Dynamic Correlations Below The Anti-Ferrodistortive Transition In Perovskites

Gunther Meissner, P. Szépfalusy

Research output: Contribution to journalArticle

Abstract

Dynamic behavior in certain perovskites below the anti-ferrodistortive transition is studied along the longitudinal excitation branch by investigating effects of weak anisotropy for a n = 3 component order parameter field. Exploiting the consequences of small deviations from isotropy and of the relatively high frequencies involved, it is found that the longitudinal excitation frequency may be expected to be proportional to the average value P of the order parameter beyond the static mean-field region :>t temperatures. Experimental implications of our theory are briefly discussed.

Original languageEnglish
Pages (from-to)527-530
Number of pages4
JournalFerroelectrics
Volume37
Issue number1
DOIs
Publication statusPublished - 1981

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perovskites
Anisotropy
isotropy
excitation
deviation
Temperature
anisotropy
temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Dynamic Correlations Below The Anti-Ferrodistortive Transition In Perovskites. / Meissner, Gunther; Szépfalusy, P.

In: Ferroelectrics, Vol. 37, No. 1, 1981, p. 527-530.

Research output: Contribution to journalArticle

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