Towards restoring determinism to Einstein theory
(Springer Heidelberg, 2019)A widespread solution-generating technique of general relativity consists of conformally transforming known seed solutions. It is shown that these new solutions always solve the field equations of a pathological Brans-Dicke ... -
Construction of self-assembled vertical nanoflakes on CZTSSe thin films
(Institute of Physics Publishing, 2019)Cu2ZnSn(S, Se)4 (CZTSSe) is a promising alternative absorber material to achieve high power conversion efficiencies, besides its property of involving low-cost and earth-abundant elements when compared to Cu(In, Ga)Se2 ...