??“???”?“???”???????????“?????”????????????????????????????????????????????????????????????????????????????????????????Bismuth (Bi) appears to be a steel, but the number of electrons available for electrical conduction is similar to that of semiconductors. In actual fact, bismuth is termed a semimetal. Molecular solids are often crystal… Read More

The nonradiative transition premiums Keep to the formula WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Power gap. The nonradiative transition charges of Er3+ show temperature dependence in line with the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative peace prices is intricate by the existence… Read More