Publications by authors named "Abderrazek Oueslati"

A novel organic-inorganic material (CHN)ZnCl·2Cl was synthesized via a slow evaporation approach and subjected to extensive characterization. Techniques involving X-ray diffraction, SEM/EDX, Hirshfeld surface examination, IR/Raman spectroscopy, thermal behavior (TG/DTG/SDTA and DSC), and electric and dielectric studies were applied. Examination of the crystal structure reveals that the synthesized material adopts a monoclinic system, particularly belonging to the 2/ space group with unit cell parameters = 11.

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Perovskite materials have surged to the forefront of materials science, captivating researchers worldwide with their distinctive crystal lattice arrangement and remarkable optical, electric and dielectric attributes. The current study focuses on the development of a novel zero-dimensional (0D) Ge(II)-based hybrid perovskite, formulated as NH(CH)NHGeF, and synthesized through a gradual evaporation process conducted at room temperature. The crystal structure is characterized by an arrangement of organic cations and isolated octahedral [GeF] groups.

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A new double perovskite phase, Sr(SnSbIn)O, was successfully synthesized a solid-state reaction and comprehensively characterized using both experimental and theoretical techniques. Powder X-ray diffraction was used to determine the crystal structure, while scanning electron microscopy (SEM) revealed a high degree of densification and uniform grain distribution across the ceramic. Raman and Fourier-transform infrared (FTIR) absorption spectra of the powder present broad bands predominantly due to different stretching modes of the various SnO , InO and SbO octahedra in the region = 400-800 cm.

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Organic-inorganic hybrid materials have recently found a vast variety of applications in the fields of energy storage and microelectronics due to their outstanding electric and dielectric characteristics, including high dielectric constant, low conductivity, and low dielectric loss. However, despite the promising properties of these materials, there remains a need to explore novel compounds with improved performance for practical applications. In this research paper, the focus is on addressing this scientific challenge by synthesizing and characterizing the new-centrosymmetric (CHN)[CdBr] crystal.

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Colorless single crystals of the zero-dimensional hybrid compound, (CHN)[PdCl]·2HO were acquired through the slow evaporation technique. The crystal structure was explored using SC-XRD, which demonstrates that the material crystallizes in the centrosymmetric space group 1̄ of the triclinic system. The density functional theory method at the B3LYP/Lan2mb basis set level was employed to establish the optimized geometry and vibrational frequencies of the title compound.

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The frequency and temperature-related dielectric relaxation and electrical conduction mechanisms in potassium-doped CaFeO oxide ceramic were investigated in this study throughout a temperature range of 313-673 K. The synthesis of the KCaFeO compound was accomplished through a solid-state reaction route. The X-ray diffraction pattern at room temperature confirmed that the ceramic KCaFeO crystallizes in the orthorhombic system with the space group.

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A novel semiconducting Ni(II)-based hybrid material with the formula (CHN) NiCl, which exhibits interesting optical and electrical properties, is reported. The crystal structure was investigated using SCXRD, whereas physical properties were studied by means of thermal analysis, Ft-Infrared, optical, and electrical measurements. Its crystal packing is formed through organic rings surrounded by inorganic [NiCl] tetrahedral and stacked along the -crystallographic axis.

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There has been a lot of interest in the development of a novel hybrid material based on mercury that has fascinating structural properties. In this paper, single crystals of [CHNO]HgBr was successfully synthesized by the slow evaporation method at room temperature. In fact, the latter crystallizes in the orthorhombic system ( space group) with cell parameters = 20.

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In the present investigation, a new hybrid crystal, with the formula [(CH)P]CdCl has been synthesized by the slow evaporation method at room temperature. It was characterized by X-ray diffraction (XRD), Hirshfeld surface, differential scanning calorimetry (DSC), optical measurement and complex impedance. Single crystal X-ray diffraction structural analysis revealed that the title compound crystallizes in the triclinic system with space group 1̄ and cell parameters: = 11.

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The development of multifunctional materials is an exceptional research area, which is aimed at enhancing the versatility of materials according to their wide fields of application. Special interest was devoted here to lithium (Li)-doped orthoniobate ANbO (A = Mn), in particular, the new material LiMnNbO. This compound was successfully synthesized by a solid-state method and characterized using various techniques, including X-ray diffraction (XRD), which confirmed the successful formation of an ABO oxide with an orthorhombic structure and the space group.

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A NaCePO compound was successfully synthesized by a high-temperature reaction with the solid-state method. Analyzing the XRD pattern, of the studied compound, confirms the orthorhombic phase with the space group. The examination of SEM images reveals that the majority of grains are around 500 to 900 nm with a uniform distribution.

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Along with morphological and structural studies, the temperature and frequency dependence of the electrical and dielectric properties of the CHNHHgCl (MATM) compound was investigated and analyzed. SEM/EDS and XRPD analyses proved the purity, composition, and perovskite structure of the MATM. DSC analysis reveals the existence of an order-disorder phase transition of a first-order type at about 342 ± 2 K and 320 ± 1 K (heating and cooling, respectively), attributed to the disorder of [CHNH] ions.

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Ferrite compounds have recently attracted significant interest because of their multifunctional properties. This work investigates the optical, magnetic, and dielectric properties of a LiMnFeO ferrite prepared by a solid-state reaction. Raman spectroscopy analysis substantiated the presence of the 5 active modes representing the vibration of the oxygen anion at both tetrahedral and octahedral sites.

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The development of multifunctional materials is an exceptional research area, which is aimed at enhancing the versatility of materials in various applications. In this context, the exceptional properties of ferrite materials have attracted the attention of researchers. For this reason, we synthesized LiMnFeO sintered at a temperature of 1100 °C.

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In this paper, nanoparticles of ( = 0.05 and = 0.1) were synthesized by the sol-gel auto-combustion method and characterized by various techniques.

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The alkylammonium halogenoferrate families are subjected to diverse studies according to their wide field application. However, these compounds show various transitions depending on the preparation process. In this paper, the [(CH)N]FeCl compound was successfully synthesized using a slow evaporation solution growth method at room temperature.

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