Physics
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000m%26ps...35.1269s&link_type=abstract
Meteoritics & Planetary Science, vol. 35, no. 6, pp. 1269-1273 (2000).
Physics
9
Scientific paper
Films condensed from vapors containing SiO, Fe, or Mg showed an amorphous structure. Infrared (IR) spectra and electron microscopic characterization have been carried out on these films. After the heat treatment of these films in air, IR peaks at 18?23 μm appeared, in addition to peaks attributable to SiO2. These peaks can be attributed to metallic oxides such as FeO, Fe2O3 and MgO. It can be concluded that Fe- or Mg-bearing silicate minerals cannot be produced by the rapid cooling of SiO, Fe or Mg vapors. Although IR spectra of FeO have been discussed in order to match some spectra obtained with the Infrared Space Observatory (ISO), the identification of FeO as the impurity would be very important because the IR spectra of FeO grains are very dependent on the shape and size of the grains. These impurities can also influence the IR spectral feature of SiO2.
Kaito Chihiro
Kimura Sachie
Koike Chiyoe
Nakada Taro
Saito Yukio
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