Infrared properties of ferropericlase Mg1-x Fex O: Experiment and theory

Tao Sun*, Philip B. Allen, David G. Stahnke, Steven D. Jacobsen, Christopher C. Homes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The temperature dependence of the reflectance spectra of magnesium oxide (MgO) and ferropericlase (Mg1-x Fex O, for x=0.06 and x=0.27) have been measured over a wide frequency range (≈50-32000 cm-1) at 295 and 6 K. The complex dielectric function has been determined from a Kramers-Kronig analysis of the reflectance. The spectra of the doped materials resemble pure MgO in the infrared region, but with much broader resonances. We use a shell model to calculate the dielectric function of ferropericlase, including both anharmonic phonon-phonon interactions and disorder scattering. These data are useful in understanding the vibrational properties of ferropericlase.

Original languageEnglish (US)
Article number134303
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number13
StatePublished - Apr 4 2008

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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