MANUFACTURING METHOD FOR BARIUM ALUMINIUM FERRITE NANO POWDER HAVING HIGH COERCIVITY AND BARIUM ALUMINIUM FERRITE NANO POWDER MANUFACTURED THEREBY

摘要

The present invention relates to aluminum , barium ferrite nanopowders method for producing a high coercivity. To this end , there is provided a method comprising the following steps : dissolving the iron nitrate , barium nitrate , aluminum nitrate in deionized water phase ; Forming a precursor powder by the addition of glycine to the solution, SHS by adjusting the pH; And a step of calcining the precursor powder . Such barium ferrite nano- aluminum powder production method of the high coercive force of the present invention can control the magnetic properties depending on the composition ratio of Al, it is possible to control the size of particles of coercivity with annealing time and by controlling the size of the coercive force and the particle strength aluminum , barium ferrite nanopowders can be achieved . ;