Abdelhakim Nafidi

Abdelhakim Nafidi

Université Ibn Zohr

H-index: 10

Africa-Morocco

Abdelhakim Nafidi Information

University

Université Ibn Zohr

Position

___

Citations(all)

463

Citations(since 2020)

204

Cited By

331

hIndex(all)

10

hIndex(since 2020)

7

i10Index(all)

13

i10Index(since 2020)

3

Email

University Profile Page

Université Ibn Zohr

Abdelhakim Nafidi Skills & Research Interests

condensed matter physics

Top articles of Abdelhakim Nafidi

Theoretical study of structural, electronic, electric and optical properties of PbTiO3 using DFT-LDA approach

In this work, we investigate the structural, electronic, electric and optical properties of tetragonal lead titanate (PbTiO3) using the local density approximation (LDA) within the density functional theory (DFT) as implemented in Quantum Espresso (QE). Our calculated values of the optimized lattice parameters agree well with experimental data as well as with those of other theoretical calculations. The results of electronic band structure, density of states DOS and pDOS confirm that the valence and conduction bands of PbTiO3 are mainly formed by O-2p and Ti-3d states respectively. It is found that the gap energy experiences an underestimation compared to the available experimental data but it is in good accordance with other theoretical findings. Furthermore, the calculated value of the spontaneous polarization and those of the refractive indices, for wavelengths ranging between 400 nm and 800 nm, are found to be …

Authors

S Amounas,A Hbab,H Chaib,T Ait-Taleb,A Nafidi

Journal

AIP Conference Proceedings

Published Date

2023/10/5

DFT based investigation of the structural and electronic properties of ferroelectric phase of lithium niobate

Lithium niobate (LiNbO3) is one of the most important ferroelectric oxides materials. It is frequently used in many technological applications due to its remarkable optical anisotropy, large spontaneous polarization and nonlinear optical activity. In this work, we theoretically investigate the structural and electronic properties of the ferroelectric phase of lithium niobate such as the lattice parameters, the band gap, and the total and partial densities of states by using various exchange-correlation functionals under the framework of the density functional theory (DFT) as implemented in Quantum Espresso. Our calculated values of the optimized lattice parameters are in a good agreement with the experimental values. In addition, the calculated values of the gap energy present an underestimation compared to the experimental data but they are in good agreement with other calculations based on the DFT. Moreover, the …

Authors

A Hbab,S Amounas,H Chaib,T Ait-Taleb,A Nafidi

Journal

AIP Conference Proceedings

Published Date

2023/10/5

Impact of Heat Treatments and Hole Density (p) on the Structural, Electrical, and Superconducting Properties of LnSrBaCu3O6+ z (Ln= Eu, Sm, Nd) Compounds

In this study, we thoroughly examined the impact of heat treatments and hole count (p) on the properties of LnSrBaCu3O6+z (Ln = Eu, Sm, Nd) compounds. We focused on preparation, X-ray diffraction with Rietveld refinement, AC susceptibility, DC resistivity measurements, and heat treatment effects. Two heat treatment types were applied: oxygen annealing [O] and argon annealing followed by oxygen annealing [AO]. As the rare earth Ln’s ionic radius increased, certain parameters notably changed. Specifically, c parameter, surface area S, and volume V increased, while critical temperature Tc and holes (p) in the CuO2 plane decreased. The evolution of these parameters with rare earth Ln’s ionic radius in [AO] heat treatment is linear. Regardless of the treatment, the structure is orthorhombic for Ln = Eu, tetragonal for Ln = Nd, orthorhombic for Ln = Sm [AO], and pseudo-tetragonal for Sm [O]. The highest critical temperature is reached with Ln = Eu (Tc [AO] = 87.1 K). Notably, for each sample, Tc [AO] surpasses Tc [O]. Observed data stems from factors including rare earth ionic size, improved cationic and oxygen chain order, holes count p in Cu(2)O2 planes, and in-phase purity of [AO] samples. Our research strives to clearly demonstrate that the density of holes (p) within the copper plane stands as a determinant impacting the structural, electrical, and superconducting properties of these samples. Meanwhile, the other aforementioned parameters contribute to shaping this density (p).

