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Articles 121 - 150 of 1374
Full-Text Articles in Physical Sciences and Mathematics
Octonion Form Of Duality-Invariant Field Equations For Dyons, Mustafa Emre Kansu, Murat Tanişli, Süleyman Demi̇r
Octonion Form Of Duality-Invariant Field Equations For Dyons, Mustafa Emre Kansu, Murat Tanişli, Süleyman Demi̇r
Turkish Journal of Physics
The hypothetical particles dyons, which carry both electric and magnetic charges simultaneously, are widely discussed in application to electromagnetic theory and magnetohydrodynamics. Particularly, the duality-invariant field equations were suggested with suitable definitions of the dyon's electromagnetic characteristics. In this study, we propose an alternative formulation of the duality-invariant field equations for dyons based on octonion algebra. Octonions have been used to express the equations for potentials, field strengths, and sources in a more compact and consistent manner. Additionally, the octonionic form of the energy conservation law for dyons has been derived.
Reactive Wetting Of Metallic/Ceramic (Al/Α-Al2 O3 ) Systems: A Parallel Moleculardynamics Simulation Study, Gürcan Aral
Reactive Wetting Of Metallic/Ceramic (Al/Α-Al2 O3 ) Systems: A Parallel Moleculardynamics Simulation Study, Gürcan Aral
Turkish Journal of Physics
The reactive wetting process of a flat solid alumina (α-Al2 O3) ceramic surface by metallic aluminum (Al) nanodroplets with different shapes (spherical, cylindrical, and layer) is studied using parallel molecular dynamics (MD) simulations based on a variable charge MD method, with focuses on heat transfer, mass transfer, and the structure of the reactive region at the Al/α-Al2 O3 interface. We find that the diffusion of oxygen (O) atoms from the substrate into the droplet leads to the formation of a continuous layer of reaction product at the interface. The diffusion length of oxygen atoms into the spherical Al droplet is …
Structural And Optical Properties Of Zno Films Obtained On Mesoporous Sisubstrates By The Method Of Hf Magnetron Sputtering, Valeriy Kidalov, Alena Dyadenchuk, Yuriy Bacherikov, Anton Zhuk, Tetyana Gorbaniuk, Igor Rogozin, Vitali Kidalov
Structural And Optical Properties Of Zno Films Obtained On Mesoporous Sisubstrates By The Method Of Hf Magnetron Sputtering, Valeriy Kidalov, Alena Dyadenchuk, Yuriy Bacherikov, Anton Zhuk, Tetyana Gorbaniuk, Igor Rogozin, Vitali Kidalov
Turkish Journal of Physics
In the present work, ZnO films were obtained on mesoporous silicon substrates by the method of HF magnetron sputtering of a metallic zinc target in reaction oxygen and argon gas medium. The properties of the ZnO films obtained on mesoporous substrates were studied depending on the ratio of the partial pressures of the working gases (argon/oxygen). X-ray analysis showed that in the process of deposition, the ZnO films of a hexagonal structure were formed. The effect of the porous layer on the structural and luminescent properties of the thin ZnO films was studied. The results showed that the porous silicon …
Anisotropic Magnetoresistance And Planar Hall Effect In Magnetoresistivenife/Pt Thin Film, Erdem Demi̇rci̇
Anisotropic Magnetoresistance And Planar Hall Effect In Magnetoresistivenife/Pt Thin Film, Erdem Demi̇rci̇
Turkish Journal of Physics
The magnetoresistive NiFe/Pt sensor was fabricated by using standard microlithography and sputter deposition techniques and then the magnetic and magnetotransport properties were investigated. The magnetic properties of the sample show that the easy axis of magnetization prefers a predefined direction along the Hall bar. Moreover, the sample has uniaxial magnetic anisotropy due to the growth-induced magnetic anisotropy. On the other hand, the Anisotropic magnetoresistance (AMR) and the Planar Hall effect (PHE) of the sample were investigated in detail between 0° and 360°. The angle-dependent AMR and PHE signals at the in-plane magnetic field of constant magnitude intersect at certain angles. …
