PURPOSE: To enable a magnetic paint with improved dispersion to be controlled by controlling the amount of an alkali metal ion and an alkali metal earth ion which are contained so that they are adhered or clad on a surface to a specific range.

CONSTITUTION: A magnetic powder of a hexagonal system ferrite which is shown in an expression I is a main constituent and at least one type of metal ion which is selected from a group of alkali metal ions and alkali metal earth ions is contained from 100ppm to 1000ppm. In the expression I. A is at least one type of element which is selected from Ba, Sr, Ca, and Pb and M is at least one type of element which is selected from Co, Ti, In, Ni, Cu, Zn, Nb, Zr, V, Ta, Al, Cr, Sb, Hf, Mo, W, Ir, Sn, and Mg, namely 5.0≤n≤6.5 and 0.02≤x≤0.24.