A5012013516- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Dielectric properties of ceramics
- Magnetic and transport properties of perovskites and related materials
- Crystal Structures and Properties
- Advanced Condensed Matter Physics
- Dielectric materials and actuators
- Glass properties and applications
- X-ray Diffraction in Crystallography
- Acoustic Wave Resonator Technologies
- ZnO doping and properties
- Chemical Synthesis and Characterization
- Perovskite Materials and Applications
- Crystallization and Solubility Studies
- Luminescence Properties of Advanced Materials
- Polyoxometalates: Synthesis and Applications
- TiO2 Photocatalysis and Solar Cells
- Conducting polymers and applications
- Electronic and Structural Properties of Oxides
- Solid-state spectroscopy and crystallography
- Phase-change materials and chalcogenides
- Magnetic properties of thin films
- Advanced Photocatalysis Techniques
- Advanced Sensor and Energy Harvesting Materials
Université de Picardie Jules Verne
2016-2025
Laboratoire de physique de la matière condensée
2016-2025
Mohamed I University
2022-2024
Laboratoire de Physique Théorique de la Matière Condensée
2016-2023
Universidad de Los Andes
2022
Universidad de Los Andes
2022
Centre Hospitalier Universitaire d’Oujda
2022
Universidad Católica de Honduras Nuestra Señora Reina de la Paz
2022
St. Vincent Charity Hospital
2022
Northeast Ohio Medical University
2022
The electrocaloric effect was investigated in lead-free Zr doped Ba0.8Ca0.2(ZrxTi1−x)O3 (BCTZ) ceramics synthesized by a conventional sintering process. Room-temperature x-ray diffraction analysis showed that the tetragonal structure is obtained BCTZ for x ≤ 0.08 and pseudo cubic phase > 0.08. dielectric spectroscopy calorimetry revealed Curie temperature decreases as consequence of doping exhibits first order ferroelectric transition. determined calculation change (ΔT) using Maxwell...
The results of structural studies pure-phase perovskite thin films BiFeO3–10% RMnO3 (R=La, Eu, Gd, Tb, and Dy) are presented. Raman scattering show line broadening similar to what is reported for RMnO3; they were attributed Jahn–Teller distortion orthorhombic change. Evidence an anomaly the at GdMnO3 could be obtained. Interestingly addition leads a substantial increase in magnetization, combined with moderate ferroelectric polarization. All other compositions characterized by higher...
Abstract A new material, tin antimony sulfide (SnSb 2 S 5 ) thin films, considering different thicknesses (200 nm, 312 nm and 431 nm), were obtained by thermal evaporation onto a glass substrate. The films studied electrically ( I – V dependence) optically to highlight their properties as photoanodes in film photovoltaic devices. characteristic curves showed n-type semiconductor samples with an electrical conductivity of 10 −3 (ohm cm) −1 under white light excitation. values the absorption...
Structural and functional properties of multiferroic BiFeO3 are currently under debate. We utilized Raman spectroscopy to characterize the structural pure up 10mol% LaMnO3-doped polycrystalline thin films. All films were identified as phase-pure perovskite using x-ray diffraction (XRD). Although XRD has insufficient sensitivity for detailed film analysis, experiments showed that structure is best described monoclinic, doping with LaMnO3 causes substantial modifications, namely, Jahn–Teller...
Polycrystalline lead-free Sodium Bismuth Titanate (NBT) ferroelectric ceramics doped with rare earth (RE) element are prepared using solid state reaction method. Optical, ferroelectric, and electrocaloric properties were investigated. The introduction of RE3+ ions in the NBT host lattice shows different light emissions over wavelength range from visible to near infrared region. P-E hysteresis loops exhibit an antiferroelectric-like character room temperature indicating possible existence a...
The beneficial effects of lanthanide incorporation into 0.94Na0.5Bi0.5TiO3-0.06BaTiO3 (BNT-BT) matrix on its functional properties were investigated. conventional solid-state method was used for synthesizing samples. structural refinement revealed that all samples crystallized in R3c rhombohedral symmetry. Raman spectroscopy study carried out using green laser excitation and no clear perceptible variation frequency is observed. Dielectric measurements unveiled the introduction rare earth...
Magnetoelectric composites integrate the coupling between magnetic and piezoelectric materials to create new functionalities for potential technological applications. This is typically achieved through exchange of magnetic, electric, or...
The present study investigates the effect of manganese incorporation on structural, dielectric, and waste bioconversion LiTaO3 ferroelectric material. Conventional solid-state synthesis techniques were utilized to produce powder samples, which subsequently analyzed using room-temperature X-ray diffraction (XRD) for phase identification. analysis revealed that material forms a continuous solid solution within composition range 0 25 mol% (Mn), exhibiting R3c-Rombohedral symmetry. Thermal...
This study details the manufacture of vanadium-doped ZnS thin films via a cost-effective spray pyrolysis technique at varying concentrations vanadium (4, 8, and 12 wt.%). The XRD data demonstrate hexagonal structure layers. analysis their structural properties indicates that crystallite size (D) decreased as concentration rose. strain dislocation density analyzed were enhanced by increasing content from 4 to wt.%. linear optical results revealed refractive index values improved 2.31 3.49 in...
Abstract TiO 2 Ag‐nanocomposites exhibit various desirable properties that make them suitable for a variety of applications, example in photocatalysis and as bactericidal coatings. In this work, new method processing Ag nanocomposites is presented. The nanocomposite films are fabricated from one precursor solution with high silver loading up to 50%. resulting microstructure consisting x O largely XRD‐amorphous matrix containing brookite nanocrystals. This specific absorbs the visible range...