Raman scattering from magnons and phonons in FeBO3 and FeF3

A. E. Meixner, R. E. Dietz, D. L. Rousseau

Research output: Contribution to journalArticle

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Abstract

Scattering from all the k=0 first-order Raman-active phonons in FeBO3 and FeF3 has been observed. Underlying the A1g phonon in FeBO3 is a broad second-order phonon-scattering peak which accounts for the peculiar temperature behavior of the A1g band when viewed with low resolution. Scattering from magnon-pair states has been observed at 538 cm-1 in FeBO3 and at 564 cm-1 in FeF3. The nearest-neighbor-exchange parameters J are 19.2 and 20.1 cm-1, respectively. Estimates are given for various processes by which exchange striction may contribute to first-order phonon scattering. There are no observable effects due to a strong magnon-phonon interaction as previously reported for FeBO3.

Original languageEnglish (US)
Pages (from-to)3134-3141
Number of pages8
JournalPhysical Review B
Volume7
Issue number7
DOIs
Publication statusPublished - Jan 1 1973
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

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