The nonradiative changeover costs follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Vitality hole. The nonradiative transition costs of Er3+ show temperature dependence in step with the multiphonon leisure theory. In Tm3+ the temperature dependence of nonradiative rest charges is https://er-yb-yab-crystal51738.aioblogs.com/86393124/top-guidelines-of-er-yb-yab-crystal