A5004045796- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Dielectric properties of ceramics
- Multiferroics and related materials
- Acoustic Wave Resonator Technologies
- Dielectric materials and actuators
- Glass properties and applications
- Solid-state spectroscopy and crystallography
- Synthesis and properties of polymers
- Crystal Structures and Properties
- Electronic and Structural Properties of Oxides
- Perovskite Materials and Applications
- Advancements in Battery Materials
- Photorefractive and Nonlinear Optics
- Advanced Battery Materials and Technologies
- Catalysis and Hydrodesulfurization Studies
- Organic and Molecular Conductors Research
- Nuclear materials and radiation effects
- Inorganic Fluorides and Related Compounds
- Magnetism in coordination complexes
- Luminescence Properties of Advanced Materials
- Nonlinear Optical Materials Research
- Nanotechnology research and applications
- Biopolymer Synthesis and Applications
- Nanocomposite Films for Food Packaging
Sidi Mohamed Ben Abdellah University
2016-2025
Agence pour le Développement et la Réhabilitation de la Ville de Fès
2003-2021
Medizinisches Versorgungszentrum Prof. Mathey, Prof. Schofer
2019
Laboratoire des signaux et systèmes
2013-2014
Université de Bordeaux
1987
Centre National de la Recherche Scientifique
1987
Electrical and dielectric properties for bulk ethylcarbazole‐terphenyl (PEcbz‐Ter) have been studied over frequency range 1 kHz–2 MHz temperature (R.T –120°C). The copolymer PEcbz‐Ter was characterised by using X‐ray diffraction. dependence of the constant () loss has investigated complex permittivity. decreases with increasing increases temperature. AC conductivity ( σ ac ) data were analysed universal power law. behaviour frequency. change exponent s in terms different conduction...
Solid solutions (1-x-y)(Na0.5Bi0.5)TiO3-xBaTiO3-y(K0.5 Bi0.5)TiO3 with (x (mol.%) = 0, 7 and 100); y(mol.%) 20 100) compositions have been prepared by a conventional solid-state reaction method, their structure, dielectric properties depolarization temperature examined. At room temperature, X-ray diffraction (XRD) patterns reveal that the crystalline structure of ceramics was perovskite. The morphotropic phase boundary (MPB) ternary system lying between rhombohedral (R3c) tetragonal (P4mm)...
Lead-free ceramic materials produced from bismuth sodium titanate (Na0.5Bi0.5TiO3, NBT)-bismuth potassium (K0.5Bi0.5TiO3, KBT) have been developed through a solid-state reaction technique. The structural, dielectric, and piezoelectric characteristics of the were analyzed. Based on XRD investigation, morphotropic phase boundary (MPB) was determined for composition (x (%) = 16 20). effects KBT NBT lattice examined using charge density distribution. Furthermore, dielectric properties indicated...
Solid solutions of (1-x)LaFeO₃-xBaTiO₃ with x = 0.49 were successfully synthesized via the conventional solid-state reaction method, focusing on systematic evaluation their structural, morphological, and dielectric properties under varying sintering conditions. X-ray diffraction (XRD) analysis coupled advanced Rietveld refinement techniques confirmed coexistence orthorhombic (Pbnm) tetragonal (P4mm) phases. The impact temperatures at 1200 °C, 1300 1400 °C was evaluated in detail, revealing a...
In this paper, we studied the effect of strontium doping on structural, microstructural, dielectric, and electrical properties Ba1-xSrxTiO3 (BSxT) ceramics prepared via sol-gel method, with x = 0.00 to 0.15. The results obtained from X-ray diffraction spectrum confirmed creation pure perovskite structure, peaks BSxT shifting toward bigger 2θ increasing Sr content. Scanning electron microscopy images show that grain size decreases An increase in content appears lower activation energy by...
The synthesis of novel Na1/2Er1/2Cu3Ti4O12 (NECTO) ceramics using conventional solid-state methods and their characterization as well dielectric properties were investigated at various temperatures sintering. SEM results revealed an increase in average grain size with sintering temperature. sintered NECTO sample 1080 °C exhibited good frequency stability a higher constant (ε′) about 6 × 103 1 kHz. It is found that the temperature correlates constant, it agrees IBLC model. Additionally,...
Different doping elements have been used to enhance the dielectric properties of BaTiO3 ceramic. In this work, effect substitution Ba by Bi in A site and Ti Fe B on structural, electrical Ba1-xBixTi0.80Fe0·20O3 ceramics at (x = 0.00, 0.05, 0.10 0.15) was investigated X-ray diffraction, Raman spectroscopy, Scanning Electron Microscopy (SEM), Mössbauer spectroscopy as well measurements. The Rietveld refinement results revealed that prepared compounds crystallize both tetragonal (P4mm)...
Description de l'evolution l'empilement cristallin sous contrainte. La temperature et la pression conduisent a une diminution des distances intra- interstrates dans le rapport 1:1,5. mise en ordre l'anion PF 6
The effect of the addition Ca on physicochemical properties PbTiO<sub>3</sub> (Pb<sub>1−x</sub>Ca<sub>x</sub>TiO<sub>3</sub>; 0 ≤ <italic>x</italic> 1) synthesized by a hydrothermal method at low temperatures.