Infrared Optical Properties of Ferropericlase (Mg1-xFexO): Experiment and Theory

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dc.creatorSun, Tao
dc.creatorAllen, Philip B.
dc.creatorStahnke, David G.
dc.creatorJacobsen, Steven D.
dc.creatorHomes, Christopher C.
dc.date2007-04-18
dc.date.accessioned2026-07-07T09:30:35Z
dc.date.available2026-07-07T09:30:35Z
dc.descriptionThe temperature dependence of the reflectance spectra of magnesium oxide (MgO) and ferropericlase (Mg1-xFexO, for x=0.06 and x=0.27) have been measured over a wide frequency range (~50 to 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 resembles 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 relevant to understanding the heat conductivity of ferropericlase in the earth's lower mantle.
dc.description17 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0704.2267
dc.identifierhttp://arxiv.org/abs/0704.2267
dc.identifierPhys. Rev. B 77, 134303 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.134303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158165
dc.subjectMaterials Science
dc.titleInfrared Optical Properties of Ferropericlase (Mg1-xFexO): Experiment and Theory
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