Insight into the intrinsic magnetic properties of dual-main-phase Ce magnets through Ce chemical state

•A series of dual-main-phase Ce magnets were prepared and the intrinsic magnetic property was systematically investigated.•Saturation magnetization increased abnormally in Ce 0.5 due to the decrease of Ce4+.•Spin reorientation temperature indicated that Ce substitution for Nd at the 4f site tends to saturate until at x = 0.4–0.5.•Application temperature window was broadened by regulating the spin reorientation temperature.