Electrical conductivity and dielectric analysis of AgNaZnP2O7 compound

Rhaiem, A. Ben; Hlel, F.; Guidara, K.; Gargouri, M.

doi:10.1016/j.jallcom.2009.06.062

Cited by 34 publications

(18 citation statements)

References 29 publications

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“…In the temperature range, conductivity of Ag 2 ZnP 2 O 7 (σ 550 K =3.31 × 10 −5 Ω −1 cm −1 ) is higher than AgNaZnP 2 O 7 (σ 550 K =1.39 × 10 −7 Ω −1 cm −1 ) [44]. This difference allows us to conclude that the electric properties do not depend on the activation energy.…”

Section: Discussionmentioning

confidence: 73%

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Dielectric relaxation and ionic conductivity studies of Ag2ZnP2O7

Rhaiem

Chouaib

Guidara

2009

Ionics

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The complex impedance of the Ag 2 ZnP 2 O 7 compound has been investigated in the temperature range 419-557 K and in the frequency range 200 Hz-5 MHz. The Z′ and Z′ versus frequency plots are well fitted to an equivalent circuit model. Dielectric data were analyzed using complex electrical modulus M* for the sample at various temperatures. The modulus plot can be characterized by full width at half-height or in terms of a non-exponential decay function f t ð Þ ¼ exp Àt=t ð Þ b . The frequency dependence of the conductivity is interpreted in terms of Jonscher's law: s w ð Þ ¼ s dc þ Aw n . The conductivity σ dc follows the Arrhenius relation. The near value of activation energies obtained from the analysis of M″, conductivity data, and equivalent circuit confirms that the transport is through ion hopping mechanism dominated by the motion of the Ag + ions in the structure of the investigated material.

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Section: Discussionmentioning

confidence: 73%

“…The Ag + ion has much higher polarizability than the Na + ion. This propriety should enhance the ionic conductivity of the Ag + ions and explains why the Ag 2 ZnP 2 O 7 compound shows higher conductivity than the NaAgZnP 2 O 7 compound [44].…”

Section: Discussionmentioning

confidence: 98%

Dielectric relaxation and ionic conductivity studies of Ag2ZnP2O7

Rhaiem

Chouaib

Guidara

2009

Ionics

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“…This leads to an increase of the value of tanδ with temperature. The increase of the dielectric loss at low frequency is due to dipole polarization [36][37][38].…”

Section: Dielectric Permittivity (ε ) and Dielectric Loss (Tanδ)mentioning

confidence: 99%

Effect of magnesium substitution on structural and dielectric properties of LiNiPO₄

Anand

Ramamurthy

Veeraiah

et al. 2017

Materials Science-Poland

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The aim of this paper is to study the effect of Mg 2+ doping in place of Ni in LiNiPO 4 compounds synthesized by solid state reaction method. As Mg is a relatively light and cheap, and is expected to stabilize the structure, it has been considered as a substituent for Ni. The structural and conductivity studies of the substituted phases are discussed in comparison with LiNiPO 4 . In this study, we have proposed cation-substituted compounds, LiNi 1 − x Mg x PO 4 (x = 0, 0.05, 0.1 and 0.15) where a part of the divalent state of Ni 2+ is replaced with the corresponding amount of Mg 2+ and where the charge compensation is maintained by lithium deficiency. It is possible to obtain the mentioned compounds because the pristine LiNiPO 4 compound is stable in ambient atmosphere, which differs considerably from the LiCoPO 4 compound.

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“…Moreover, s increases linearly with increasing the applied frequency. The increase of s with increasing frequency suggests that hopping conduction dominate and the increase of the applied frequency enhances the hopping of charge carriers between the localized states [25][26][27]. …”

Section: Electrical-frequency-temperature Characterizationsmentioning

confidence: 99%