Fizik / Physics: Recent submissions

Now showing items 121-140 of 446

Solvent effect in implicit/explicit model on FT-IR, H-1, C-13 and F-19 NMR, UV-vis and fluorescence spectra, linear, second- and third-nonlinear optical parameters of 2-(trifluoromethyl)benzoic acid: Experimental and computational study

Avcı, Davut; Sumeyye Alturk; Tamer, Ömer; Mustafa Kusbazoglu; Atalay, Yusuf (ELSEVIER SCIENCE BV, 2017)

FT-IR, H-1, C-13 and F-19 NMR, UV-vis and fluorescence spectra for 2-(trifluoromethyl)benzoic acid (2 TFMBA) were recorded. DFT//B3LYP/6-31++G(d,p) calculations were used to determine the optimized molecular geometry, ...
The influence of spin orbit interaction on phonons and superconductivity in the noncentrosymmetric superconductors LaPt3Si and LaPtSi3

Uzunok, Hüseyin Yasin; Tütüncü, Hüseyin Murat; G. P. Srivastava; Başoğlu, Adil (ELSEVIER SCI LTD, 2017)

We have performed ab initio study of structural, electronic, vibrational and electron-phonon interaction properties of LaPt3 Si and LaPtSi3 by employing the density functional theory, a linear-response formalism, and the ...
Natural radioactivity levels and related risk assessment in soil samples from Sakarya, Turkey

Tabar, Emre; Yakut, Hakan; Müslim Murat Saç; Caner Taşköprü; Mutlu İçhedef; Adem Kuş (SPRINGER, 2017)

An evaluation of the environmental radioactivity levels in soil samples from Sakarya province (Turkey) was undertaken in order to create a comprehensive radiological map of Sakarya. A total of 85 soil samples collected ...
The effect of spin orbit interaction on the physical properties of LaTSi3 (T = Ir, Pd, and Rh): First-principles calculations

Uzunok, Hüseyin Yasin; Tütüncü, Hüseyin Murat; G. P. Srivastava; E. Ipsara; Başoğlu, Adil (AMER INST PHYSICS, 2017)

We have presented the structural, elastic, electronic, phononic, and electron-phonon interaction properties of the La-based noncentrosymmetric superconductors, such as LaIrSi3, LaRhSi3, and LaPdSi3, by using the generalized ...
First principles study of structural properties of alpha-Sn(001)-(2x1)

Tütüncü, Hüseyin Murat (ELSEVIER SCIENCE BV, 2004)

We have investigated the structural and vibrational properties of the alpha-Sn(001)-(2x1) surface using the density functional perturbation theory and the pseudopotential method. The dimer is tilted by about 22degrees and ...
SOIL GAS RADON MEASUREMENT AROUND FAULT LINES ON THE WESTERN SECTION OF THE NORTH ANATOLIAN FAULT ZONE IN TURKEY

Yakut, Hakan; Tabar, Emre; Eray Yıldırım; Zemine Zenginerler; Ertuğral Yamaç, Filiz; Demirci Sayğı, Nilüfer (OXFORD UNIV PRESS, 2017)

Soil gas radon activity measurements were made around the western section of the North Anatolian Fault Zone. In the study, the variation of radon concentration at 12 different locations along the fault line was monitored ...
Electron-phonon interaction and superconductivity in the multiband superconductor beta-Bi2Pd

S. Saib; Karaca, Ertuğrul; Tütüncü, Hüseyin Murat; G. P. Srivastava (ELSEVIER SCI LTD, 2017)

We have investigated the structural, electronic, and vibrational properties of beta-Bi2Pd in the body-centered tetragonal CaC2 structure using a generalized gradient approximation of the density functional theory and the ...
A novel Cu(II) Complex of Picolinate and 1,10-Phenanthroline: Preparation, Crystal Structure Determination, Spectroscopic Characterization and Nonlinear Optical Studies

Tamer, Ömer; Avcı, Davut; Atalay, Yusuf (SPRINGER, 2017)

A newly synthesized copper (II) complex of picolinic acid (also known as 2-pyridinecarboxylic acid) and 1,10-phenanthroline, [Cu(pic)(2)(phen)]center dot H2O, has been prepared, and its crystal structure has been fully ...
Effective approach for taking into account interactions of quasiparticles from the low-temperature behavior of a deformed fermion-gas model

Abdullah Algin; Arıkan, Ali Serdar (IOP PUBLISHING LTD, 2017)

A deformed fermion gas model aimed at taking into account thermal and electronic properties of quasiparticle systems is devised. The model is constructed by the fermionic Fibonacci oscillators whose spectrum is given by a ...
Spectroscopic and quantum chemical calculation study on 2-ethoxythiazole molecule

Avcı, Davut; Bulent Dede; Semiha Bahceli; Dondu Varkal (ELSEVIER SCIENCE BV, 2017)

