Magnetite was doped with rare earth ions (europium) to produce core-shell materials with both magnetic and luminescent properties, i.e., a magnetic Fe 3 O 4 oxide core and a SiO 2 :phen:Eu 3+ shell. The resulting material was analyzed by X-ray powder diffraction and transmission electron microscopy, and subjected to magnetic and luminescence emission measurements. All the synthesized materials exhibited superparamagnetic behavior and luminescence emission. The magnetic behavior of Fe 3 O 4 and luminescence emission of SiO 2 :phen:Eu 3+ of the materials were compared to precursors.
In this work we investigated the functional properties of a set of acceptor (Cu1+) and donor (Gd3+) codoped wurtzite ZnO ceramics Zn(1−x)(CuzGdy)xO for x = 0.01 synthesized by the pressure-less solid state sintering method.
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