Authors

Mohammed Bellioua,Mohamed Id El Amel,Fatima Bouzit,Mohamed Errai,Driss Soubane,Aderrahim Ait Khlifa,Mohammed Khenfouch,Issam Mouhti,Ahmed Tirbiyine,Essediq Youssef El Yakoubi,Abdelhakim Nafidi

Journal

Communications and Network

Published Date

2023/9/27

Exploring the electronic, optical, and thermometric properties of novel AlCuX2 (X = S, Se, Te) semiconductors: a first-principles study

In the current study, we investigated the structural, electronic, optical, and thermoelectric properties of three chalcopyrite materials AlCuX2 (X = S, Se, and Te) employing the full-potential linearized augmented plane waves (FP-LAPW) within the density functional theory (DFT). The generalized gradient approach (GGA-PBE) and the modified Becke–Johnson exchange potential (mBJ-GGA) approximations were employed to calculate the exchange and correlation potentials. The stability of the studied compounds and their structural parameters was evaluated. Our findings revealed that these studied compounds exhibit a semiconductor character with a direct band gap. The two compounds AlCuTe2 and AlCuSe2 displayed excellent visible absorption with limited reflectivity. The optical characteristics of the AlCuTe2 compound better as compared to the AlCuS2 and the AlCuSe2 compounds, suggesting it a potential …

Authors

Merieme Benaadad,Banat Gul,Muhammad Salman Khan,Abdelhakim Nafidi

Journal

Journal of Materials Science

Published Date

2023/5

Optoelectronic Transport Properties of Nanostructured Multi-Quantum Well InAs/GaSb Type II LWIR and MWIR Detectors

We report in this study the optoelectronic properties of mid- and long-wave infrared type II multiple quantum wells (MQWs) of InAs(d1)/GaSb(d2) using our enhanced envelope function formalism at low temperature. We have investigated the band structure energy subbands and carrier effective mass m*/m0 of the MQWs in the growth direction and in-plane. The relationship between semiconductor-to-semimetal (SC–SM) transition and well thickness d1 were analyzed. Furthermore, we studied and interpreted the evolution of the photodetector parameters including fundamental band gap, corresponding cutoff wavelength λc and electron effective mass as a function of the well thickness d1, valence band offset Λ, ratio R = d1/d2 and temperature. We calculated the electronic transport parameters including transport scattering time, Fermi velocity and mean free path for the three investigated MQWs. The studied …

Authors

Merieme Benaadad,Abdelhakim Nafidi,Samir Melkoud,Driss Barkissy,Essediq Youssef El Yakoubi

Journal

Journal of Electronic Materials

Published Date

2022/12

Investigation of structural, optoelectronic and thermoelectric properties of GaCuX2 (X= S, Se and Te) chalcopyrites semiconductors using the accurate mBJ approach

Ternary chalcopyrites have recently been the focus of scientists due to their optoelectronic and thermoelectric application as solar energy converters, nonlinear optical devices and detectors. In the present study, we used the first principle calculations based on the density functional theory (DFT) to explore the structural, optoelectronic and thermoelectric properties of GaCuX2 (X = S, Se and Te). The electronic band structure, density of states and optical properties were investigated using the modified Becke Johnson (TB-mBJ) approximation. These materials were discovered to be direct band gap semiconductors in this study, which agrees well with previously reported results. When compared to GaCuS2 and GaCuTe2, GaCuSe2 has a smaller gap value, due to the lower chemical bonding nature of Ga and Se atoms. The density of states of these three ternary chalcopyrites, as well as their optical properties including …

Authors

Merieme Benaadad,Abdelhakim Nafidi,Samir Melkoud,Issam Mahraj,Mariyam Salmi

Journal

Physica B: Condensed Matter

Published Date

2022/10/1

Effect of wells thicknesses disorder on quantum magneto-transport properties in GaAs/AlxGa1-xAs multi-quantum wells near wavelength infrared detectors

We investigate theoretically, the GaAs/Al0.18Ga0.82As multi-quantum wells electronic band-structures and quantum magneto-transport properties at 1.6 ​K, using the envelope function with the effective mass formalism. The effect of well and barrier thicknesses on the band-structures and bandgap were studied. The bandgap decreases when the well thickness increases whereas an increase of barrier thickness leads to narrowing of sub-band width. The carrier’s effective masses were calculated and the electronic transport dimensionality was determinates through the density of states. The inter-plateau widths of transitions in the quantum Hall effect increases with increasing inter-layer tunneling and well thickness disorder. Our results allowed easer interpretation of quantum Hall effect measurements in the literature and are necessary for the design and engineering of multiple quantum wells infrared detectors.

