The Magnetic/Electrical Phase Diagram of Cr-Doped Antiperovskite Compounds GaCFe_3−𝑥Cr_𝑥 (0≤𝑥≤0.9)

Figure 5

(Color online) (a) The normalized resistivity 𝜌(𝑇)/𝜌(350 K) dependence of temperature at zero field between 2 and 350 K for GaCFe_3−𝑥Cr_𝑥 (0≤𝑥≤0.9). (b) The temperature of minimal resistivity as a function of 𝑥 for GaCFe_3−𝑥Cr_𝑥 (0≤𝑥≤0.6). (c) Temperature dependence of resistivity at zero magnetic field for GaCFe_3−𝑥Cr_𝑥 (0.7≤𝑥≤0.9); inset displays the linear fits of 𝜌(𝑇) for the samples with 0.7≤𝑥≤0.9 between 100 and 270 K. (d) The lower-𝑇𝜌(𝑇) data plotted as 𝜌(𝑇) versus 𝑇² for the samples with 0.7≤𝑥≤0.9; the left and right insets show fitted parameters 𝐴 and 𝑘 as a function of 𝑥, respectively (see text for details).

(a)

(b)

(c)

(d)