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Oriented Polycrystalline Films for Infrared Spectroscopic Studies

Volume 39, Number 2 (April 1985) Page 273-278

Landry, J.M.; Katon, J.E.; Hughes, J.M.

Polarized infrared spectra obtained from oriented samples are very useful for determining vibrational assignments and/or crystal structure information. The technique of growing highly oriented polycrystalline films for such studies has been used for some time to obtain mid-infrared data of organic compounds. This paper summarizes the important factors in the growth of such films and describes extensions of the technique to organometallic and inorganic compounds and to the far-infrared spectral region. Implications of the technique with respect to crystal orientation and polymorphism are also considered.