Frequency And Voltage Dependence Of Electrical Conductivity, Complex Electricmodulus, And Dielectric Properties Of Al/Alq3 /P-Si Structure, İkram Orak, Abdulkeri̇m Karabulut
Frequency And Voltage Dependence Of Electrical Conductivity, Complex Electricmodulus, And Dielectric Properties Of Al/Alq3 /P-Si Structure, İkram Orak, Abdulkeri̇m Karabulut
Turkish Journal of Physics
In order to enhance the capacitance of the Al/p-Si metal-semiconductor structure, the Alq3 thin film was coated between these two layers using the spin coating technique as the interlayer. The electrical conductivity, real and imaginary parts of electric modulus, dielectric loss and dielectric constant parameters were examined at the room temperature by the help of admittance measurements in the 100 kHz to 1 MHz frequency range. The effect of frequency on the dielectric constant and dielectric loss values is negligible at the negative voltage values, up to about 0.8 V, and these values rapidly ascended after 0.8 V. The function …
Four-Quark Exotic Mesons, Shahin Agaev, Kazem Azizi, Hayri̇ye Sundu Pamuk
Four-Quark Exotic Mesons, Shahin Agaev, Kazem Azizi, Hayri̇ye Sundu Pamuk
Turkish Journal of Physics
We review our investigations devoted to the analysis of the resonances Zc(3900), Zc(4430), Zc(4100), X(4140), X(4274), α1(1420), Y(4660), X(2100), X(2239), and Y(2175) discovered in various processes by Belle, BaBar, BESIII, D0, CDF, CMS, LHCb and COMPASS collaborations. These resonances are considered as serious candidates to four-quark (tetraquark) exotic mesons. We treat all of them as diquark-antidiquark states with relevant spin-parities, find their masses and couplings, as well as explore their dominant strong decay channels. Calculations are performed in the context of the QCD sum rule method. Thus, the spectroscopic parameters of the tetraquarks are evaluated using the two-point sum rules. …
Prediction Of Standard Enthalpies Of Formation Of Boron Nitride Nanocones, Fahimeh Shojaie
Prediction Of Standard Enthalpies Of Formation Of Boron Nitride Nanocones, Fahimeh Shojaie
Turkish Journal of Physics
Prediction of the standard enthalpy of formation (ΔfH0298) of boron nitride nanocone (BNNCs) structures with disclination angles 60°, 120°, and 180°is recommended to be performed by the isodesmic reaction approach. NH3, BH3, and N2H4 were selected as key reference compounds. In order to calculate ΔfH0298 of nanocones, we must first calculate the enthalpies of nanocone rings at their apexes. For this purpose, ΔfH0298 values of 40 different structures, such as boron, nitrogen, and hydrogen compounds, have been calculated by combining Gaussian-4 (G4) theory calculations with the isodesmic and other balanced reactions approach. At each stage of the calculations, the previously …
Study Of Kno Scaling In The Emulsion Based Neutrino Experiments, Çağin Kamişcioğlu
Study Of Kno Scaling In The Emulsion Based Neutrino Experiments, Çağin Kamişcioğlu
Turkish Journal of Physics
KNO scaling was put forward by Koba-Nielsen-Olesen in 1972 and then tested by various experiments up to now. In this paper, the data on charged hadron multiplicity moments with KNO scaling of CHORUS and OPERA, both of them emulsion-based neutrino experiments, are compared. The results are given in detail which is very useful for tuning in MC event generators.
Generating Velocity-Dependent Potential In All Partial Waves, Ashwini Kumar Behera, Ujjwal Laha, Jhasaketan Bhoi
Generating Velocity-Dependent Potential In All Partial Waves, Ashwini Kumar Behera, Ujjwal Laha, Jhasaketan Bhoi
Turkish Journal of Physics
Velocity/energy-dependent potential to a parent nonlocal interaction is constructed for all partial waves by Taylor series expansion method and the related s and p-wave phase shifts for N-N and α-N systems are computed by application of modified phase equation. Our phase shifts are in good agreement with standard data.
