The nonradiative changeover prices Adhere to the formulation WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the Vitality hole. The nonradiative transition costs of Er3+ show temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative leisure fees is difficult https://erybyabcrystal95161.eedblog.com/33275572/er-yb-yab-crystal-an-overview