M. BLIZAK Salah

Prof

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Department

Departement of Physics

Research Interests

The Physics of Nanomagnetic Materials and Devices

Contact Info

University of M'Sila, Algeria

Email : salah.blizak@univ-msila.dz

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Recent Publications

2024-06-05

Review on Nanomagnetic Materials: Properties, Methods and Application

Review on Nanomagnetic Materials: Properties, Methods, and Applications
Salah Blizak Department of physics, Faculty of sciences, University Mohamed Boudiaf of M'Sila, Algeria
Salah.blizak@univ-msila.dz
Abstract: Nanomagnetic materials have emerged as a focal point of interdisciplinary research due to their unique magnetic properties and diverse applications across various fields. This review provides a comprehensive overview of nanomagnetic materials, encompassing their fundamental properties, synthesis methods, and practical applications. The intrinsic characteristics of these materials, such as high surface-to-volume ratios, superparamagnetism, and size dependent magnetic behavior, are discussed in detail. Various synthesis techniques, including chemical vapor deposition, sol-gel processes, electrodeposition, and ball milling, are critically analyzed with respect to their advantages, limitations, and scalability. Furthermore, the review highlights the wide-ranging applications of nanomagnetic materials in data storage, biomedicine (e.g., drug delivery, hyperthermia, and imaging), catalysis, environmental remediation, and energy conversion/storage systems. Challenges associated with the stability, toxicity, and large-scale production of these materials are also addressed, along with potential strategies to overcome them. Finally, this review concludes by outlining future research directions aimed at advancing the design, fabrication, and utilization of nanomagnetic materials for emerging technologies.
Keywords : Nanomagnetic materials, magnetic properties, superparamagnetism, Nanomagnetic applications
Citation

M. BLIZAK Salah, (2024-06-05), "Review on Nanomagnetic Materials: Properties, Methods and Application", [national] National Seminar on Nanomaterials: Synthesis and Applications , University of Boumerdes (Algeria)

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2024-05-29

Synthesis of NiO nanoparticles by the Pechini sol-gel method

Nickel oxide (NiO) nanoparticles have attracted considerable attention due to
their remarkable photocatalytic properties, particularly in the field of environmental
remediation and water purification. These nanoparticles can catalyse oxidation reactions to
degrade pollutants and exhibit antibacterial properties, thus contributing to water disinfection.
This study focuses on the synthesis of NiO nanoparticles using the Pechini method, a versatile
technique developed and patented by Mario P. Pechini in 1967. Nickel acetate was used as a
precursor, followed by a thermal treatment at 450°C for 2 hours. The structural properties of
the particles were characterised by X-ray diffraction (XRD). The photocatalytic activity of the
NiO nanoparticles was evaluated by assessing the degradation of methylene blue under UV
irradiation. The XRD results showed that the nanoparticles synthesised by the Pechini method
exhibited superior homogeneity and crystallinity. The increased crystallite size contributed to
the photocatalytic efficiency of the NiO nanoparticles, as it can minimise carrier
recombination and increase the active surface area for photocatalytic reactions. The Pechini
method stands out as a valuable approach for the synthesis of advanced materials, offering
exceptional homogeneity, reduced processing temperatures and the ability to produce
nanomaterial while maintaining economic viability.
Key words: NiO nanoparticles, Pechini method, photocatalysis
Citation

M. BLIZAK Salah, Blizak Meriem Djanette, , (2024-05-29), "Synthesis of NiO nanoparticles by the Pechini sol-gel method", [international] The 3rd edition of the international conference on materials science and engineering and their impact on the environment , Sidi Bel-Abbés

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2023-11-19

Proton radiation effect on a titaniferous ceramic, intended for the confinement of Sr and Cs

Proton radiation effect on a titaniferous ceramic, intended for the confinement of Sr and Cs
MAACHOU Aicha Nuclear Research Center of Algiers, 2 Boulevard Frantz Fanon, P.O. Box: 399, Alger-RP, 16000, Algiers, Algeria
Salah Blizak Department of physics, Faculty of sciences, University Mohamed Boudiaf of M'Sila, Algeria
Nour El Hayet Kamel Retired from the Nuclear Research Center of Algiers, Co-supervisor of the Thesis, and Initiator of the Research Topic
Dalila Moudir Nuclear Research Center of Algiers, 2 Boulevard Frantz Fanon, P.O. Box: 399, Alger-RP, 16000, Algiers, Algeria



Abstract: Titaniferous ceramics have emerged as promising materials for the confinement of radioactive isotopes, particularly strontium (Sr) and cesium (Cs), due to their high chemical stability and resistance to radiation-induced degradation. This study investigates the effects of proton irradiation on the structural integrity and phase stability of a titaniferous ceramic matrix designed for the immobilization of Sr and Cs. Samples were subjected to controlled proton radiation to simulate space and nuclear waste storage conditions, and their microstructural and chemical properties were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectroscopy. The results indicate that proton irradiation induces defect formation and slight structural modifications, but the ceramic retains its primary phase stability and confinement efficiency. These findings provide valuable insights into the long-term durability of titaniferous ceramics in radiation-intensive environments, supporting their application in nuclear waste management and space exploration.
Citation