On-Chip Quantum Optics And Integrated Optomechanics, David Hoch, Timo Sommer, Sebastian Mueller, Menno Poot
On-Chip Quantum Optics And Integrated Optomechanics, David Hoch, Timo Sommer, Sebastian Mueller, Menno Poot
Turkish Journal of Physics
Recent developments in quantum computing and the growing interest in optomechanics and quantum optics need platforms that enable rapid prototyping and scalability. This can be fulfilled by on-chip integration, as we present here. The different nanofabrication steps are explained, and our automated measurement setup is discussed. We present an opto-electromechanical device, the H-resonator, which enables optomechanical experiments such as electrostatic springs and nonlinearities and thermomechanical squeezing. Moreover, it also functions as an optomechanical phase shifter, an essential element for our integrated quantum optics efforts. Besides this, the equivalent of a beam splitter in photonics-the directional coupler-is shown. Its coupling ratio …
Investigation Of Some Nuclear Structure Properties Of 213bi, 201ti, 188re, 186re, 133xe, 131i, 125i, 123i, 111in, 94tc, 90y, 67ga, 67cu, 62cu, 61cu, 55co, And 48v Nuclei Used In Spect In Axial Deformation, Ozan Artun
Turkish Journal of Physics
The present work mainly purposed to investigate significant nuclear structure properties nuclei used in single photon emission computed tomography (SPECT), in addition to ground state nuclear properties such as the binding energy per particle, the root mean square (rms) charge, and proton and neutron radii. Besides, we calculated the neutron skin thicknesses (NST), the proton, neutron quadrupole moments ($Q_{P}, Q_{N})$, quadrupole deformation parameter ($\beta_{2})$, and the proton and neutron pairing energies ($P_{P}, P_{N})$ to determine shapes and deformations of SPECT nuclei including odd-odd or odd-even/even-odd nuclei in axial symmetry for Skyrme and Gogny interactions. To analyze the accuracy of the …
A Nonminimally Coupled, Conformally Extended Einstein-Maxwell Theory Of Pp-Waves, Dündar Teki̇n Dereli̇, Yorgo Şeni̇koğlu
A Nonminimally Coupled, Conformally Extended Einstein-Maxwell Theory Of Pp-Waves, Dündar Teki̇n Dereli̇, Yorgo Şeni̇koğlu
Turkish Journal of Physics
A nonminimal coupling of Weyl curvatures to electromagnetic fields is considered in Brans-Dicke-Maxwell theory. The gravitational field equations are formulated in a Riemannian spacetime where the spacetime torsion is constrained to zero by the method of Lagrange multipliers in the language of exterior differential forms. The significance and ramifications of nonminimal couplings to gravity are examined in a pp-wave spacetime.
Field-Free Quantum-Spin-1/2 Xxz Model In Three-Dimensions: Phases, Phase Transitions, And Phase Diagrams By Renormalization Group Theory, Ozan Sabahatti̇n Sariyer
Field-Free Quantum-Spin-1/2 Xxz Model In Three-Dimensions: Phases, Phase Transitions, And Phase Diagrams By Renormalization Group Theory, Ozan Sabahatti̇n Sariyer
Turkish Journal of Physics
The field-free quantum-spin-1/2 XXZ model is studied in three-dimensions using renormalization group theory. We obtain global phase diagrams and critical properties. We identify zero-temperature quantum phase transitions at isotropic points, as well as long-range order below critical temperatures at all anisotropies. We show that the excitation spectrum is gapless in XY-like, and gapped in Ising-like anisotropy regimes. Besides, internal energy density, specific heat, nearest-neighbor entanglement measures and spin-spin correlations are obtained globally at all temperatures. Our numerical results cover the global range of anisotropy parameter, for both ferromagnetic and antiferromagnetic cases.
