ABOUT FE²�?ZNS CRYSTAL

KLuS 2 one crystal samples undoped and doped with a reduced (5 %) or superior (38 %) focus of trivalent thulium or ytterbium ions had been synthesized in the form of slender hexagonal plates. The small phonon Vitality (�?20 cm ⁻�?) was confirmed working with Raman spectroscopy. Samples have been researched also by using optical absorption and