PROCEDURES FOR THE MANUFACTURE OF POULTRY FROM MAGNETOPLUMBART HEXAGONAL FERRITURE AND PROCEDURE FOR THE MANUFACTURING OF A FUNCTIONAL PRODUCER

摘要

A method for producing a powder of a magnetoplumbite-type hexagonal ferrite which is an aggregate of particles of a compound represented by Formula (1), the method including: a step A of adjusting a pH of an aqueous solution containing a Fe salt, an Al salt, and at least one metal element salt selected from the group consisting of a Sr salt, a Ba salt, a Ca salt, and a Pb salt to exceed 8.0, thereby obtaining a reaction product; a step B of drying the reaction product obtained in the step A, thereby obtaining a dried product; and a step C of firing the dried product obtained in Step B, thereby obtaining a fired product, and application. In Formula (1), A represents at least one metal element selected from the group consisting of Sr, Ba, Ca, and Pb, and x satisfies 1.5 ≤ x ≤ 8.0.        AFe(12-x)Al×O19     ··· Formula (1)