TY - JOUR
T1 - Infrared properties of ferropericlase Mg1-x Fex O
T2 - Experiment and theory
AU - Sun, Tao
AU - Allen, Philip B.
AU - Stahnke, David G.
AU - Jacobsen, Steven D.
AU - Homes, Christopher C.
PY - 2008/4/4
Y1 - 2008/4/4
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=41749103084&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=41749103084&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.77.134303
DO - 10.1103/PhysRevB.77.134303
M3 - Article
AN - SCOPUS:41749103084
SN - 1098-0121
VL - 77
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 13
M1 - 134303
ER -