WHAT DOES FE²�?ZNS CRYSTAL MEAN?

KLuS two single crystal samples undoped and doped by using a small (5 %) or higher (38 %) concentration of trivalent thulium or ytterbium ions ended up synthesized in the shape of slim hexagonal plates. The minimal phonon energy (�?20 cm ⁻�?) was verified using Raman spectroscopy. Samples have been researched also by using optical absorption