Jamil Khalifeh - Academia.edu (original) (raw)

Papers by Jamil Khalifeh

Research paper thumbnail of Structural, electronic and elastic properties of the B2-ScM ( M = Au , Hg and Tl ) intermetallic compounds: Ab initio calculations

International Journal of Computational Materials Science and Engineering, 2015

Research paper thumbnail of Magnetism of transition metal overlayers: Fe/Cr stepped interfaces

AIP Conference Proceedings, 1996

ABSTRACT

Research paper thumbnail of Hydrogen-hydrogen chemical interaction in nickel

Http Dx Doi Org 10 1080 13642818808211249, Aug 20, 2006

Research paper thumbnail of Forces, Dipole Force Tensor and Elastic Binding Energy in α-Palladium Hydrides

Electronic Structure and Properties of Hydrogen in Metals, 1983

Research paper thumbnail of Structural, electronic and magnetic properties of (Z=Al, Ge, Sb) Heusler alloys

Research paper thumbnail of A simple tight-binding estimate of the dipole force tensor in α-palladium hydrides

Journal de Physique, 1982

Research paper thumbnail of Structural and Electronic Properties of Δ-NbN Single Crystal: First Principles Calculations

Hwang/Characterization, 2013

Research paper thumbnail of Electronic structure of hydrogen in nickel and its trapping by impurities

Journal of the Less Common Metals, 1987

ABSTRACT

Research paper thumbnail of Photon-induced L-shell x-ray intensity ratio for elements with 73 ⩽ Z ⩽ 83 in the energy range 17 ⩽ E ⩽ 47 keV

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1988

ABSTRACT The L-shell x-ray intensity ratios I(Lβ)/I(Lα) and I(Lγ)/I(Lα) for elements with 73 ⩾ Z ... more ABSTRACT The L-shell x-ray intensity ratios I(Lβ)/I(Lα) and I(Lγ)/I(Lα) for elements with 73 ⩾ Z ⩽ 83 have been measured at photon incident energies of 17.8, 25.8 and 46.9 keV. The emitted x-rays were measured with a Si(Li) detector system. The results for Re, Pt and Tl are being reported for the first time. A comparison is made of the experimental results with the calculated values obtained by using the theoretical x-ray emission rates, subshell ionisation cross sections, subshell fluorescence yields and Coster-Kronig transition probabilities. The experimental results are in reasonable agreement with the theoretical values.

Research paper thumbnail of Perturbed Infinite 3D Simple Cubic Network of Identical Capacitors

Acta Physica Polonica A, 2014

ABSTRACT The effective capacitance between the origin and any other lattice site, in an infinite ... more ABSTRACT The effective capacitance between the origin and any other lattice site, in an infinite 3D simple cubic network consisting of identical capacitors, is evaluated in terms of the Lattice Green’s Function (LGF) of the network. The perfect case is reviewed shortly, while the perturbed case (a capacitor is removed) is studied in two cases. Numerical values of the effective capacitance are presented and the asymptotic behavior is studied for the both cases.

Research paper thumbnail of Nonlinear Impurity for a square and BCC Lattices

The graph isomorphism problem is about deciding whether two graphs are actually the same even if ... more The graph isomorphism problem is about deciding whether two graphs are actually the same even if they look different in their graphical or adjacency matrix representation. The problem has important applications, especially in the field of computer science, chemistry and bio-...

Research paper thumbnail of Remarks on the lattice Green's Function for the anisotropic Face Centered Cubic Lattice

An expression for the Green's function (GF) of anisotropic face centered cubic lattice is eva... more An expression for the Green's function (GF) of anisotropic face centered cubic lattice is evaluated analytically and numerically for a single impurity problem. The density of states (DOS), phase shift and scattering cross section are expressed in terms of complete elliptic integrals of the first kink.

Research paper thumbnail of الفيزياء: المبادئ والتطبيقات

Research paper thumbnail of Ion beam induced mixing of the Cu/Si system using electrical resistivity and RBS measurements

