An EPR study of the disorder and structural phase transitions of lithium potassium sulfate

Jiang Tsu Yu, Jin Meei Kou, Shu Jeu Huang, Lie Shuenn Co

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25 Citations (Scopus)

Abstract

The EPR of NH+3 free radicals has been used to probe the positional disorder and low-temperature structural phase transitions of LiKSO4 crystals. Anomalies at 215 K and at 190 K (on cooling) in the EPR spectrum are observed. The EPR results suggest that there is disorder in the atomic positions of the sulfate groups, and that the disorder has aggregated into small-grained crystal domains.

Original languageEnglish
Pages (from-to)121-127
Number of pages7
JournalJournal of Physics and Chemistry of Solids
Volume47
Issue number2
DOIs
Publication statusPublished - 1986

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Keywords

  • EPR
  • LiKSO4
  • crystal domains
  • crystal structure
  • free radicals
  • positional disorder
  • radiation damage
  • structural phase transitions

ASJC Scopus subject areas

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

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