Fig. 4
From: Doping effects of indium and copper on ferromagnetism in N-type magnetic semiconductor Ba(Zn,Co)2As2
(a, b) \((\chi -\chi _{0})^{-1}\) versus temperature plots for Cu-doped and In-doped samples. Straight lines show the linear fitting, and the fitting temperature range is from 100 K to 200 K. (c, d) dM(T)/dT versus temperature plots for Cu-doped and In-doped samples. \(T_{C}\) were determined as the temperature showing a minimum of these curves.
