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Figure 3

From: Systematic Study of Ferromagnetism in CrxSb2−xTe3 Topological Insulator Thin Films using Electrical and Optical Techniques

Figure 3

(a,c) Zero-field anomalous Hall conductivity (\({\sigma }_{xy}^{A}\)) and optical Kerr rotation (θK) for samples with x = 0.76 and x = 0.58 as a function of T, respectively. (b) Coercivity (Hc) for the x = 0.76 film extracted from MOKE hysteresis loop measurements as a function of laser power. The photovoltage is proportional to the light intensity incident on the film (10 V corresponds to ~10 mW). (d) Dependence of Hc with temperature for the film with x = 0.76. (e,g) Kouvel-Fisher plots showing the obtained values for β and TC from the slope and intercept, respectively. (f,h) Arrott plots giving a TC of 176 K (x = 0.76) and 132 K (x = 0.58).

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