Magnetic and luminescence properties of the porous CoFe2O4@Y2O3:Eu3+ nanocomposite with higher coercivity

In this paper, the magnetic, luminescence, and porous CoFe 2 O 4 @Y 2 O 3 :Eu 3+ nanocomposite was synthesized by a facile three-step method. The porous structure of the nanocomposite had been produced by burning off the intermediate carbon layer. The CoFe 2 O 4 @Y 2 O 3 :Eu 3+ nanocomposite consists of uniform, well-dispersed microspheres with a size of 260–275 nm. The nanocomposite shows excellent magnetic and luminescence properties. The prepared CoFe 2 O 4 /C microsphere and porous CoFe 2 O 4 @Y 2 O 3 :Eu 3+ nanocomposite display higher coercivity than that of the obtained CoFe 2 O 4 particles. The size, magnetic, and photoluminescence properties of the nanocomposite can be adjusted by changing the annealing temperature, deposited amount of Y 2 O 3 :Eu 3+ , and the concentration of glucose aqueous solution. The interactive effects of the magnetism and luminescence have been discussed.