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Low‐Frequency Dielectric Response Function of Sodium Nitrate
Author(s) -
Wyncke B.,
Brehat F.,
Kozlov G. V.
Publication year - 1985
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.2221290210
Subject(s) - dielectric , relaxation (psychology) , sodium nitrate , perpendicular , spectroscopy , infrared spectroscopy , low frequency , dielectric spectroscopy , sodium , chemistry , lattice (music) , infrared , materials science , far infrared , dielectric loss , crystal (programming language) , condensed matter physics , analytical chemistry (journal) , optics , inorganic chemistry , physics , optoelectronics , mathematics , acoustics , psychology , social psychology , geometry , quantum mechanics , electrochemistry , organic chemistry , electrode , astronomy , computer science , chromatography , programming language
Abstract The far infrared and submillimeter dielectric function of sodium nitrate single crystal is determined by means of precise transmission spectroscopy (7 to 18 cm −1 ) and reflexion spectroscopy (10 to 600 cm −1 ) over the temperature range 20 to 275 °C, parallel and perpendicular to the crystallographic c ‐axis. All the infrared active lattice modes are observed and their parameters calculated using the factorized form of the dielectric function. A relaxation is introduced to explain the low‐frequency dielectric function in the two directions.