NOT KNOWN FACTS ABOUT FE²�?ZNS CRYSTAL

KLuS two one crystal samples undoped and doped that has a small (5 %) or superior (38 %) concentration of trivalent thulium or ytterbium ions had been synthesized in the shape of slender hexagonal plates. The lower phonon Vitality (�?20 cm ⁻�?) was verified employing Raman spectroscopy. Samples had been analyzed also by utilizing optical abso