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Properties of the magnetic/luminescent core/shell particles. (a) Comparison of the magnetic characteristics of Co:Nd:Fe2O3 powder with Co:Nd:Fe2O3/Eu:Gd2O3 core/shell particles and Eu:Gd2O3 particles; (b) emission spectrum of the Co:Nd:Fe2O3/Eu:Gd2O3 core/shell particles under excitation at 260 nm.
