l The spin−orbit coupling, which will mix the 2 E g and 4 T 2g states, relaxed the spin selection rule. Besides, since a strong electric dipole transition occurs between the states with opposite parity, the 2 E g → 4 A 2g transition can gain electric dipole intensity if th ...
High temperature measurements are made using pressed powder samples in an Al sample holder that has cartridge heaters and thermocouples that are connected to a Watlow temperature controller. 1)将粉压片;2)Al样品托;3)cartridge-墨盒,暗盒;Watlow-厂家名。
One key advantage of the K 2 SiF 6 :Mn 4+ phosphor versus other Mn 4+ -doped complex fluorides is that it retains a high (85% absolute) quantum efficiency (QE) and brightness up to 150°C, even at high Mn 4+ concentrations greater than 10at% Mn 4+ substitution for Si 4+ . 16