Email this article Ionic conductivity of sodium–strontium germanate Na4SrGe6O15
- Authors: Sorokin N.I.1
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Affiliations:
- Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”
- Issue: Vol 62, No 2 (2017)
- Pages: 288-289
- Section: Physical Properties of Crystals
- URL: https://journals.rcsi.science/1063-7745/article/view/190848
- DOI: https://doi.org/10.1134/S1063774517020274
- ID: 190848
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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 Ea = 0.70 ± 0.03 eV.
About the authors
N. I. Sorokin
Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”
Author for correspondence.
Email: nsorokin1@yandex.ru
Russian Federation, Moscow, 119333
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