Abstract

Well oriented KY(WO4)2 single crystal weakly doped simultaneously with Er, Yb and Nd have been investigated using EPR technique. Angular dependencies of the EPR lines clearly confirm C2 symmetry of all: Er3+, Yb3+ and Nd3+ dopants. Basic parameters of the spin Hamiltonian, including Zeeman and hyperfine terms (g and A matrices) as well the spatial orientation between principal axes system and crystallographic axes system were determined.

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