Ferrite magnetic material, ferrite magnet, and ferrite sintered magnet

A ferrite magnetic material, in which its main phase comprises:

• a ferrite phase having a hexagonal crystal structure, and
• metal element composition constituting the ferrite magnetic material is expressed by the following formula (1),
• Ca1-w-x-yRwSrxBayFezMm (1)
• wherein:
• R in formula (1) is at least one element selected from the group consisting of rare-earth element, including Y, and Bi, which at least includes La,
• M in formula (1) is at least one element selected from the group consisting of Co, Mn, Mg, Ni, Cu, and Zn, which at least includes Co,
• w, x, y, z, and m in formula (1) respectively satisfies the following formulas (2), (3), (4), (5), (6), (7) and (8)
• 25≦w≦0.5 (2)
• 0.01≦x≦0.35 (3)
• 0.0001≦y≦0.013 (4)
• y<x (5)
• 8.7≦z≦9.9 (6)
• 1.0<w/m<2.1 (7)
• 0.017<m/z<0.055 (8), and
• an Si component is at least included as a sub-component, and wherein;
• when content y1 mass % of the Si component in the ferrite magnetic material, with respect to SiO2, is shown on Y-axis and a total content x1 of z and m is shown on X-axis, a relation between x1 and y1 is within a range surrounded by 4 points a(8.9, 1.2), b(8.3, 0.95), c(10.0, 0.35) and d(10.6, 0.6), placed on X-Y coordinate having the X and Y axes,
• residual flux density Br is from 392.0 to 478.5 mT,
• coercive force HcJ is from 301.0 to 434.4 kA/m, and
• squareness ratio Hk/HcJ is from 78.5% to 95.1%.