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Eu 3+  doped Ba 2 MgWO 6  (BMW) double-perovskite was successfully synthesized for the first time by the co-precipitation method. The synthesis procedure, crystal structure, as well as morphology of obtained samples are presented. Domination of the  5 D 0 – 7 F 1  magnetic–dipole over forced electric–dipole transitions in the emission spectra indicates that Eu 3+  ions are located in the high symmetry site with inversion center. Only one emission line assigned to the  5 D 0 – 7 F 0  transition was observed, confirming that europium substituted for only one host cation site. The photoluminescence excitation (PLE) spectrum is dominated by a strong and broad band related to the O 2−  → Eu 3+  and O 2−  → W 6+  charge transfer. The decay of the emission from the  5 D 0  and  5 D 1  levels was investigated. The temperature-dependent emission spectra showed that the T 0.5  is equal to 350 K. Extinguishing mechanisms of the Eu 3+  luminescence in the studied host are discussed.

Synthesis, Structure, Morphology, and Luminescent Properties of Ba2MgWO6: Eu3+ Double Perovskite Obtained by a Novel Co-Precipitation Method