AC conductivity and dielectric behavior in mixed electronic-ionic 30Li2O–4MoO3–(66–x)TeO2–xV2O5 glass system

Rosdiyana Hisam, Ahmad Kamal Yahya, Halimah Mohamed Kamari, Zainal Abidin Talib

Research output: Research - peer-reviewArticle

Abstract

AC conductivity, dielectric property, and electric modulus formalism of lithium molybdenum tellurite glasses containing vanadium with compositions 30Li2O–4MoO3–(66–x)TeO2–xV2O5 (x = 0.2, 0.4, 0.6, 0.8, 1.0, and 1.2) have been studied in the frequency range 10−2 Hz to 1 MHz and temperature range 323–413 K to investigate the effects of mixed ionic–electronic carriers in the glasses. The variation of AC conductivity with V2O5 showed a nonlinear increase for x ≤ 0.6 mol% before decreasing to a minimum at 0.8 mol% V2O5. The decrease in σAC attributed to some forms of blocking effect on Li+ ions caused by the mixed ionic–electronic (MIE) effect. Meanwhile, dielectric constant showed a general increase for x ≤ 0.6 before an anomalous decrease at x = 0.8 mol% V2O5, which was followed by a large increase at x > 0.8 mol%. The decrease at x = 0.8 mol% coincided with the σAC drop at the same location. This decrease was also suggested related to the MIE that induced a blocking effect, which caused the restricted dipole movement.

LanguageEnglish
Pages1-15
Number of pages15
JournalIonics
DOIs
StateAccepted/In press - Jan 10 2017

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alternating current
conductivity
glass
electronics
Glass
Vanadium
Molybdenum
Lithium
Dielectric properties
Permittivity
Ions
Chemical analysis
Temperature
tellurous acid
vanadium
molybdenum
dielectric properties
lithium
frequency ranges
permittivity

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

AC conductivity and dielectric behavior in mixed electronic-ionic 30Li2O–4MoO3–(66–x)TeO2–xV2O5 glass system. / Hisam, Rosdiyana; Yahya, Ahmad Kamal; Mohamed Kamari, Halimah; Talib, Zainal Abidin.

In: Ionics, 10.01.2017, p. 1-15.

Research output: Research - peer-reviewArticle

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