The nonradiative transition fees Stick to the method WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Strength gap. The nonradiative changeover charges of Er3+ exhibit temperature dependence according to the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative rest charges is complex https://er-yb-yab-crystal39506.bloguerosa.com/32145428/er-yb-yab-crystal-an-overview