Impurity‐Induced Far‐Infrared Absorption in the Phonon Gap Regions of KI and KBr | Zendy

Grisar R. G. J. | Zendy; Reiners K. P. | Zendy; Renk K. F. | Zendy; Genzel L. | Zendy

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Impurity‐Induced Far‐Infrared Absorption in the Phonon Gap Regions of KI and KBr

Author(s) -

Grisar R. G. J.,

Reiners K. P.,

Renk K. F.,

Genzel L.

Publication year - 1967

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.19670230222

Subject(s) - impurity , far infrared , doping , phonon , infrared , absorption (acoustics) , grating , spectrometer , infrared spectroscopy , chemistry , materials science , analytical chemistry (journal) , optics , optoelectronics , physics , condensed matter physics , organic chemistry , chromatography

Measurements are made on doped KI and KBr using a far‐infrared grating spectrometer, which is briefly described. The absorption of KI:OD − at 4.3 °K exhibits localized vibrational and translational gap modes. An attempt to assign these modes is made by proposing a term scheme. Measurements of doped KBr between 2.5 and 80 °K confirm the boundaries of the acoustic‐optical gap as 96 cm −1 and 100 cm −1 , respectively.

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