M. BLIZAK Salah, MAAVHOU Aicha, Nour El Hayet Kamel, Dalila Moudir, , (2023-11-19), "Proton radiation effect on a titaniferous ceramic, intended for the confinement of Sr and Cs", [national] The 1st national seminar on nuclear science and technology , CRND-Draria-Algiers

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2022-11-21

Gamma radiation effect on a murataite ceramic doped with Sr and Cs

This study investigates the influence of gamma radiation, emitted by a Cobalt-60 source, on the structural modifications of a polysomatic ceramic of the Murataite type, intended for the containment of radioactive waste. The matrix is doped with Sr and Cs to simulate both radioactive alkaline and alkaline-earth isotopes. Samples are irradiated with a total dose of 105 Gy. After irradiation, the Archimedes density increases by 9.80% and 10.61% for undoped and Sr-doped ceramics, respectively. However, it decreases by 3.05% and 3.65% for Cs-doped ceramics and Sr-Cs co-doped ceramics, respectively. All measured values are below 4 g/cm3. For all materials, the main XRD identified phase is 5M Murataite. After irradiation, this phase decreases significantly for both Cs and (Sr,Cs) doped materials, revealing that the particles movements under irradiation favours Cs and Sr-Cs hosting in the Zincohoegbomite secondary formed phase, which growth significantly after irradiation. The SEM observations reveal the crystalline grains morphological features, with few micrometers’ sizes. The ceramics’ Vickers microhardness is not affected and ranges between 410 and 646 HV. In conclusion, both the reference material and Sr-Mur material composition are the optimum chemical composition and give the optimum murataites’ phase content after irradiation.
Citation

M. BLIZAK Salah, Aicha Maachou, Nour El Hayet Kamel, Dalila Moudir, Badis Rahal, Ali Sari, Yasmina Mouheb, Soumia Kamariz, , (2022-11-21), "Gamma radiation effect on a murataite ceramic doped with Sr and Cs", [international] 3rd International Conference on Radiations and Applications , CRNA-Algiers

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2022-01-18

Modeling and Simulation of Magnons Scattering Across Shear Spins in Multilayered Ferromagnetic Slabs

In this work, we introduce a computer model and theoretical approach based on the matching technique to investigate the spin precession and the magnetic properties of an ordered magnetic interface joining two ferromagnetic multilayers of type AB, made of 10 spin slabs, obtained by alternative two spin layers A and B. We simulate, particularly, the coherent magnon transmission through spins’ interface, in multilayered thin films, obtained by shearing a part of the film from the other at an angle of 30∘. The individual and total transmittance of bulk magnons of the thin film, scattering coherently at the shearing interface zone and the localized magnonic spin states, are calculated and analyzed. The transmission and reflection spin modes are derived as elements of a Landauer–Büttiker type scattering matrix. The results highlight the localized spin states on the interface shear domain and their interactions with incident magnons. The evolutions of the magnonic spectra can be presented for arbitrary directions of the incident magnons on the boundary zone, for all accessible frequencies in the propagating bands as well as for the magnetic exchange coupling between each spin A(B) and its adjacent sites and their spin intensity. The results demonstrate the dependence of the magnonic spectra for the perfect multilayered films and at the inhomogeneous domain of the interface shear. The analysis of the spectra illustrates the fluctuations, related to Fano resonances, due to the coupling between travelling magnons and the localized modes in the shear interface domain. The calculated spectra could yield useful information concerning the magnetic parameters of such interface slabs in multilayered films.
Citation

M. BLIZAK Salah, Leila Ferrah, Boualem Bourahla, , (2022-01-18), "Modeling and Simulation of Magnons Scattering Across Shear Spins in Multilayered Ferromagnetic Slabs", [national] World Scientific Publishing Company , SPIN

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2021-06-05

NiO thin films for environmental photocatalytic applications: a review

Nickel oxide (NiO) thin film is metal oxide that has attracted much attention in recent years due to its environment friendliness. Like all metallic oxides semiconductors, thin films, NiO is gaining more and more attention as a promising photo-catalyst to replace powder catalysts, which are difficult in recycling. This paper summarized the photocatalytic activity of metallic oxides thin films. Furthermore, the results of several studies on the efficient photo-catalyst of NiO thin films and its components have also been shown. This review will be useful to researcher’s investigate non-toxic materials, with low production cost and high efficiency in the field of environmental protection.
Citation

M. BLIZAK Salah, Djanette Blizak, Samia Remli, Ouhiba Bouchenak, Karima Yahiaoui, , (2021-06-05), "NiO thin films for environmental photocatalytic applications: a review", [national] Algerian Journal of Environmental Science and Technology , University of Boumerdes

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2020-08-18

Students’ Perceptions Regarding the Abrupt Transition to Online Learning During the COVID-19 Pandemic: Case of Faculty of Chemistry and Hydrocarbons at the University of Boumerdes—Algeria

