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Ionic conductivity of sodium–strontium germanate Na4SrGe6O15

  • Physical Properties of Crystals
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Abstract

The electrical conductivity of sodium–strontium germanate Na4SrGe6O15 (sp. gr. P63/m) has been studied by impedance spectroscopy in the frequency range of 102–4 × 104 Hz and a temperature range of 450–600 K. Na4SrGe6O15 crystals were obtained by hydrothermal technique in the Na2O–SrO–GeO2–H2O system (temperature t = 300–600°C and pressure p = 1.4 × 108 Pа in the dissolution zone). The ionic conductivity of ceramic Na4SrGe6O15 samples is σ = 2.2 × 10–6 S/cm (at 573 K), the activation energy of Na+ ion transfer is E a = 0.70 ± 0.03 eV.

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Authors and Affiliations

  1. Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”, Russian Academy of Sciences, 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, 2017, published in Kristallografiya, 2017, Vol. 62, No. 2, pp. 275–277.

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Sorokin, N.I. Ionic conductivity of sodium–strontium germanate Na4SrGe6O15 . Crystallogr. Rep. 62, 288–289 (2017). https://doi.org/10.1134/S1063774517020274

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  • DOI: https://doi.org/10.1134/S1063774517020274

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