Authors

Samir Melkoud,Abdelhakim Nafidi,Driss Barkissy

Journal

Micro and Nanostructures

Published Date

2022/3/1

Quantum magneto transport properties of nanostructure multi quantum wells short wave Infrared detectors

In this paper, we investigated the band structure and quantum magneto transport properties of the In 0.53 Ga 0.47 As (d 1= 100Å)/InP (d 2= 70Å) type I multi quantum wells (MQWs) at low temperature. These studies were based on the envelope function and effective mass formalisms. We calculated the effect of d 1, d 2, the band valence offset and temperature on the band gap and the cut-off wavelength of detection. The result of the computed density of states and the position of Fermi level indicate that this sample is quasi two-dimensional system with n-type conductivity. The calculated evolution of the cutoff wavelength with temperature predicts this MQWs can be used as a short-infrared detector. Furthermore, we interpreted theoretically the photoluminescence, the Shubnikov de Haas (SdH) and quantum Hall effects observed by Pusep et al.

Authors

Merieme Benaadad,Abdelhakim Nafidi,Samir Melkoud,Driss Barkissy,Nassima Benchtaber

Journal

Journal of Physics: Conference Series

Published Date

2021

First-principles investigations of structural, optoelectronic and thermoelectric properties of Cu-based chalcogenides compounds

The structural, electronic, optical and thermoelectric properties of copper-based ternary chalcogenides ACuSe2 (A = Sc, Y and La) were investigated within the framework of the density functional theory (DFT). The electronic band structures and density of states exhibit that ScCuSe2 and YCuSe2 have the indirect band gaps, while LaCuSe2 displays a direct band gap-type transition. The band structure calculations agree well with other results in the literature. The optical behavior of the studied materials was analyzed in terms of dielectric functions, refractive index, extinction coefficient, absorption coefficient, optical conductivity, reflectivity and energy loss factor. The refractive indices increase to the maximum values of 4.4, 4 and 4.1 at the short infrared and visible wavelengths for ScCuSe2, YCuSe2 and LaCuSe2, respectively. Then, they decrease to get a value below 1.0 at the UV wavelengths. Moreover, the …

Authors

Merieme Benaadad,Abdelhakim Nafidi,Samir Melkoud,Muhammad Salman Khan,Driss Soubane

Journal

Journal of Materials Science

Published Date

2021/10

Quantum magneto-transport properties of GaAs/AlxGa1-xAs Weakly coupled quantum wells for near wavelength infrared detection

We investigated here the GaAs(d1 = 184 Å)/Al0.18Ga0.82As (d2 = 42 Å) multiple quantum wells based on our enhanced numerical calculations in the envelope function formalism. We calculated the band structures and the effective mass mi* of charge carriers. When the well thickness d1 increases, the bandgap Eg decreases like m*. The calculated Fermi level energy and the density of states show n-type conductivity and a quasi-two-dimensional transport character. When the barrier thickness d2 increases the bandwidth decreases as a result of the weakening of interlayer tunnelling along the growth direction in the first Brillouin zone. We also interpreted theoretically the Shubnikov-de Haas and quantum Hall effects measurements reported by B. G. Tavares et al. These results are necessary for the design and engineering of multiple quantum wells infrared detectors.

Authors

Samir Melkoud,Abdelhakim Nafidi,Merieme Benaadad,Driss Soubane

Journal

Computational Condensed Matter

Published Date

2021/9/1

Long wavelength Infrared Detection, Bands Structure and effective mass in InAs/GaSb Nanostructure Superlattice

We have investigated in the bands structure and the effective mass, respectively, along the growth axis and in the plane of InAs (d1=48.5Å)/GaSb(d2=21.5Å) type II superlattice (SL), performed in the envelop function formalism. We studied the semiconductor to semimetal transition and the evolutions of the optical band gap, Eg(Γ), as a function of d1, the valence band offset Λ and the temperature. In the range of 4.2–300 K, the corresponding cutoff wavelength ranging from 7.9 to 12.6 µm, which demonstrates that this sample can be used as a long wavelength infrared detector. The position of the Fermi level, EF = 512 meV, and the computed density of state indicates that this sample is a quasi-two-dimensional system and exhibits n type conductivity. Further, we calculated the transport scattering time and the velocity of electrons on the Fermi surface. These results were compared and discussed with the available data …

Authors

Merieme Benaadad,Abdelhakim Nafidi,Samir Melkoud,Abderrazak Boutramine

Journal

E3S Web of Conferences

Published Date

2021

Correlation Between Bands Structure and Quantum Magneto Transport Properties in InAs/GaxIn1−xSb Type II Superlattice for Infrared Detection

We have used the envelope function formalism to investigate the bands structure of LWIR type II SL InAs (d1 = 2. 18d2)/In0.25Ga0.75Sb(d2 = 21.5 Å). Thus, we extracted optical and transport parameters as the band gap, cut off wavelength, carriers effective mass, Fermi level and the density of state. Our results show that the higher optical cut-off wavelength can be achieved with smaller layer thicknesses. The semiconductor-semi metal transition was studied as a function of temperature. Our results permit us the interpretations of Hall and Shubnikov-de Haas effects. These results are in agreement with experimental results in literature and a guide for engineering infrared detectors.

