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Ionic conductivity of KMgFe(MoO4)3 crystals

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Abstract

The electrical conductivity of KMgFe(MoO4)3 crystals has been determined in the temperature range 296–828 K using impedance spectroscopy (5 to 5 × 105 Hz). The potassium magnesium iron molybdate was prepared by solid-state reaction between MgMoO4 and KFe(MoO4)2 at 900 ± 25 K over a period of 200 h. The ionic conductivity of KMgFe(MoO4)3 ceramic samples is σ = 3 × 10−4 S/cm at 573 K and the activation enthalpy for ionic transport is E a = 0.53 ± 0.03 eV. After heating in vacuum, electrical measurements indicated electronic conduction, which shunted the original impedance of the samples.

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  1. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333, Russia

    N. I. Sorokin

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  1. N. I. Sorokin
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Correspondence to N. I. Sorokin.

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Original Russian Text © N.I. Sorokin, 2015, published in Neorganicheskie Materialy, 2015, Vol. 51, No. 5, pp. 546–549.

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Sorokin, N.I. Ionic conductivity of KMgFe(MoO4)3 crystals. Inorg Mater 51, 490–493 (2015). https://doi.org/10.1134/S0020168515040160

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  • DOI: https://doi.org/10.1134/S0020168515040160

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