Influence Of Annealing On Photoelectric Characteristics And Stability Of Elements Based On Si-Bi$_{2}$Te$_{3-X}$Se$_{X}$, Gurban Ahmadov
Influence Of Annealing On Photoelectric Characteristics And Stability Of Elements Based On Si-Bi$_{2}$Te$_{3-X}$Se$_{X}$, Gurban Ahmadov
Turkish Journal of Physics
In the manufacture of Bi$_{2}$Te$_{3-x}$Se$_{x}$-based elements using two sources of the deposited substance, they were initially annealed at a temperature of 150-200 \textdegree Ñ in a low vacuum. Heat treatment led to a slight increase in short circuit current and an increase in open circuit voltage. When the elements were heated in high vacuum, as well as in atmospheres of argon, nitrogen, hydrogen, helium and other gases, irreversible changes in the characteristics were not detected. Heat treatment of elements at a temperature of 100--150 \textdegree C in oxygen always improves their performance. It is assumed that annealing stimulates the growth …
On Current-Voltage And Capacitance-Voltage Characteristics Of Metal-Semiconductor Contacts, Abdulmeci̇t Turut
On Current-Voltage And Capacitance-Voltage Characteristics Of Metal-Semiconductor Contacts, Abdulmeci̇t Turut
Turkish Journal of Physics
It is expected the fact that the current following across metal-semiconductor (MS) rectifying contact named as Schottky barrier diode(SBDs)and effect of sample temperature on their electrical properties obey thermionic emission (TE) current model. But, it has been seen that the abnormal behaviors in the measured electrical characteristics cannot be exactly under stood by the classical TE transport theory. Intheliterature, the observed abnormal behaviors have been successfully explained by a Gaussian distribution function and by the pinch-off model being interaction of the neighbor patches suggested by Tung and coworkers, the named discrete regions model as "patches" with low barrier placed in …
The Calculation Of Total Fragment Excitation Energy For Photofission Of Uranium Isotopes, Mojtaba Jamiati, Payam Mehdipour Kaldiani
The Calculation Of Total Fragment Excitation Energy For Photofission Of Uranium Isotopes, Mojtaba Jamiati, Payam Mehdipour Kaldiani
Turkish Journal of Physics
The total excitation energy as a function of fragment mass (TXE/A) are calculated for neutron induced fission of $^{235}$U and photofission of $^{238}$U by using the statistical model. With comparing the calculated results and the experimental data, the statistical model is modified. In new modified model, TXE are calculated by adding the neutron binding energy to the deformation energy. The calculated results using modified statistical model are in good agreement with the experimental data. Then, the total excitation energy as a function of fragment mass (TXE/A) are evaluated for photofission of Uranium isotopes.
