Synthesis, Structure, Morphology, and Luminescent Properties of Ba(2)MgWO(6): Eu(3+) Double Perovskite Obtained by a Novel Co-Precipitation Method

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.