The nonradiative changeover rates follow the components WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the energy gap. The nonradiative transition premiums of Er3+ exhibit temperature dependence according to the multiphonon rest theory. In Tm3+ the temperature dependence of nonradiative rest charges is intricate via https://er-yb-yab-crystal29617.verybigblog.com/32557123/er-yb-yab-crystal-an-overview