Unraveling Energy Consumption By Using Low-Cost And Reevaluated Thermoelectric Thin Films, Gi̇zem Durak Yüzüak, Seray Özkan, Ercüment Yüzüak
Unraveling Energy Consumption By Using Low-Cost And Reevaluated Thermoelectric Thin Films, Gi̇zem Durak Yüzüak, Seray Özkan, Ercüment Yüzüak
Turkish Journal of Physics
Energy is undoubtedly one of our most important demands whose consumption is constantly increasing and will continue to increase soon. One of the most important factors in attaining the required energy is to provide high efficiency at a low cost with the help of new technological improvements by evaluating wastes. Energy demand could be achieved for a relatively large thermoelectric power value by recycling the Peltier modules from waste ones and adjusting their properties with nanotechnology. For this aim, thermoelectric thin film modules were grown on silicon (Si), glass, and Kapton substrates with thermal evaporation method by using two different …
Stable Anisotropic Single-Layer Of Rete$_2$: A First Principles Prediction, Mehmet Yağmurcukardeş
Stable Anisotropic Single-Layer Of Rete$_2$: A First Principles Prediction, Mehmet Yağmurcukardeş
Turkish Journal of Physics
In order to investigate the structural, vibrational, electronic, and mechanical features of single-layer ReTe$_2$ first-principles calculations are performed. Dynamical stability analyses reveal that single-layer ReTe$_2$ crystallize in a distorted phase while its 1H and 1T phases are dynamically unstable. Raman spectrum calculations show that single-layer distorted phase of ReTe$_2$ exhibits 18 Raman peaks similar to those of ReS$_2$ and ReSe$_2$. Electronically, single-layer ReTe$_2$ is shown to be an indirect gap semiconductor with a suitable band gap for optoelectronic applications. In addition, it is found that the formation of Re-units in the crystal induces anisotropic mechanical parameters. The in-plane stiffness and …
Weak Deflection Angle Of Black-Bounce Traversable Wormholes Using Gauss-Bonnet Theorem In The Dark Matter Medium, Ali Övgün
Turkish Journal of Physics
Inthispaper, wefirstusetheopticalmetricsofblack-bouncetraversablewormholestocalculatetheGaussian curvature. Then we use the Gauss-Bonnet theorem to obtain the weak deflection angle of light from the black-bounce traversable wormholes. We investigate the effect of dark matter medium on weak deflection angle using the Gauss-Bonnet theorem. We show how weak deflection angle of wormhole is affected by the bounce parameter a. Using the Gauss-Bonnet theorem for calculating weak deflection angle shows us that light bending can be thought as a global and topological effect.
Optimization Of Collection Optics For Maximum Fidelity In Entangled Photon Sources, Kadi̇r Durak
Optimization Of Collection Optics For Maximum Fidelity In Entangled Photon Sources, Kadi̇r Durak
Turkish Journal of Physics
In this report,decoherence sources for entangled photons created by spontaneous parametricdown-conversion phenomenon are studied. The phase and spatial distinguishability of photon pairs from orthogonal crystals reduce the maximum achievable entanglement fidelity. Carefully chosen compensation crystals are used to erase the phase and spatial traces of down-conversion origins. Emission angle of photon pairs also leads to optical path difference and results in phase distinguishability. A realistic scenario is numerically modelled, where the photon pairs with nonzero emission angle gather a phase difference. These pairs can still be collected and manipulated for practical use but the collection optics adds upon the phase …
Quantum Gravity Correction To The Thermodynamic Quantities Of The Charged Drgt Black Hole, Gani̇m Geçi̇m
Quantum Gravity Correction To The Thermodynamic Quantities Of The Charged Drgt Black Hole, Gani̇m Geçi̇m
Turkish Journal of Physics
In this study, in the framework of the Hamilton approach, the quantum gravity effect on Hawking temperature, on the specific heat capacity, and on the stability conditions of the charged de Rham, Gabadadze, and Tolley (dRGT) black hole are investigated by using the tunneling processes of both charged massive scalar and Dirac particles. It is shown that quantum corrected Hawking temperature depends not only on the black hole properties but also on the properties of the tunnelling particles. It is also observed that quantum corrected Hawking temperature is lower than that of the standard Hawking temperature. Also, the specific heat …
Electroweak Decays Of Unflavored Mesons In Poincaré Covariant Quark Model, Vadzim Haurysh, Viktor Andreev
Electroweak Decays Of Unflavored Mesons In Poincaré Covariant Quark Model, Vadzim Haurysh, Viktor Andreev
Turkish Journal of Physics
This work presents the procedure for obtaining integral representation of the radiative decay constant in the Poincaré-covariant quark model, based on Poincaré-invariant quantum mechanics. In the course of the work the authors give numerical estimates of magnetic moments of the light quarks ($u,d,s$) from the $V\rightarrow P\gamma$ decay, based on the calculation method of the observer that was previously developed. This technique is generalized in the case of the decay $P\rightarrow V\gamma$ with further numerical calculation of mixing angles $\eta-\eta^{\prime}$ of pseudoscalar mesons. Within the framework of the offered approach, we obtain a self-consistent model that describes radiative and leptonic …
On Possible Inversion Effects In The Technology Of Capillary-Porous Materials, Bulbul Yerzhenbek
On Possible Inversion Effects In The Technology Of Capillary-Porous Materials, Bulbul Yerzhenbek
Turkish Journal of Physics
The article discusses the possible place and role of the well-known thermodynamic Joule-Thomson effect in the technology of capillary-porous materials. The presence of the Joule-Thomson effect in these materials is substantiated by the peculiarities of the mechanism and kinetics of the diffusion physicochemical processes proceeding when they are heated. A mathematical description of the integral effects in capillary-porous materials under isothermal conditions is given.
