(a) The absolute values of temperature coefficients of coercivity for the starting magnet, the magnets with 6 wt.%, 9 wt.%, and 12 wt.% Y–Ce and 9 wt.% Ce substitution in different temperature intervals. The inset shows the absolute values of temperature coefficients of remanence within the temperature interval from 293 K to 393 K for the corresponding magnets. (b) Normalized magnetization measured as a function of temperature in 10 kOe. M 293 K represents the magnetization measured at 293 K. Curie temperatures are shown in the inset.^[95]