Pressure induced phase transition in antiferroelectric kno

Z. Iqbal, F. J. Owens

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The pressure induced I1 to IV phase transition in KNO3 has been studied by Raman scattering. In the antiferroelectric phase 11, the translational shear modes show larger pressure coefficients than the NOS- rotational vibrations, which were found to be weakly coupled at 295 K. In phase IV a drastic change in the potential around N03-sites occurs and the rotational modes show sizable pressure coefficients. The Raman data suggest that phase 1V has a structure of relatively low symmetry.

Original languageEnglish (US)
Pages (from-to)229-231
Number of pages3
Issue number1
StatePublished - Jan 1 1977
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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