The infrared reflectances of virgin and ggr;hyphen;ray irradiated NaNO2have been determined from the reflection spectra which have been investigated as functions of temperature (ranging from RT to 180thinsp;deg;C) and crystallographic orientation, and ggr;hyphen;ray irradiation dose (4times;107and 3times;108rouml;ntgen.) over a frequency region between 700 and 2000 cmminus;1. Using the Kramershyphen;Kronig dispersion relation, we have obtained the dielectric function and oscillator parameters from the reflection spectra. These constants are used to explain the ferroelectric properties of NaNO2. In addition the observed differences between the reflection spectra of virgin and those of ggr;hyphen;ray irradiated NaNO2are explained using a brokenhyphen;bond model.
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