Relativistic Dynamics Of A Scalar Boson Confined By Woods-Saxon Potential In Anucleus, Nuray Candemi̇r
Relativistic Dynamics Of A Scalar Boson Confined By Woods-Saxon Potential In Anucleus, Nuray Candemi̇r
Turkish Journal of Physics
We undertook a theoretical study of a scalar boson confined by Woods-Saxon potential in a nucleus via the Duffin-Kemmer-Petiau equation. We analytically obtained the eigenvectors and energy levels through the hypergeometric functions. Single-particle energy levels of a boson in the ${}^{208} {Pb}$ nucleus were calculated numerically.
Determination Of Effective Resonance Energies For The $^{185}$Re(N,$\Gamma )^{186}$Re And $^{187}$Re(N,$\Gamma )^{188}$Re Reactions By Cadmium Ratio Method, Mustafa Güray Budak
Determination Of Effective Resonance Energies For The $^{185}$Re(N,$\Gamma )^{186}$Re And $^{187}$Re(N,$\Gamma )^{188}$Re Reactions By Cadmium Ratio Method, Mustafa Güray Budak
Turkish Journal of Physics
The effective resonance energy ($\bar{E}_{r})$ values for the $^{185}$Re(n,$\gamma )^{186}$Re and $^{187}$Re(n,$\gamma )^{188}$Re reactions were measured by using the cadmium ratio method. $^{197}$Au and $^{98}$Mo isotopes were selected as dual monitors to determine the epithermal neutron spectrum shape factor in the irradiation sites of a 37 GBq $^{241}$Am-Be neutron source. The analytical grade rhenium(VII) oxide samples were diluted with Al$_{2}$O$_{3}$ powder to reduce neutron self-shielding effects, and they were put into 1-mm thick small cylindrical polytetrafluoroethylene (PTFE) boxes. Samples were irradiated in a $^{241}$Am-Be neutron source. The activation produced in the irradiated samples was measured in close-counting geometry on the …
Modified Atomic Number Dependence Of Total Bremsstrahlung Spectra Incompounds, Suhansar Jit Sharma, Tajinder Singh, Doordarshi Singh, Amrit Singh, Amarjit Singh Dhaliwal
Modified Atomic Number Dependence Of Total Bremsstrahlung Spectra Incompounds, Suhansar Jit Sharma, Tajinder Singh, Doordarshi Singh, Amrit Singh, Amarjit Singh Dhaliwal
Turkish Journal of Physics
The total bremsstrahlung (BS) generated in compounds of BaCl2.2H2 O, CuCl2: 2H2O, Pb(CH3 COO)2.3H2O, PbCl2, Pb(NO3)2, and CuSO4.5H2 O by 90Sr was investigated using a Si(Li) detector to determine the dependence of the BS spectra on the modified atomic number (Zmod) of compounds in the photon energy range of 1-100 keV. A continuous decrease in the Zmod dependence of the bremsstrahlung spectra in the energy range of 1-30 keV was observed, followed by a slow increase thereafter, i.e. in the range of 30-100 keV. The stronger Zmod dependence of the spectra at low photon energy was expected to be the …
The Ground State Of Pentaquarks With Cluster Structure In The Few-Body Systemapproach, Zari Binesh, Mohammad Reza Shojaei, Behnam Azadegan
The Ground State Of Pentaquarks With Cluster Structure In The Few-Body Systemapproach, Zari Binesh, Mohammad Reza Shojaei, Behnam Azadegan
Turkish Journal of Physics
