Abstract: A novel strategy of preparing of hollow barium ferrite submicrospheres based on chemical self-assembly technique is described in this paper. That is, using poly (styrene-co-acrylic acid) latexes as template, the chemical interaction between the carboxyl groups on the latex surface and the hydroxyl groups on the surface of barium ferrite precursor prepared in poly-glycol solution results in the formation of poly(styrene-co-acrylic acid)/ barium ferrite precursors core-shell nanocomposite particles. Heat-treatment of the composite particles by upgrading temperature to 750 ℃ leads to hollow barium ferrite submicrospheres with BaFe12O19 crystal phase mainly. The products might find significant applications in such fields as radar absorbers or electro-magneto-rheological fluids.

Key words: Hollow spheres, Barium ferrite, Chemical self-assembly, Poly(styrene-co-acrylic acid), Core-shell nanocomposite particles