Electrical conductivity and dielectric behaviour of nanocrystalline La0.6Gd0.1Sr0.3Mn0.75Si0.25O3

Dhahri, Ah.; Dhahri, E.; Hlil, E.K.

doi:10.1039/c8ra00037a

Cited by 161 publications

(51 citation statements)

References 47 publications

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“…where σ 0 is the D.C.-conductivity of the sample; Aω s corresponds to the pure dispersive component of the A.C.-conductivity, characterized by presenting a power law in terms of angular frequency ω and exponent s (0 < s ≤ 1). The latter represents the degree of interaction between mobile charges and the molecular environment around them, and A is a constant associated with the polarizability strength [24]. The parameters of the fit curves according to the Jonscher's power law of PMMI and PMMI-Li + are shown in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Electrical Properties of Poly(Monomethyl Itaconate)/Few-Layer Functionalized Graphene Oxide/Lithium Ion Nanocomposites

et al. 2020

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Poly(monomethyl itaconate) is outstanding because it is a glassy and dielectric polymer obtained from sustainable feedstock. Consequently, the study of the properties of its nanocomposites has gained importance. Herein, the electrical properties of nanocomposites based on poly(monomethyl itaconate) and functionalized few-layer graphene oxide (FGO) in the presence and absence of lithium ions (Li+) are studied. Not only did the electrical conductivities of the nanocomposites present values as high as 10−5 Scm−1, but also the dielectric permittivity of nanocomposites with (FGO) content lower than the percolation threshold was twice that of the pristine polymer, without presenting a drastic increase of the loss tangent. By contrast, nanocomposites containing Li+ ions presented significant increases of the permittivity with concomitant increases of the loss tangent. Moreover, it was determined that the presence of Li+ ions influenced the charge transport in the composites because of its ionic nature.

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Section: Resultsmentioning

confidence: 99%

Electrical Properties of Poly(Monomethyl Itaconate)/Few-Layer Functionalized Graphene Oxide/Lithium Ion Nanocomposites

et al. 2020

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“…where r dc represents the dc part of conductivity which is frequency independent, and Ax s represent the ac part of conductivity which is frequency dependent. Thus, the ac conductivity (r ac ) is defined as [41][42][43][44][45][46][47][48],…”

Section: Complex Electrical Conductivitymentioning

confidence: 99%

Complex dielectric permittivity, electric modulus and electrical conductivity analysis of Au/Si3N4/p-GaAs (MOS) capacitor

Türkay

Tataroğlu

2021

J Mater Sci: Mater Electron

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RF magnetron sputtering was used to grow silicon nitride (Si3N4) thin film on GaAs substrate to form metal–oxide–semiconductor (MOS) capacitor. Complex dielectric permittivity (ε*), complex electric modulus (M*) and complex electrical conductivity (σ*) of the prepared Au/Si3N4/p-GaAs (MOS) capacitor were studied in detail. These parameters were calculated using admittance measurements performed in the range of 150 K-350 K and 50 kHz-1 MHz. It is found that the dielectric constant (ε′) and dielectric loss (ε″) value decrease with increasing frequency. However, as the temperature increases, the ε′ and ε″ increased. Ac conductivity (σac) was increased with increasing both temperature and frequency. The activation energy (Ea) was determined by Arrhenius equation. Besides, the frequency dependence of σac was analyzed by Jonscher’s universal power law (σac = Aωs). Thus, the value of the frequency exponent (s) were determined.

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“…While at high frequencies shows the ion leap conduction mechanism. The hopping rate shows the frequency of plateau region displacement at low frequencies to the dispersion region at high frequencies [24]. Table 2 is the hopping rate for each sample.…”

Section: Resultsmentioning

confidence: 99%

Effect of Sorbitol Addition to Polymer Solid Electrolytes based on Chitosan

Yulianti¹

2021

Adv. Mater. Lett.

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Electrical conductivity and dielectric behaviour of nanocrystalline La_0.6Gd_0.1Sr_0.3Mn_0.75Si_0.25O₃

Abstract: A complex impedance spectrum for La0.6Gd0.1Sr0.3Mn0.75Si0.25O3 sample at different temperatures with electrical equivalent circuit.

Cited by 161 publications

References 47 publications

Electrical Properties of Poly(Monomethyl Itaconate)/Few-Layer Functionalized Graphene Oxide/Lithium Ion Nanocomposites

Electrical Properties of Poly(Monomethyl Itaconate)/Few-Layer Functionalized Graphene Oxide/Lithium Ion Nanocomposites

Complex dielectric permittivity, electric modulus and electrical conductivity analysis of Au/Si3N4/p-GaAs (MOS) capacitor

Effect of Sorbitol Addition to Polymer Solid Electrolytes based on Chitosan

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