In this study, an analytical model is presented based on the Nikiforov-Uvarov method for the Θ+ exotic KN resonance as a kind of pentaquark. The radial Schrödinger equation for the central Yukawa and modified Yukawa potentials was solved for Θ+ by use of the Nikiforov-Uvarov method. The energy eigenvalues and corresponding wave functions of Θ+ were obtained in terms of potential coefficients and n,l quantum numbers. Finally, the potential coefficients were determined according to the binding energy of Θ+ exotic KN resonance. The potentials and wave functions of Θ+ exotic KN resonance for different sets of potential coefficients are also …
Dispersive Parameters Of Oxidized Pva-Pvp Blend Films, Goputta Veena, Blaise Lobo
Dispersive Parameters Of Oxidized Pva-Pvp Blend Films, Goputta Veena, Blaise Lobo
Turkish Journal of Physics
Oxidized (ox) polyvinyl alcohol (PVA)-polyvinyl pyrrolidone (PVP) blend films were prepared by solution casting technique, with doping levels of the oxidizer, potassium permanganate (KMnO4) , varying from 0.01 up to 4.70 weight percent (wt.%). Optical (UV-Vis) spectral measurements in the wavelength range varying from 190 nm to 1000 nm were used to extract the band gap information and to calculate various optical parameters of the ox-PVA-PVP blend films. The electronic transitions on absorption of photons of suitable energy are of indirect allowed type. The corresponding optical band gap (Eg) has been determined. Optical dispersion parameters for ox-PVA-PVP films were determined …
Thermodynamic Properties Of V, Cr, Mo, And Fe Metals And Their Binary Alloys, Taiwo Akande, Fadeke Matthew-Ojelabi, Gbenga Agunbiade, Ebenezer Babatope Faweya
Thermodynamic Properties Of V, Cr, Mo, And Fe Metals And Their Binary Alloys, Taiwo Akande, Fadeke Matthew-Ojelabi, Gbenga Agunbiade, Ebenezer Babatope Faweya
Turkish Journal of Physics
The interactions between distinctive alloying elements have been scrutinized through atomistic investigation for essential material selection. The tight-binding model was applied to compute the thermodynamic properties of V, Cr, Mo, and Fe metals and their binary alloys. The calculated results agree with the accessible experiment in some cases, while some are closer in agreement with the experiment. The minimum formation enthalpies observed are -17.80, -15.20, -13.10, -11.50, and -0.90 eV for Cr-Mo, Cr-V, Fe-V, V-Fe, and Mo-Cr, respectively. The Cr-Mo alloy is the most stable of all the selected alloys with the least formation enthalpy. For the alloy structure, bcc …
Chemical Synthesis Of Zinc Oxide Nanorods And Their Transformation Intonanotubes, Pijus Kanti Samanta
Chemical Synthesis Of Zinc Oxide Nanorods And Their Transformation Intonanotubes, Pijus Kanti Samanta
Turkish Journal of Physics
A simple wet chemical method was successfully deployed to synthesize zinc oxide nanorods and nanotubes of hexagonal morphology. Energy dispersive X-ray spectroscopy confirmed the formation of ZnO with almost equal atomic percentages of Zn and O atoms. The FESEM images confirmed the formation of ZnO nanorods and nanotubes of length 1.5 to 2 $\mu $m and diameter 500 nm to 1 $\mu $m. The growth of the nanorods saturated under the combined effect of ionic association of Zn$^{2+}$ and OH$^{-}$ ions, Gibbs' energy of the reaction, reaction temperature, and the enthalpy of the system. Further stirring led to dissolution resulting …