The structure, magnetism and electronic transport properties of Mn₃Sn_1-xZn_xC(x=0, 0.1, 0.2, 0.3, 0.4, 0.5)

The structure, magnetic and electronic transport properties of the compounds Mn₃Sn_1-xZn_xC (0 ≤ x ≤ 0.5) are investigated. The studies have shown that Zn-doping in the anti-perovskite structure Mn₃SnC reduces the cell parameter, but the compounds Mn₃Sn_1-xZn_xC remain cubic anti-perovskite structure. When the temperature is reduced, the magnetization curve changes from PM-FM for Mn₃SnC and Mn₃Sn_0.9Zn_0.1C into PM-FM-AFM for Mn₃Sn_1-xZn_xC(x ≥ 0.2). With the increase of doping amount x, both the Tc and the T_T reduce, but when x = 0.5, they are raised. In addition, the magnetization of Mn₃Sn_1-xZn_xC is reduced as the doping amount increases. For Mn₃Sn_1-xZn_xC(x = 0, 0.1, 0.2,0.3, 0.4, 0.5) compounds, there exists an anomalous increase in resistivity at a certain temperature that is in agreement with their magnetic transition temperature, and doping Zn in Mn₃SnC reduces the resistivity of Mn₃SnC.