Growth, structural, vibrational, mechanical and dielectric studies of KSbF4 crystal

Interest on Antimony Fluoride Compounds (AFC) has been increased for the last two decades due to its superionic conduction and its unusual electro-optic properties. KSbF4 crystal was successfully grown by low temperature solution growth technique. The XRD analysis confirms that the crystal belongs to orthorhombic system with space group Pmmn. From the observed FTIR spectrum the frequencies of the vibrations have been found. Work hardening coefficient of KSbF4 crystal indicates that it belongs to moderately softer category. The dielectric constant (ɛr), the dielectric loss (tanδ) and AC conductivity (σ) were determined as a function of temperature at different frequencies from 100 Hz to 1 MHz. It has been found out that above 423 K, KSbF4 crystal shows superionic behavior, due to fast diffusion motion of fluorine ions.