Magnetic and Transport Properties of Mn_1+xZn_1-xSb (0 < x < 1) Md Rafique Un Nabi, Aaron Wegner, Rabindra Basnet, Krishna Pandey, Gokul Acharya, Jin Hu

Mn₂Sb and MnZnSb are characterized in a Cu₂Sb-type structure but exhibit different magnetic and transport properties. Mn₂Sb is ferrimagnetic below the T_c∼550K with magnetic moment aligned parallel to c-axis, and undergo a spin-flip transition around 240K where the magnetic moment is aligned parallel to a-b plane. Meanwhile, MnZnSb is a room temperature ferromagnet. We synthesized Mn_1+xZn_1-xSb (0 < x < 1) single crystals and studied the evolution of magnetic and transport properties. We probed two magnetic phase transitions and observed anomalous hall effect in Mn_1+xZn_1-xSb which changes sign with decreasing temperature. In addition, we have probed topological Hall effect likely to be attributed to spin texture. Our discoveries provide a new platform to study the tuning of magnetism and possibly offer a new 2D magnetic system.