Structure and dielectric properties of Dy-BST/PVDF nanocomposites

Abomostafa, H. M.; Abouhaswa, A.S.; El-Komy, G. M.; Mansour, Diaa‐Eldin A.; Turky, Gamal

doi:10.1007/s10854-023-10253-9

Cited by 8 publications

(4 citation statements)

References 55 publications

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“…This was because the nanoparticles started to clump together at the boundaries between grains, leading to the formation of structural defects. These defects caused the accumulation of charge carriers at the interfaces, as seen in FESEM investigation figure 3(d) resulting in a decrease in carrier mobility and dipolar orientations when an external field was applied; consequently, the polarization decreased [23,40].…”

Section: Dielectric Propertiesmentioning

confidence: 93%

“…The experimental methodology was elucidated based on the prior research [22]. The dielectric characteristics were assessed using a high-resolution alpha analyzer within a frequency range of 10 -1 to 10 6 Hz, utilizing a Novocontrol GmbH instrument, as elaborated in earlier research [23]. 222), (400), ( 422), (511), and (440), indicate cubic spinel structure figure 1(a) [24].…”

Section: Characterization and Measurementsmentioning

confidence: 99%

“…Calculating the refractive index (n) is essential in the design of optical devices and optical communication systems. The refractive index (n) is determined by analyzing the reflectance (R) spectra using equation (3) [23].…”

Section: Optical Propertiesmentioning

confidence: 99%

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Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Alzahrani,

Abulyazied,

Abomostafa

2024

Phys. Scr.

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This study employed the sol gel auto-combustion approach to synthesize Mg0.5Ni0.5Fe2O4 spinel ferrite nanoparticles. Additionally, the casting method was used to fabricate Mg0.5Ni0.5Fe2O4/PMMA nanocomposite polymer films. The structural properties were analyzed by the utilization of x-ray diffraction pattern (XRD), high resolution transmission electron microscope (HRTEM), and field emission scanning electron microscope (FESEM). The UV-visible spectrophotometer examination was used to evaluate the optical properties of the produced nanocomposite films, such as absorbance, transmittance, indirect energy band gap, Urbach energy, excitation coefficient, and refractive index. Two indirect optical energy gaps are calculated, whereas they decreased from 4.56 eV to 4.33 eV, and from 4.04 eV to 3.01 eV, while the Urbach energy increased from 0.304 eV to 0.524 eV as the nanofillers increased from 0 to 4 wt%. An investigation was conducted to examine the impact of nanoparticle doping on the dielectric constant, electric modulus, and ac conductivity. The Mg0.5Ni0.5Fe2O4/PMMA nanocomposite films demonstrate higher permittivity and ac conductivity and a lower dissipation factor and electric modulus compared to pure PMMA. The dielectric permittivity (ε′) increased from 2.76 to 3.43 at a constant frequency 100 Hz up to 2 wt.% of Mg0.5Ni0.5Fe2O4 then decreased to 2.41 while the dissipation factor tan(δ) decreased from 0.1 to 0.046 at the same frequency. The nanocomposite films are well-suited for utilization in CUT-OFF selective laser filters, solar cells, energy storage devices, and other applications in related industries.

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Section: Dielectric Propertiesmentioning

confidence: 93%

Section: Characterization and Measurementsmentioning

confidence: 99%

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Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Alzahrani,

Abulyazied,

Abomostafa

2024

Phys. Scr.

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“…Polymer-based composites with high relative permittivity and low dielectric loss play an important role in many fields; electroactive materials, capacitor fabrication, and cables due to their excellent performance in high-power electric energy storage under uniform electric fields [1][2][3][4]. It is important to develop functional composites with high dielectric constant and dielectric breakdown strength for electric energy storage devices and capacitors to get correspondingly high energy density.…”

Section: Introductionmentioning

confidence: 99%

Investigation of structure, thermal and dielectric study of Dy_0.05Ba_0.7Sr_0.25TiO₃/polystyrene nanocomposites

et al. 2023

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The present study aims to fabricate ceramic/polymer nanocomposite films for use in energy storage devices. To achieve this, Dy0.05Ba0.7Sr0.25TiO3 (Dy-BST) nanoparticles with a high permittivity, sintered at 1300°C for 3h, were prepared using the conventional solid-state method. Subsequently, different volume fractions of Dy-BST (0, 5, 10, 15, and 20) in nanoscale (8–18 nm), were introduced into the polystyrene matrix to produce nanocomposites with enhanced dielectric properties. The crystal structure, morphology, surface morphology, thermal properties, electrical properties, and breakdown voltage of the prepared composites were investigated using different techniques. XRD study indicated that crystallinity of composites relatively increases with the ceramic content increase. The introduction of Dy-BST into the polymer matrix enhanced the thermal stability as well as limited the thermal degradation of the Dy-BST/PS nanocomposite films. Also, it enhanced the dielectric properties of these composites, i.e. ε' increased from 2.15 to ~10 while tanδ decreased from 0.0015 to 0.0011. Also, it is found to be beneficial to improve the breakdown strength of composite films. Basically, the prepared BST/PS nanocomposite films could be beneficial for energy storage devices, and electrical insulating applications.

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Exploring the interplay of structural, photoluminescence, mechanical and dielectric characteristics for Er2O3/barium titanate borate glasses

Alsharif,

Abomostafa,

Abulyazied

et al. 2024

Opt Quant Electron

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Structure and dielectric properties of Dy-BST/PVDF nanocomposites

Cited by 8 publications

References 55 publications

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Investigation of structure, thermal and dielectric study of Dy_0.05Ba_0.7Sr_0.25TiO₃/polystyrene nanocomposites

Exploring the interplay of structural, photoluminescence, mechanical and dielectric characteristics for Er2O3/barium titanate borate glasses

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Structure and dielectric properties of Dy-BST/PVDF nanocomposites

Cited by 8 publications

References 55 publications

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg0.5Ni0.5Fe2O4: structural, optical, and dielectric properties

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg0.5Ni0.5Fe2O4: structural, optical, and dielectric properties

Investigation of structure, thermal and dielectric study of Dy0.05Ba0.7Sr0.25TiO3/polystyrene nanocomposites

Exploring the interplay of structural, photoluminescence, mechanical and dielectric characteristics for Er2O3/barium titanate borate glasses

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Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Facile design of a low-cost laser CUT-OFF filter with PMMA polymer nanocomposite doped with Mg_0.5Ni_0.5Fe₂O₄: structural, optical, and dielectric properties

Investigation of structure, thermal and dielectric study of Dy_0.05Ba_0.7Sr_0.25TiO₃/polystyrene nanocomposites