Structural phase transitions and electrical conductivity studies of (NH4)3H(SeO4)2 crystal

R. H. Chen, T. M. Chen, C. S. Shern

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The electrical conductivity measurements were performed on single crystals of (NH4)3H(SeO4)2 in the temperature range of 25°C to 80°C along the c* axis. The crystal is found to be in a superionic state as it transforms to the high-temperature phase. The temperature dependence of the electrical conductivity of the sample crystal in the different phases follows the Arrhenius law. The increasing electrical conduction is due to the disorder of the oxygen atoms of the SeO4 groups in the high-temperature phase. The proton ions can move among the sites which are the newly formed hydrogen bonds between the oxygen atoms of the nearest and next-nearest SeO4 groups.

Original languageEnglish
Pages (from-to)1009-1013
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume59
Issue number6-7
DOIs
Publication statusPublished - 1998 Jun

Keywords

  • Electrical conductivity
  • Inorganic compound
  • Proton ionic conductor
  • Structural phase transition
  • Superionic

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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