5 SIMPLE TECHNIQUES FOR FE²�?ZNS CRYSTAL

KLuS two single crystal samples undoped and doped using a minimal (five %) or large (38 %) focus of trivalent thulium or ytterbium ions were synthesized in the shape of slender hexagonal plates. The very low phonon Electricity (�?20 cm ⁻�?) was confirmed using Raman spectroscopy. Samples were studied also by making use of optical absorption a