Electronic Resource
Springer
International journal of infrared and millimeter waves
1 (1980), S. 641-647
ISSN:
1572-9559
Keywords:
Al2O3
;
MgO
;
far-infrared spectroscopy
;
far-infrared absorption
;
multiphonon processes
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Far-infrared absorption measurements performed in Al2O3 and MgO between 300 and 1 500 K with a Fourier scanning interferometer are reported. A temperature analysis of results based on a phonon self-energy model allows to assign the absorption in this region to 2- and 3-phonon difference processes. The contributions of these processes are separated and discussed. In Al2O3, the frequency dependence of the absorption is also analyzed. A good overall agreement between theory and experiment is evidenced.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01013473
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