The nonradiative transition costs Adhere to the formula WNR = W (0) exp(-alphap), wherever p is the volume of phonons matching the energy hole. The nonradiative transition charges of Er3+ exhibit temperature dependence in line with the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative leisure fees is https://erybyabcrystal85172.blog2freedom.com/33270717/a-review-of-er-yb-yab-crystal