EXAMINE THIS REPORT ON FE²�?ZNS CRYSTAL

KLuS two one crystal samples undoped and doped having a small (5 %) or superior (38 %) concentration of trivalent thulium or ytterbium ions were synthesized in the shape of slender hexagonal plates. The small phonon Electrical power (�?20 cm ⁻�?) was verified using Raman spectroscopy. Samples were analyzed also by utilizing optical absorption