Ferrite sintered magnet

A ferrite sintered magnet comprising ferrite grains having a hexagonal structure,

• wherein the ferrite sintered magnet comprises metallic elements at an atomic ratio represented by formula (1):
• Ca1-w-xRwSrxFezCom (1)
• in formula (1), R is at least one element selected from the group consisting of rare-earth elements and Bi, and R comprises at least La, in formula (1), w, x, z and m satisfy formulae (2) to (5):
• 0.360≤w≤0.420 (2)
• 0.110≤x≤0.173 (3)
• 8.51≤z≤9.71 (4)
• 0.208≤m≤0.269 (5), and
• in a section parallel to an axis of easy magnetization, when a number of total ferrite grains is N and a number of ferrite grains having a stacking fault is n, 0≤n/N≤0.20 is satisfied.