Abstract
Near-normal incidence infrared reflectivity spectra of (001) strontium lanthanum aluminate (SrLaAlO4) single crystal have been measured under different temperatures in the frequency region between 100 and 6500 cm−1. Five phonon modes are distinguished at low frequency while no spectral features were observed above 1000 cm−1. All the reflectivity spectra are fitted with the factorized form of the dielectric function. The dielectric properties of the SrLaAlO4 crystal in far-infrared region are presented and analyzed.
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