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Lopatin, D., Guseva, A., Pestereva, N., Vostrotina, E., & Baldina, L. (2016). Electrical Properties of Tungstates Ln2(WO4)3 (Ln – Gd, Ho). KnE Materials Science, 1(1), 103-108. https://doi.org/10.18502/kms.v1i1.570

https://doi.org/10.18502/kms.v1i1.570

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authors

  • D.A. Lopatin
    No author data available.
  • A.F. Guseva
    No author data available.
  • N.N. Pestereva
    No author data available.
  • E.L. Vostrotina
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  • L.I. Baldina
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Published Date

  • Oct 12, 2016

Electrical Properties of Tungstates Ln2(WO4)3 (Ln – Gd, Ho)

KnE Materials Science / IV Sino-Russian ASRTU Symposium on Advanced Materials and Processing Technology (ASRTU) / Pages 103-108

Abstract

Electrical properties of Gd2(WO4)3 and Ho2(WO4)3 were studied and the type of charge carriers was determined. The studied compounds have a salt-like isle structure with isolated tetrahedrons. It crystallises in the Еu2(WO4)3 structural type, so-called ‘defective scheelite’, in which 1/3 of Ln sites are vacant, Ln2/3[VLn]1/3WO4. Predominant ionic conductivity in Ln2(WO4)3 (Ln = Gd, Ho) was established both by the EMF method and from independence of conductivity versus oxygen partial pressure. A minor contribution (4-11%) of the anion [WO4]2- transport was detected by the Tubandt method, which along with the results of the EMF technique proves the predominant oxygen conductivity.

References
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