The nonradiative changeover charges follow the components WNR = W (0) exp(-alphap), where p is the number of phonons matching the Vitality hole. The nonradiative changeover fees of Er3+ show temperature dependence according to the multiphonon peace concept. In Tm3+ the temperature dependence of nonradiative peace charges is complex by https://erybyabcrystal08530.dreamyblogs.com/35165123/top-latest-five-er-yb-yab-crystal-urban-news