In recent months, universities around the world have been forced to cancel courses and close their doors due to the growing coronavirus epidemic. Following the government’s precautions, Algerian students were bound to quarantine regulations for their safety. Thus, they unexpectedly switched to online learning instead of face-to-face learning. Our objective of this exploratory study is to investigate the perceptions of Algerian university students regarding the abrupt transition to online learning amid the COVID-19 pandemic. To achieve this goal, an online survey with closed and open-ended questions was conducted among 380 students from the faculty of chemistry and hydrocarbons (FCH) at the University of Boumerdes—Algeria. The results showed that students have a negative perception of online learning. They are reluctant about this new digital pedagogy and prefer the traditional way of teaching to online teaching during the coronavirus pandemic.
Citation

M. BLIZAK Salah, Djanette Blizak, Ouahiba Bouchenak, Karima Yahiaoui, , (2020-08-18), "Students’ Perceptions Regarding the Abrupt Transition to Online Learning During the COVID-19 Pandemic: Case of Faculty of Chemistry and Hydrocarbons at the University of Boumerdes—Algeria", [national] Journal of Chemical Education , American Chemical Society

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2020-07-22

Magnetic properties of ultra-thin (Fe, Co) films coupled by Ir(001) spacers

We report on the magnetic properties of Fe1-xCox monolayers separated by Ir films ofvariable thickness, investigated using the full-potential linearized augmented plane-wave method based on the density functional theory. The interlayer exchange coupling can be used to mediate an exchange field between the layers, showing strong oscillations between antiferromagnetic and ferromagnetic coupling in terms of the Ir spacer thickness. For thin films (less than four Ir layers) a strong dependence on the chemical composition of the magnetic layers can be observed. We study also the magnetic anisotropy and the sensitivity of the in-plane exchange parameters of the magnetic layers to exchange coupling through the Ir spacer.
Citation

M. BLIZAK Salah, Aboubakr Seddik Kebaili, Gustav Bihlmayer, Stefan Blügel, , (2020-07-22), "Magnetic properties of ultra-thin (Fe, Co) films coupled by Ir(001) spacers", [national] Physica B: Condensed Matter , Elsevier Publishing company

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2015-01-09

Interlayer exchange coupling between FeCo and Co ultrathin films through Rh(001) spacers

Using spin density functional theory (SDFT) calculations, we have studied the magnetic states, including collinear and noncollinear magnetic interlayer coupling, of Fe1−x Cox ultrathin films sandwiching Rh(001) layers. We found very large values for the interlayer exchange coupling (IEC) in Co/Rhn/Co or (FeCo)m/Rhn/Co structures as compared to, e.g., Ag or Au spacer layers. The IEC oscillates with the Rh spacer thickness showing a transition between strong antiferromagnetic and ferromagnetic coupling between five- and seven-layer thickness of the Rh film. Moreover, depending on the thickness of the FeCo film, a reorientation transition between in-plane and outof-plane easy axis was found when spin-orbit coupling is considered in the calculations. This result suggests that, for specific arrangements such as (FeCo)2/Rh5/Co structures, a competition between IEC and magnetic anisotropy of coupled films may result in noncollinear ordering. This possibility was studied with constrained, noncollinear SDFT calculations and the results were mapped onto a classical spin model to explore the richness of spin structures that can arise in these multilayer systems.
Citation

M. BLIZAK Salah, Gustav Bihlmayer, Stefan Blügel, Seddik El Hak Abaidia, , (2015-01-09), "Interlayer exchange coupling between FeCo and Co ultrathin films through Rh(001) spacers", [national] PHYSICAL REVIEW B , American Physical Society

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2012-09-28

Ab initio investigations of magnetic properties of FeCo monolayer alloy films on Rh(001)

The objective of this work is to employ spin-polarized density functional theory (sDFT) calculations for the exploration of ultrathin magnetic films with large magnetic moments and a strong perpendicular anisotropy. Monolayer films of Fe1−xCox (with x = 0, 0.25, 0.5, 0.75, and 1) on Rh(001) were addressed to study their magnetic properties using the all-electron full-potential linearized augmented plane wave (FLAPW) method in film geometry. We studied the magnetic order of these films including structural relaxations of the topmost layers. Fe1−xCox monolayer films were found to be ferromagnetic (FM) in a broad range of Co content x with a maximum magnetic moment of 2.8 μB and of an out-of-plane magneto-crystalline anisotropy of 0.25 meV per magnetic atom at x = 0.5. The sDFT results were mapped onto a classical Heisenberg model, demonstrating FM Fe-Co and Co-Co couplings, while the Fe-Fe interaction is antiferromagnetic on Rh(001). The ordering temperature of the FeCo film was estimated to be well above room temperature (482 K).
Citation

M. BLIZAK Salah, Gustav Bihlmayer, Stefan Blügel, , (2012-09-28), "Ab initio investigations of magnetic properties of FeCo monolayer alloy films on Rh(001)", [national] PHYSICAL REVIEW B , American Physical Society

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