Physica Status Solidi (a), 1988

ABSTRACT The ion-beam mixing of Cu thin films evaporated on silicon is investigated by measuring ... more ABSTRACT The ion-beam mixing of Cu thin films evaporated on silicon is investigated by measuring continuously the electrical resistivity of the samples during Kr ion irradiation. Rutherford backscattering spectra with 2.0 MeV He ions are measured after beam irradiation. The resistivity results exhibit a tendency toward a saturation process and allow the determination of the critical dose corresponding to the total mixing condition. The dependence of the normalized variation of the conductivity of intermixed atoms on the ion dose is deduced and compared with a semiempirical formula to explain the observed mixing kinetics. The above results are confirmed with the RBS measurements.Mittels kontinuierlicher Messung des elektrischen Widerstands der Proben während Kr-Ionenbestrahlung wird die Ionenstrahlmischung von dünnen auf Silizium aufgedampften Cu-Schichten untersucht. Rutherfordrückstreuspektren mit 2,0 MeV-He-Ionen werden nach der Bestrahlung gemessen. Die Widerstandsergebnisse zeigen eine Tendenz zu einem Sättigungsprozeß und erlauben die Bestimmung der kritischen Dosis entsprechend der Bedingung vollständiger Mischung. Die Abhängigkeit der normierten Variation der Leitfähigkeit von vermischten Atomen von der Ionendosis wird abgeleitet und mit einer halbempirischen Formel zur Erklärung der beobachteten Mischungskinetik verglichen. Die dargelegten Ergebnisse werden mit RBS-Messungen erhärtet.

Research paper thumbnail of A DFT study of substrate effect on the magnetism of V(001) surface

Surface Science, 2011

ABSTRACT The effect of isoelectric transition metals (TM) Nb and Ta on the magnetism of the V(001... more ABSTRACT The effect of isoelectric transition metals (TM) Nb and Ta on the magnetism of the V(001) surface is investigated from first principles using Density functional theory (DFT), with the generalized gradient approximation (GGA). Ferromagnetic (FM) moments of 2.5 μB and 2.2 μB are obtained for the relaxed surface V monolayer (ML) in the V/Nb(001) and the V/Ta(001) systems respectively, at T = 0 K. The values are almost twice of those obtained with Mo and W of group VIB and can be attributed to the comparatively smaller bandwidths of the substrates Nb and Ta. Small induced magnetic moments are present on the Nb and Ta interfacial layers, which are coupled anti-ferromagnetically with the V ML.

Research paper thumbnail of LMSES (LA CNRS 306)-Universitg Louis Pasteur-it, rue Blaise Pascal 67070 Strasbourg Cedex (France)

Research paper thumbnail of Magnetic order in ultrathin iron layers on Pd (001)

Research paper thumbnail of Antiferromagnetism of Cr sub n/Mn systems

Research paper thumbnail of All Rights R C1-L

Research paper thumbnail of Investigation of interlayer exchange coupling across metallic spacer layers

Research paper thumbnail of Structural, electronic and elastic properties of the B2-ScM ( M = Au , Hg and Tl ) intermetallic compounds: Ab initio calculations

International Journal of Computational Materials Science and Engineering, 2015

Research paper thumbnail of Magnetism of transition metal overlayers: Fe/Cr stepped interfaces

AIP Conference Proceedings, 1996

ABSTRACT

Research paper thumbnail of Hydrogen-hydrogen chemical interaction in nickel

Http Dx Doi Org 10 1080 13642818808211249, Aug 20, 2006

Research paper thumbnail of Forces, Dipole Force Tensor and Elastic Binding Energy in α-Palladium Hydrides

Electronic Structure and Properties of Hydrogen in Metals, 1983

Research paper thumbnail of Structural, electronic and magnetic properties of (Z=Al, Ge, Sb) Heusler alloys

Research paper thumbnail of A simple tight-binding estimate of the dipole force tensor in α-palladium hydrides

Journal de Physique, 1982

Research paper thumbnail of Structural and Electronic Properties of Δ-NbN Single Crystal: First Principles Calculations

Hwang/Characterization, 2013

Research paper thumbnail of Electronic structure of hydrogen in nickel and its trapping by impurities

Journal of the Less Common Metals, 1987

ABSTRACT

Research paper thumbnail of Photon-induced L-shell x-ray intensity ratio for elements with 73 ⩽ Z ⩽ 83 in the energy range 17 ⩽ E ⩽ 47 keV

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1988

ABSTRACT The L-shell x-ray intensity ratios I(Lβ)/I(Lα) and I(Lγ)/I(Lα) for elements with 73 ⩾ Z ... more ABSTRACT The L-shell x-ray intensity ratios I(Lβ)/I(Lα) and I(Lγ)/I(Lα) for elements with 73 ⩾ Z ⩽ 83 have been measured at photon incident energies of 17.8, 25.8 and 46.9 keV. The emitted x-rays were measured with a Si(Li) detector system. The results for Re, Pt and Tl are being reported for the first time. A comparison is made of the experimental results with the calculated values obtained by using the theoretical x-ray emission rates, subshell ionisation cross sections, subshell fluorescence yields and Coster-Kronig transition probabilities. The experimental results are in reasonable agreement with the theoretical values.