In this study, the 2-ethoxythiazole molecule (C5H7NSO) which is a member of the five-membered heterocyles with one nitrogen atom group has been investigated by using the experimental UV-vis (in three different solvents) ...
Structure-property relationship of 3-(N-phthalimidomethyl)-4-amino-1,2,4-triazole-5-thione: A structural, spectroscopic and DFT study

Tamer, Ömer; Moazzam H. Bhatti; Uzma Yunus; Muhammad Nadeem; Avcı, Davut; Atalay, Yusuf; Azra Yaqub; Rumana Quershi (ELSEVIER, 2017)

The title molecule, 3-(N-phthalimidomethyl)-4-amino-1,2,4-triazole-5-thione (C11H9N5O2S), was synthesized by the fusion of N-Phthaloylglycine and thiocarbohydrazide at 145 degrees C. In this study, we have investigated the ...
Comparison of different hybrid DFT methods on structural, spectroscopic, electronic and NLO parameters for a potential NLO material

Sumeyye Alturk; Avcı, Davut; Tamer, Ömer; Atalay, Yusuf (ELSEVIER SCIENCE BV, 2017)

The molecular geometrical, vibrational frequency, molecular static polarizability and hyperpolarizability parameters, as well as HOMO-LUMO energies of 4-Aminopyridinium monophthalate (4-APMP) as potential nonlinear optical ...
First-principles study of structural, mechanical, lattice dynamical and thermal properties of nodal-line semimetals ZrXY (X=Si, Ge; Y=S, Se)

Bahadir Salmankurt; Duman, Sıtkı (TAYLOR & FRANCIS LTD, 2017)

The nodal-line semimetals are new and very promising materials for technological applications. To understand their structural, mechanical, lattice dynamical and thermal properties in detail, we have investigated theoretical ...
Overlapping Large Polaron Conductivity Mechanism and Dielectric Properties of Al0.2Cd0.8Fe2O4 Ferrite Nanocomposite

T. Sasmaz Kuru; Şentürk, Erdoğan; Eyüpoğlu, Volkan (SPRINGER, 2017)

In this work, the conduction and dielectric properties of Al0.2Cd0.8Fe2O4 ferrite nanoparticle, which was synthesized by a co-precipitation method, were investigated. Experimental data were taken from 20 Hz to 10 MHz and ...
First-principles studies of structural, electronic, and dynamical properties of Be chalcogenides

Tütüncü, Hüseyin Murat (AMERICAN PHYSICAL SOC, 2004)

We have studied structural, electronic, and dynamical properties of Be chalcogenides (BeS, BeSe, and BeTe) by employing the plane-wave pseudopotential method within the density functional theory. The calculated lattice ...
Electron-phonon interaction and superconductivity in the La3Ni2B2N3

Tütüncü, Hüseyin Murat; Karaca, Ertuğrul; Ertugrul Karaca; G. P. Srivastava (TAYLOR & FRANCIS LTD, 2017)

Based on first-principles pseudopotential plane-wave method within the generalised gradient approximation, we have studied the structural, electronic, vibrational and BCS superconducting properties of La3Ni2B2N3. The ...
Synthesis, spectroscopic characterization and DFT calculations on N-(Phenylsulfonyl)-L-asparagine (NPLAS): A potential nonlinear optical material

Nergin Gunay; Tamer, Ömer; Dilek Kuzalic; Avcı, Davut; Atalay, Yusuf (ELSEVIER GMBH, 2016)

The N-(Phenylsulfonyl)-L-asparagine (NPLAS), which is a potential nonlinear optical material, was synthesized and its geometric structure was optimized to obtain its geometric parameters, vibration frequencies and electronic ...
Chaos and trend analysis of monthly precipitation over Arabian Peninsula and Eastern Mediterranean

Yıldırım, Hacı Ahmet; Hamza Altinsoy (SPRINGER HEIDELBERG, 2017)

Arabian Peninsula (AP) and Eastern Mediterranean (EM) are two of the hottest regions in the world; and their temperature increased enormously in the last century. In addition, water scarcity has been one of the vital issues ...
E1, E2 and M1 transition parameters for some levels over ionization limit of Ne III

Eser, Selda; Özdemir, Leyla (SPRINGER HEIDELBERG, 2016)

We have reported the level energies and radiative transition (E1, E2 and M1) parameters, such as wavelengths, transition rates, oscillator strengths and line strengths for some levels over the ionization limit of Ne III ...
Theoretical investigation of superconductivity in SrPd2Ge2, SrPd2As2, and CaPd2As2

Karaca, Ertuğrul; Tütüncü, Hüseyin Murat; Uzunok, Hüseyin Yasin; G. P. Srivastava; S. Ugur (AMER PHYSICAL SOC, 2016)

Ab initio pseudopotential calculations have been performed to investigate the structural, electronic, and vibrational properties of SrPd2Ge2, SrPd2As2, and CaPd2As2 crystallizing in the ThCr2Si2-type body-centered tetragonal ...