Authors

Nassima Benchtaber,Abdelhakim Nafidi,Driss Barkissy,Abderrezak Boutramine,Merieme Benaadad,Samir Melkoud,Es-Said Es-Salhi,Fatiha Chibane

Journal

Frontiers in Physics

Published Date

2020/3/18

Theoretical electronic band structures and transport in InAs/GaSb type II nanostructure superlattice for medium infrared detection

We report here the electronic band structure of nanostructure type II superlattice (SL) InAs(d1 = 21 Å)/GaSb(d2 = 24 Å) performed in the envelope function formalism. We calculated the energy E(d1), E(kz), E(kp) and the effective mass in the direction of growth kz and in plane kp of the SL. When the temperature increases, the band gap Eg decreases and the corresponding cutoff wavelength λc increases. We interpreted photoluminescence and transport measurements of Haugan et al. with an agreement in the calculated gaps. The computed density of states and Fermi energy position indicated that the sample is a p type semiconductor with a transition from bi-dimensional to tri-dimensional conductivity near 20 K. This sample is medium infrared detector (3.92 μm < λc < 5.92 μm) and a stable alternative for application in infrared optoelectronic devices. The electronic transport parameters calculated here …

Authors

Nassima Benchtaber,Abdelhakim Nafidi,Driss Barkissy,Abderrazak Boutramine,Merieme Benaadad,Samir Melkoud,Es-saïd Es-Salhi

Journal

Materials Today: Proceedings

Published Date

2020/1/1

Effects of isovalent substitutions and heat treatment on structural and superconducting properties of high-critical temperature superconductors

We have investigated the structural and superconducting properties Y0.5Ln0.5SrBaCu3O6+z of compounds (with Ln = rare earth = Eu, Sm and Nd) by X-ray diffraction with Rietveld refinement, resistivity and AC magnetic susceptibility measurements. Each sample was subject to two types of heat treatment: oxygen annealing [O] and argon annealing followed by oxygen annealing [AO]. For each ionic radius r of Ln, the [AO] treatment increases the orthorhombicity ε, Tc from 82.1 K [O] to 82.47 K [AO] for Y0.5Eu0.5SrBaCu3O6+z, from 80.98 K [O] to 82.02 K [AO] for Y0.5Sm0.5SrBaCu3O6+z and from 78.86 K [O] to 80.54 K [AO] for Y0.5Nd0.5SrBaCu3O6+z and decrease the distance d[Cu(1)-Sr/Ba]. For each r, in the normal state, the [AO] treatment reduced the linear resistivity parameters indicating a diminution of the interaction of carrier charges with phonons. There was a remarkable improvement in the …

Authors

Keltoum Khallouq,Abdelhakim Nafidi,Abdeljabar Aboulkassim,Essediq Youssef El Yakoubi,Es-saïd Es-Salhi

Journal

Materials Today: Proceedings

Published Date

2020/1/1

Abdelhakim Nafidi FAQs

What is Abdelhakim Nafidi's h-index at Université Ibn Zohr?

The h-index of Abdelhakim Nafidi has been 7 since 2020 and 10 in total.

What are Abdelhakim Nafidi's top articles?

The articles with the titles of

Theoretical study of structural, electronic, electric and optical properties of PbTiO3 using DFT-LDA approach

DFT based investigation of the structural and electronic properties of ferroelectric phase of lithium niobate

Impact of Heat Treatments and Hole Density (p) on the Structural, Electrical, and Superconducting Properties of LnSrBaCu3O6+ z (Ln= Eu, Sm, Nd) Compounds

Exploring the electronic, optical, and thermometric properties of novel AlCuX2 (X = S, Se, Te) semiconductors: a first-principles study

Optoelectronic Transport Properties of Nanostructured Multi-Quantum Well InAs/GaSb Type II LWIR and MWIR Detectors

Investigation of structural, optoelectronic and thermoelectric properties of GaCuX2 (X= S, Se and Te) chalcopyrites semiconductors using the accurate mBJ approach

Effect of wells thicknesses disorder on quantum magneto-transport properties in GaAs/AlxGa1-xAs multi-quantum wells near wavelength infrared detectors

Quantum magneto transport properties of nanostructure multi quantum wells short wave Infrared detectors

...

are the top articles of Abdelhakim Nafidi at Université Ibn Zohr.

What are Abdelhakim Nafidi's research interests?

The research interests of Abdelhakim Nafidi are: condensed matter physics

What is Abdelhakim Nafidi's total number of citations?

Abdelhakim Nafidi has 463 citations in total.

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