A5057400468- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Semiconductor materials and interfaces
- Silicon and Solar Cell Technologies
- Silicon Nanostructures and Photoluminescence
- Semiconductor materials and devices
- Ion-surface interactions and analysis
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Thin-Film Transistor Technologies
- Metallic Glasses and Amorphous Alloys
- Magnetic Properties and Synthesis of Ferrites
- Magnetic properties of thin films
- Graphene research and applications
- Advanced Thermoelectric Materials and Devices
- Theoretical and Computational Physics
- Multiferroics and related materials
- Analytical Chemistry and Sensors
- Electromagnetic wave absorption materials
- Electrochemical Analysis and Applications
- Copper-based nanomaterials and applications
- Carbon Nanotubes in Composites
- Anodic Oxide Films and Nanostructures
- ZnO doping and properties
- Thermal properties of materials
Prince Sattam Bin Abdulaziz University
2024
University of Aveiro
2022
Universidade Federal do Rio Grande do Sul
2022
National University of Malaysia
2022
Universiti Sains Malaysia
2022
Universitat Jaume I
2022
Universiti Malaysia Perlis
2022
University of Balamand
2022
Al-Balqa Applied University
2011-2020
Rutherford Appleton Laboratory
2018
In this work, the temperature and frequency dependences of real part admittance [σ(f, T)] annealed nanocomposite films containing Co45 Fe45Zr10-based nanoparticles covered with native oxides embedded in a doped PbZrTiO3 ferroelectric matrix were studied. The nanocomposites studied deposited by ion sputtering complex target mixed Ar/O2 atmosphere followed 15-min annealing process (with steps 25 K) air range 398 K ≤ T 573 K. σ(f, T) samples was measured 77 < p 373 at frequencies 50 Hz f 1 MHz....
In this work, attention was focused on the inductive contribution to real part of admittance G(T, f) in (Fe0.45Co0.45Zr0.10)x(PZT)(1−x) nanocomposite films deposited a mixed argon–oxygen atmosphere. The observed G(x, f, T) dependences for dielectric side insulator–metal transition demonstrated negative capacitance (NC) effect that maximal nanocomposites with 0.40 < x 0.60, where metallic FeCoZr nanoparticles were totally oxidized. NC explained by specially developed model ac hopping...
Abstract Herein, we report the controlled formation of silica/magnetite core-shell nanostructures and their potential utilization as sensors for real-time detection heavy metals with different concentrations in aqueous solutions. Nickel ions were presented this work example contaminants. When coupled quartz crystal microbalance (QCM) technology, prepared was found to exhibit high sensitivity a prompt response toward presence nickel an environment. The robust structure silica core increased...
Abstract In this study, we utilize photometric and kinematic data from Gaia DR3 the ASteCA package to analyze sparsely studied open clusters, King 2 5. For 2, identify 340 probable members with membership probabilities exceeding 50%. Its mean proper motion components are determined as (μ α cos δ , μ ) = (−1.407 ± 0.008, −0.863 0.012) mas yr -1 its limiting radius is derived 6.94 +0.22 −1.06 arcminutes based on radial density profiles. The cluster has an estimated age of 4.80 0.30 Gyr, a...
The paper established that, the hopping mechanism of charge exchange for (FeCoZr)64.4(PZT)35.6 nanocomposite and additional polarization tested sample occurs. As frequency increases two areas where capacitance decreases can be observed. Correlation between conductivity increase decrease has been observed both stages their variability. Voltage resonance phenomenon studied material was zero crossing in dependence phase difference transition is accompanied with this phenomenon, which reflected...
We observed an inductive contribution to impedance in granular (Fe0.45Co0.45Zr0.10)x(Al2O3)(1-x) and (Fe0.45Co0.45Zr0.10)x(PZT)(1-x) nanocomposite films deposited Ar + O2 atmosphere. The with x » 0.30 (in dielectric regime) demonstrated negative capacitance effect which were explained by hopping conductance of electrons over FeCoZr nanoparticles covered complicated CoFe-oxides embedded into matrix. In particular, at the determined conditions such a structure resulted increase electron mean...
The temperature and frequency dependences of the admittance real part σ(T, f ) in granular (Fe 45 Co Zr 10 x (Al 2 O 3 100-x nanocomposite films around percolation threshold C were investigated.The behaviour vs. over ranges 77-300 K 50 Hz-1 MHz, respectively, displays predominance an activation (hopping) conductance mechanism for samples below a metallic one beyond determined as 54 ± at.%.The mean hopping range d nanoparticles diameter D was estimated at different phase content x.
We report the investigation of a real part admittance σ granular nanocomposites (Fe 0.45 Co Zr 0.10 ) x (Al 2 O 3 1-x with 0.30 < 0.70 in dielectric (hopping) regime.An analysis σ(T, f, x) dependences as-deposited and annealed films over temperature 77 K T 300 frequency 50 f 10 6 Hz ranges displayed predominance an activation conductance mechanism dσ/ dT > 0 for samples below percolation threshold C ≈ 0.76 ± 0.05.Based on earlier models hopping AC conductance, computer simulation coefficient...
In this paper the results of investigations electrical properties metaldielectric nanocomposites (FeCoZr)x(CaF2)100-x are presented.The samples with metallic phase content x = 45.7 at.% were produced by ion-beam sputtering method in pure argon atmosphere, and subsequently annealed at 398 K for 15 min.The measurements performed frequency range from 50 Hz to 1 MHz.The dependences angle θ, capacity Cp, conductivity σ dielectric loss factor tan δ measured seven dierent temperatures ranging 148...
The electrical behaviour of dielectric liquids is strongly influenced by the double layer at solid/liquid interfaces. When solid a metal, injection ions depends on structure this layer. A new method proposed which evidences presence such an insulator/liquid interface. liquid containing known amount electrolyte subjected to voltage step, electrodes being covered with polymer films. From shape transient currents, total charge displaced across gap measured, and corresponding zeta potential...