A REVIEW OF FE²�?ZNS CRYSTAL

KLuS two solitary crystal samples undoped and doped which has a minimal (five %) or significant (38 %) concentration of trivalent thulium or ytterbium ions were synthesized in the shape of skinny hexagonal plates. The minimal phonon Vitality (�?20 cm ⁻�?) was confirmed applying Raman spectroscopy. Samples ended up examined also by using optic