A ternary composite's dielectric modeling as a binary one

Brahimi, Abdelhalim; Bourouba, Nacerdine; Jiménez, Juan Pablo Martínez; Bouzit, Nacerdine; Delfouf, R.

doi:10.1109/ssd54932.2022.9955769

Cited by 3 publications

(4 citation statements)

References 14 publications

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“…This increasing in the dielectric permittivity indicated the same effect of this perovskite titanate BaTiO 3 compared to what has been obtained in previous works [22][23][24][25][26][27][28][29][30]37,38 on other various binary, ternary and quaternary composites containing perovskite titanates such as calcium and strontium titanate.…”

Section: Resultssupporting

confidence: 85%

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Dielectric Characterization of Heterogeneous Composites Using Time Domain Spectroscopy and Microwave Test Benches in Microwave Frequency

Djouada¹,

Bouzit²,

Delfouf³

et al. 2023

ECS J. Solid State Sci. Technol.

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Dielectric composite materials made of polymers and ferroelectric ceramics have recently emerged as one of the important components for applications involving the generation, transformation, and storage of sustainable energy. Because there is a trade-off between dielectric permittivity, dielectric loss, and dissipation factor, the end use is the energy storage capacity. In the present study, epoxy resin (RE)/barium titanate (BaTiO3) composite samples are prepared using the mixture cast method with new molds. The dielectric properties, such as dielectric permittivity, dielectric loss, electrical modulus, static conductivity and dissipation factors due to the concentration of barium titanate and frequency effect on the composites, are examined using two characterization methods. The objective of this study is to determine the dielectric permittivity of the material using two microwave methods, the first is time domain spectroscopy (TDS) and the second is on the X-band microwave test bench (MTB). Additionally, different empirical mixture laws are used to estimate the dielectric permittivity of our composites. It is found that an increase in filler concentration (BaTiO3) increases the effective dielectric permittivity, which is confirmed with different empirical mixture models. The findings of this research can be used for electrical devices, including sensors, wave absorbers, resonators, and antennas.

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Section: Resultssupporting

confidence: 85%

“…The chosen experimental method is that of the adapted line. 28,29 Time domain reflectometry (TDR) measurements for each sample were performed as follows:…”

Section: Methodsmentioning

confidence: 99%

Dielectric Characterization of Heterogeneous Composites Using Time Domain Spectroscopy and Microwave Test Benches in Microwave Frequency

Djouada¹,

Bouzit²,

Delfouf³

et al. 2023

ECS J. Solid State Sci. Technol.

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show abstract

“…Then, using a calculation program integrated into the PCM-TDR software (which does the DFT of the signals), harmonic processing of the reflection coefficient and resolution of the transcendence equations that allows getting the complex permittivity. 26,27 The various discontinuities in the coaxial line result in a multiple reflection with a complex reflection coefficient that is measured empirically from incident and reflected signals measurements by using the Fourier transform. 19,29 This experimental protocol, as it is illustrated in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The nonlinear regression method (generalized reduced gradient (GRG) Algorithm) fixes this factor to a second order polynomial by virtue of its nonlinear evolution with respect to the volume fractions of each constituent, ensuring a minimum difference between the experimental data and the theoretical values resulting from the effective dielectric permittivity and effective magnetic permeability of the material under investigation as well as an acceptable level of optimization. We attempted to advance the study of multiphase composites in this work by characterizing and investigating the dielectric and magnetic behaviours of these composite materials in one research, since the previous works 19,[21][22][23][24][25][26][27][28][29] only looked at the dielectric behavior. Additionally, the effect of additives (ST/BT, FE/FR) was added to similar multiphase mixtures in order to calculate their contribution and to compare the improvement in dielectric and electrical properties achieved by these additives with different other mixtures.…”

mentioning

confidence: 99%

Investigation on Dielectric, Electric, and Magnetic Properties of (Epoxy Resin-Titanate-Oxide/Ferrite) Ternary Composites at Microwave Frequency

Arab

Delfouf

Khouni

et al. 2023

ECS J. Solid State Sci. Technol.

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The RE-ST-FE and RE-BT-FE/FR composites have been prepared and characterized using time domain spectroscopy method in the [DC-12.5] GHz range. The dielectric, magnetic, and electrical properties of the ternary composites have been investigated. In the RE-ST-FE composite, the dielectric permittivity (ε’) has been found to decrease from 9.25 to 3.70 with increase in FE concentration. While it has been observed that the electrical conductivity increases as the ST concentration increases reaching a value of 11.6 (mS / m) and shows a percolation behavior with (Vth = 26,9% ST). In the RE-BT-FE/FR composites, the magnetization hysteresis loops have been measured by vibrating sample magnetometer from -3 to +3 kOe. This has made it possible to have a maximum of saturation magnetization equal 29.3 emu/g and the permeability value close to 1.9 with the RE-BT-FR composite which is considered higher than that of the other one. It was found that an increase in the (FE/FR) concentration increases the magnetic permeability, which is confirmed by the modified Lichtenecker law with error ratio less than 0.5%. The results of this study will undoubtedly yield new materials that can be used to miniaturize electronic components used in telecommunications systems, resonators, antennas and wave absorbers.

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Characterization, Modeling, Experimental Validation and Dielectric Properties Studies of a Ternary Composite (RE-BaTiO3-SiO2) Using Time Domain Spectroscopy

Brahimi

Bourouba

Delfouf

et al. 2023

AJRC

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This study aim is to investigate the ternary composites dielectric behavior and experimentally validate the predictive model that simplifies ternary models into binary ones using time domain spectroscopy (TDS). The scattered white silicon dioxide (SiO2) powder was evenly mixed with barium titanate (BaTiO3 or BT) powder in the same epoxy resin (RE) matrix. Over a frequency range from DC to 30 GHz, the dielectric behavior of these composite samples is examined, adding in particular a low frequency study at 500 MHz. The BT addition grew the mixture dielectric permittivity from 3.6063 to 8.2313 and moving the resonance frequency (ƒr) in the direction of the low frequency from 26.245 GHz until 17.09 GHz. By improving the shape factor smoothing and bringing theoretical and experimental results closer together, this seeks to optimize the modified Lichtenecker's law (MLL). These findings comparison demonstrates that the MLL model applies to ternary composites (RE-BT-SiO2) with an acceptable accuracy level. Another numerical method was used to evaluate the RE-[RE-BT-SiO2] composites employing a binary mixing model based on an MLL equation that is identical to the former ternary. This model results correlate well with binary composites experimental values as well as ternaries that are modeled using this law. This research perspective lies on the production of new materials for use in microelectronics and particularly on the MOS structure oxides improvement.

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A ternary composite's dielectric modeling as a binary one

Cited by 3 publications

References 14 publications

Dielectric Characterization of Heterogeneous Composites Using Time Domain Spectroscopy and Microwave Test Benches in Microwave Frequency

Dielectric Characterization of Heterogeneous Composites Using Time Domain Spectroscopy and Microwave Test Benches in Microwave Frequency

Investigation on Dielectric, Electric, and Magnetic Properties of (Epoxy Resin-Titanate-Oxide/Ferrite) Ternary Composites at Microwave Frequency

Characterization, Modeling, Experimental Validation and Dielectric Properties Studies of a Ternary Composite (RE-BaTiO3-SiO2) Using Time Domain Spectroscopy

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