Ac electrical properties and dielectric relaxation of the new mixed crystal (Na0.8Ag0.2)2PbP2O7

Louati, B.; Hlel, F.; Guidara, K.

doi:10.1016/j.jallcom.2009.06.148

Cited by 71 publications

(28 citation statements)

References 29 publications

(32 reference statements)

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“…Ceramic x = 0 [21] x = 0.2 [10] x = 0.4 x = 0.5 [11] x = 1 [22] E tion between ions whereas when the mobile ion concentration increases, the coupling between charge carriers is more extended. Therefore, the greater value of theˇat high temperature may be due to poor interaction between the mobile ions in this temperature region.…”

Section: Electric Modulus Analysismentioning

confidence: 99%

“…Recently we have reported the electrical properties of the (Na 0.8 Ag 0.2 ) 2 PbP 2 O 7 [10] and (Na 0.5 Ag 0.5 ) 2 PbP 2 O 7 [11] compounds. As a continuation, we analyze in this paper, the conduction behavior and the dielectrical properties of the polycrystalline (Na 0.6 Ag 0.4 ) 2 PbP 2 O 7 sample over the frequency range 200 Hz to 5 MHz and temperature range 502-667 K.…”

Section: Introductionmentioning

confidence: 99%

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Impedance and modulus analysis of the (Na0.6Ag0.4)2PbP2O7 compound

Mahamoud

Louati

Hlel

et al. 2011

Journal of Alloys and Compounds

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Section: Electric Modulus Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impedance and modulus analysis of the (Na0.6Ag0.4)2PbP2O7 compound

Mahamoud

Louati

Hlel

et al. 2011

Journal of Alloys and Compounds

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“…Impedance spectroscopy is an important and the most reliable technique with which to examine the electrical, dielectric properties of conjugated conductive polymeric materials. It gives a straight correlation among the response of an idealized system and a real model circuit composed of various electrical components [49]. The electronic conductivity of the polymers can be calculated by using Equation (8): (8) where δ is the electronic conductivity, d thickness of polymer thin film, R b bulk resistance, taken at the intersection among semi-circle and straight line, S area of electrode.…”

Section: Electrical Conductivitymentioning

confidence: 99%

Conductive and photoactive nature of conjugated polymer based on thiophene functionalized thiazole or benzothiadiazole

Mahesh¹,

Karpagam²,

Goubard³

2018

Express Polym. Lett.

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Abstract. New poly (thiophene vinyl thiazole) (PTVT) and poly (thiophene vinyl benzothiadiazole) (PTVBT) was synthesized by Wittig condensation route. The absorption maximum of PTVT and PTVBT appeared at 376 and 410 nm in a solution state, and it was red-shifted to 417 and 510 nm in a thin film state. The optical band gaps were 1.7 and 1.5 eV calculated from thin film absorption edges of the polymer. The photoluminescence spectra of PTVT and PTVBT have an emission peak at 457 nm with bluish green and 487 nm with greenish-yellow fluorescence in THF solution. Both polymers showed a short fluorescence decay time (τ 1 ) of 2.31 and 0.73 ns respectively. Furthermore, the aggregation-caused quenching (ACQ) phenomenon observed in both polymers in decreased fluorescence intensity with different water fractions. The lower electrochemical band gaps were achieved for both polymers (1.4, and 1.3 eV) from cyclic voltammetry. Both polymers have a granular shaped morphology with good surface roughness was observed using AFM. High thermal stability was observed with 8% weight loss at 400°C for PTVT and 6% weight loss at 460°C for PTVBT. The highest electrical conductivity was observed from electrochemical impedance measurement which was 7.68·10 -6 Ω -1 ·cm -1 for PTVBT.

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“…The close proximity of to unity is regarded as the correlation with the intrinsic lattice responses arises due to the incorporation of rare earth metal ions [46] The strength of polarizibility is determined by the term [47]. The values of , and are calculated for different concentrations of Er 3+ and are given in the Table 2.…”

Section: Ac Conductivitymentioning

confidence: 99%

NIR emission studies and dielectric properties of Er3+-doped multicomponent tellurite glasses

Sajna

Thomas

Jayakrishnan

et al. 2016

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Multicomponent tellurite glasses containing altered concentrations of Er 2 O 3 (ranging from 0 to 1 mol%) were prepared by the standard melt quenching technique. Investigations through energy dispersive X-ray spectroscopy (EDS), Raman scattering spectroscopy, FTIR spectroscopy, NIR emission studies and dielectric measurement techniques were done to probe their compositional, structural, spectroscopic and dielectric behaviour. The influence of erbium ion concentration on the infrared emission (~1.53 m) of these glasses and their respective lifetimes were measured. From the measured capacitance and dissipation factor, the relative permittivity, dielectric loss and the conductivity were computed; which furnish the dielectric nature of the multicomponent tellurite glasses that depend on the frequency of the applied LCR meter. Assuming the ideal Debye behaviour as substantiated by Cole-Cole plot, an examination of the real and imaginary parts of impedance is performed. The power-law and Cole-Cole parameters were resolved for all the glass samples. From the assessment of the NIR emission analysis and dielectric properties of the glass samples, it is manifested that the Er 3+ ion concentration has played a vital role in tuning the optical and dielectric properties and the 0.5 mol% Er 3+-doped glass is confirmed as the finest composition.

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Ac electrical properties and dielectric relaxation of the new mixed crystal (Na0.8Ag0.2)2PbP2O7

Cited by 71 publications

References 29 publications

Impedance and modulus analysis of the (Na0.6Ag0.4)2PbP2O7 compound

Impedance and modulus analysis of the (Na0.6Ag0.4)2PbP2O7 compound

Conductive and photoactive nature of conjugated polymer based on thiophene functionalized thiazole or benzothiadiazole

NIR emission studies and dielectric properties of Er3+-doped multicomponent tellurite glasses

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