Browsing by Author "Mamedov, Amirullah M."
Now showing items 1-20 of 33
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2D anisotropic photonic crystals of hollow semiconductor nanorod with liquid crystals
Karaomerlioglu F.; Şimsek, Şevket; Mamedov, Amirullah M.; Özbay, Ekmel (2013)Photonic crystals (PCs) have many applications in order to control light-wave propagation. A novel type of two-dimensional anisotropic PC is investigated band gap and optical properties as a hollow semiconductor nanorod ... -
Ab initio modeling of elastic and optical properties of Sb and Bi sesquioxides
Koc, H.; Akhundov, C. G.; Mamedov, Amirullah M.; Özbay, Ekmel (Institute of Physics Publishing, 2018)First-principle calculations performed the structural, mechanical, electronic, and optical properties of Sb2O3 and Bi2O3 compounds in monoclinic (claudetite and α-Bi2O3) and orthorhombic (valentinite) structures. Local ... -
Band structure and transmission spectra in multiferroic based Sierpinski-carpet phononic crystal
Özer, Z.; Palaz, S.; Mamedov, Amirullah M.; Özbay, Ekmel (EDP Sciences, 2020-06)In this study, the band structure and transmission spectra in multiferroic based Sierpinski-carpet phononic crystal are investigated based on finite element simulation. In order to obtain the band structure of the phononic ... -
Band Structure of Phononic Crystal Consist of Hollow Aluminum Cylinders in Different Media; Finite Element Analysis
Özer, Z.; Demir, M.; Mamedov, Amirullah M.; Özbay, Ekmel (IOP, 2019)In this study, we investigated band structure of a 2D Phononic Crystal (PnC) which was consist of hollow aluminum cylinders in different media. To validate the finite element predictions, we made a square lattice PnC ... -
BaTiO3 based photonic time crystal and momentum stop band
Özer, Z.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor & Francis, 2020-04)Temporally periodic photonic crystals develop an ω-k dispersion relation with momentum band gaps. While conventional photonic crystals induce forbidden bands in the frequency spectrum of photons, photonic time crystals ... -
Complete photonic band gaps in Sn2P2X6 (X = S, Se) supercell photonic crystals
Şimşek, Ş.; Palaz, S.; Koç, H.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor & Francis, 2020-04)In this work, we present an investigation of the optical properties and band structures for the photonic crystal structures (PCs) based on Sn2P2X6: X = S, Se) with Fibonacci superlattices. The optical properties of PCs can ... -
Elastic and optical properties of sillenites: First principle calculations
Koç, H.; Palaz, S.; Şimşek, Ş.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor & Francis, 2020-04)In the present paper, we have investigated the electronic structure of some sillenites - Bi12MO20 (M = Ti, Ge, and Si) compounds based on the density functional theory. The mechanical and optical properties of Bi12MO20 ... -
Elastic, electronic, and optical properties of NaSnX (X=Sb, Bi, As): first principle calculations
Koç, H.; Mamedov, Amirullah M.; Özbay, Ekmel (IOP, 2019)In the present work, the structural, mechanical, electronic and optical properties of NaSnX (X=Sb, B, As) compounds have been investigated by means of first principles calculations. The generalized gradient approximation ... -
Electronic and elastic properties of the multiferroic crystals with the Kagome type lattices -Mn3V2O8 and Ni3V2O8: First principle calculations
Koç, H.; Palaz, S.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor & Francis, 2019-08-16)The electronic, mechanical, and optical properties of the Kagome staircase compounds, Mn3V2O8 and Ni3V2O8, have been investigated using the VASP (Vienna ab-initio Simulation Program) that was developed within the density ... -
Electronic band structure of rare-earth ferroelastics: theoretical investigations
Şimşek, Ş.; Uğur, G.; Uğur, Ş.; Mamedov, Amirullah M.; Özbay, Ekmel (National Institute of Optoelectronics, 2018)In the present work, the electronic band structure and optical properties of RE2(MoO4)3 are investigated. The ground state energies and electronic structures were calculated using density functional theory (DFT) within the ... -
