Irisova I.; Rodionov A.; Tayurskii D.; Yusupov R.
(2014)
Using electron paramagnetic resonance (EPR) spectroscopy, we have shown that, upon mecha- noactivated doping of powders of compounds CaF2, SrF2, and BaF2 with Er3+ ions, impurity centers of single erbium ions with cubic ...