Research paper thumbnail of Perturbed Infinite 3D Simple Cubic Network of Identical Capacitors

Acta Physica Polonica A, 2014

ABSTRACT The effective capacitance between the origin and any other lattice site, in an infinite ... more ABSTRACT The effective capacitance between the origin and any other lattice site, in an infinite 3D simple cubic network consisting of identical capacitors, is evaluated in terms of the Lattice Green’s Function (LGF) of the network. The perfect case is reviewed shortly, while the perturbed case (a capacitor is removed) is studied in two cases. Numerical values of the effective capacitance are presented and the asymptotic behavior is studied for the both cases.

Research paper thumbnail of Nonlinear Impurity for a square and BCC Lattices

The graph isomorphism problem is about deciding whether two graphs are actually the same even if ... more The graph isomorphism problem is about deciding whether two graphs are actually the same even if they look different in their graphical or adjacency matrix representation. The problem has important applications, especially in the field of computer science, chemistry and bio-...

Research paper thumbnail of Remarks on the lattice Green's Function for the anisotropic Face Centered Cubic Lattice

An expression for the Green's function (GF) of anisotropic face centered cubic lattice is eva... more An expression for the Green's function (GF) of anisotropic face centered cubic lattice is evaluated analytically and numerically for a single impurity problem. The density of states (DOS), phase shift and scattering cross section are expressed in terms of complete elliptic integrals of the first kink.

Research paper thumbnail of الفيزياء: المبادئ والتطبيقات

Research paper thumbnail of Ion beam induced mixing of the Cu/Si system using electrical resistivity and RBS measurements

Physica Status Solidi (a), 1988

ABSTRACT The ion-beam mixing of Cu thin films evaporated on silicon is investigated by measuring ... more ABSTRACT The ion-beam mixing of Cu thin films evaporated on silicon is investigated by measuring continuously the electrical resistivity of the samples during Kr ion irradiation. Rutherford backscattering spectra with 2.0 MeV He ions are measured after beam irradiation. The resistivity results exhibit a tendency toward a saturation process and allow the determination of the critical dose corresponding to the total mixing condition. The dependence of the normalized variation of the conductivity of intermixed atoms on the ion dose is deduced and compared with a semiempirical formula to explain the observed mixing kinetics. The above results are confirmed with the RBS measurements.Mittels kontinuierlicher Messung des elektrischen Widerstands der Proben während Kr-Ionenbestrahlung wird die Ionenstrahlmischung von dünnen auf Silizium aufgedampften Cu-Schichten untersucht. Rutherfordrückstreuspektren mit 2,0 MeV-He-Ionen werden nach der Bestrahlung gemessen. Die Widerstandsergebnisse zeigen eine Tendenz zu einem Sättigungsprozeß und erlauben die Bestimmung der kritischen Dosis entsprechend der Bedingung vollständiger Mischung. Die Abhängigkeit der normierten Variation der Leitfähigkeit von vermischten Atomen von der Ionendosis wird abgeleitet und mit einer halbempirischen Formel zur Erklärung der beobachteten Mischungskinetik verglichen. Die dargelegten Ergebnisse werden mit RBS-Messungen erhärtet.

Research paper thumbnail of A DFT study of substrate effect on the magnetism of V(001) surface

Surface Science, 2011

ABSTRACT The effect of isoelectric transition metals (TM) Nb and Ta on the magnetism of the V(001... more ABSTRACT The effect of isoelectric transition metals (TM) Nb and Ta on the magnetism of the V(001) surface is investigated from first principles using Density functional theory (DFT), with the generalized gradient approximation (GGA). Ferromagnetic (FM) moments of 2.5 μB and 2.2 μB are obtained for the relaxed surface V monolayer (ML) in the V/Nb(001) and the V/Ta(001) systems respectively, at T = 0 K. The values are almost twice of those obtained with Mo and W of group VIB and can be attributed to the comparatively smaller bandwidths of the substrates Nb and Ta. Small induced magnetic moments are present on the Nb and Ta interfacial layers, which are coupled anti-ferromagnetically with the V ML.

Research paper thumbnail of LMSES (LA CNRS 306)-Universitg Louis Pasteur-it, rue Blaise Pascal 67070 Strasbourg Cedex (France)

Research paper thumbnail of Magnetic order in ultrathin iron layers on Pd (001)

Research paper thumbnail of Antiferromagnetism of Cr sub n/Mn systems

Research paper thumbnail of All Rights R C1-L

Research paper thumbnail of Investigation of interlayer exchange coupling across metallic spacer layers