Electronic properties of spin excitation in multiferroics with a spinel structure: first principles calculation
Koç, H.; Palaz, S.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor & Francis, 2019-06-04)In the present work, the structural, electronic and mechanical properties of LiVCuO4 and LiCu2O4 spinel type multiferroics have been investigated by means of first principles calculations. The spin polarized generalized ... -
Ferroelectric based fractal phononic crystals: wave propagation and band structure
Palaz, S.; Özer, Z.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor & Francis, 2020-04)In this study, the band structure and transmission in multiferroic based Sierpinski carpet phononic crystal are investigated based on finite element simulation. In order to obtain the band structure of the phononic crystal ... -
Ferroelectric based microgyroscope for inertial measurement unit: Modeling and simulation
Ozer, Z.; Mamedov, Amirullah M.; Özbay, Ekmel (IEEE, 2012)This paper present the design and modeling of the micro-electromechanical systems (MEMS) on the ternary ferroelectric compounds (PZT and Ba xSr 1-xTiO 3) based by using finite element model (FEM) simulation. © 2012 IEEE. -
Incommensurate phase transition and electronic properties of BaMnF4
Palaz, S.; Şimşek, Ş.; Koç, H.; Babayeva, R.; Mamedov, Amirullah M.; Özbay, Ekmel (IOP, 2019)We present the ab initio study the electronic, mechanical and structural properties of BaMnF4. We duscuss the trends in the electronic and mechanical properties of BaMnF4 under pressure up to 80 GPa. BaMnF4 belongs to ... -
Linear and non-linear optical properties of AgBO3(B=Nb, Ta): First principle study
Şimşek, Şevket; Mamedov, Amirullah M.; Özbay, Ekmel (IEEE, 2013)The linear and nonlinear optical properties of ferroelectrics AgBO 3 (B=Ta, Nb) are studied by density functional theory (DFT) in the local density approximation (LDA) expressions based on first principle calculations ... -
The mechanical, electronic and optical properties of Sn2P2S6 compound in different phases
Koc, H.; Palaz, S.; Simsek, S.; Mamedov, Amirullah M.; Ozbay, Ekmel (Taylor & Francis, 2021-12-01)In present paper, the structural, mechanical, and electronic properties of the Sn2P2S6 compound under different pressures by the density functional methods in the generalized gradient approximation have been examined in ... -
Modeling and simulation of the ferroelectric based micro gyroscope: FEM analysis
Ozer, Z.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor and Francis, 2013-09-23)This paper presents the design and modeling of micro-electromechanical systems (MEMS) on the ternary ferroelectric compounds (PZT) based by using finite element model (FEM) simulation. The conceptual framework establishes ... -
Multiferroic based 2D phononic crystals: band structure and wave propagations
Palaz, S.; Özer, Z.; Ahundov, C.; Mamedov, Amirullah M.; Özbay, Ekmel (Taylor & Francis, 2019-08)In the present work the acoustic band structure of a two-dimensional phononic crystal containing an organic ferroelectric (PVDF- polyvinylidene fluoride) and muliferroic material (LiVCuO4) were investigated by the ... -
One and two dimensional LiNbO3 photonic crystals
Şimşek, Şevket; Mamedov, Amirullah M.; Özbay, Ekmel (IEEE, 2013)In this report, we present an investigation of the optical properties and band structure calculations for the photonic crystal structures (PCs) based on one-dimensional (1D) and two-dimensional (2D) ferroelectric LiNbO3 ... -
Optical properties and electronic band structure of topological insulators on A2 5B36 compound based
Koc H.; Mamedov, Amirullah M.; Özbay, Ekmel (IEEE, 2012)We have performed a first principles study of structural, electronic, and optical properties of rhombohedral Sb 2Te 3 and Bi 2Te 3 compounds using the density functional theory within the local density approximation. The ...