5 SIMPLE STATEMENTS ABOUT FE²�?ZNS CRYSTAL EXPLAINED

KLuS two single crystal samples undoped and doped which has a minimal (5 %) or high (38 %) concentration of trivalent thulium or ytterbium ions had been synthesized in the form of thin hexagonal plates. The low phonon Vitality (�?20 cm ⁻�?) was verified employing Raman spectroscopy. Samples have been studied also by using optical absorption a