2013
DOI: 10.1007/s40145-013-0048-y
|View full text |Cite
|
Sign up to set email alerts
|

Electrical properties of Na2Pb2R2W2Ti4V4O30 (R = Dy, Pr) ceramics

Abstract: Abstract:The polycrystalline samples of complex tungsten bronze (TB) Na 2 Pb 2 R 2 W 2 Ti 4 V 4 O 30 (R=Dy, Pr) compounds were prepared by solid-state reaction technique. Room-temperature preliminary structural studies confirm the formation of the compounds in the orthorhombic crystal system. Detailed studies of electrical properties of the materials using complex impedance spectroscopy technique exhibit that the impedance and related parameters are strongly dependent upon temperature and microstructure (bulk,… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
15
0

Year Published

2015
2015
2024
2024

Publication Types

Select...
7

Relationship

0
7

Authors

Journals

citations
Cited by 34 publications
(15 citation statements)
references
References 25 publications
0
15
0
Order By: Relevance
“…The frequency spectra of the ac conductivity provide information about the nature of charge carriers [ 53 ]. Jonscher attempted to explain the behavior of ac conductivity using the following law [ 53 ]: where σ ac ( ω ) is the total measured conductivity; σ (0), σ dc is a frequency-independent term giving dc conductivity, and σ 1 ( ω ) is the pure dispersive component of ac conductivity having a power-law characteristic in the angular frequency ω domain with an exponent n , and a is a proportionality factor. The value of n is in the range of 0 < n <1 and is frequency-independent but temperature- and material-dependent [ 53 ].…”
Section: Resultsmentioning
confidence: 99%
See 3 more Smart Citations
“…The frequency spectra of the ac conductivity provide information about the nature of charge carriers [ 53 ]. Jonscher attempted to explain the behavior of ac conductivity using the following law [ 53 ]: where σ ac ( ω ) is the total measured conductivity; σ (0), σ dc is a frequency-independent term giving dc conductivity, and σ 1 ( ω ) is the pure dispersive component of ac conductivity having a power-law characteristic in the angular frequency ω domain with an exponent n , and a is a proportionality factor. The value of n is in the range of 0 < n <1 and is frequency-independent but temperature- and material-dependent [ 53 ].…”
Section: Resultsmentioning
confidence: 99%
“…The conduction dependence obeys the Jonscher universal power law (Equation (6)), with n ≈ 0.8. According to Jonscher’s law [ 53 ], the frequency-dependent conductivity originates from relaxation phenomena due to the mobility of charge carriers. When a mobile charge hops to a new site from its initial position, it remains in a displaced state between two potential energy minima.…”
Section: Resultsmentioning
confidence: 99%
See 2 more Smart Citations
“…, where, A is the pre-factor constant, which is a function of temperature and composition, ω is the angular frequency and s is the exponent factor of the power law, 0 1 s ≥ ≥ , (Das et al, 2013;Kumar, 2013;Veerabhadra et al, 2006). In most cases, the separation between the dc and ac conductivities is a very difficult process, so this work presents an empirical expression to describe the measured conductivity as a function of the static dielectric constant, the activation energy and the exponent factor s. Then the total measured conductivity can easily be modeled and fitted to the experimentally measured data.…”
Section: Introductionmentioning
confidence: 99%