High pressure Raman study of DyPO4 at room and low temperatures

A. G. Kontos, E. Stavrou, V. Malamos, Y. S. Raptis*, C. Raptis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The Raman spectra of DyPO4, under variable hydrostatic pressure at room- and low-temperature (110 K), have been studied. Crossing, with increasing pressure, of two modes in the frequency range of the internal-external border, is observed and discussed. At low temperature, the pressure dependence of the three highest-frequency internal modes is monitored, which exhibit a (dω/dP)-slope differing, well beyond the experimental error, from the corresponding room temperature slopes. At room temperature, all the expected modes are observed and are divided in two distinct groups on a "logarithmic derivative" vs. "peak-frequency" graph. This division is discussed in terms of the internal-external mode-character.

Original languageEnglish
Pages (from-to)386-391
Number of pages6
JournalPhysica Status Solidi (B): Basic Research
Volume244
Issue number1
DOIs
StatePublished - Jan 2007
Externally publishedYes

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