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MnBi₂Te₄ has emerged as the first stoichiometric antiferromagnetic topological insulator [1]. In thin flakes, MnBi₂Te₄ has shown remarkable properties including the quantum anomalous Hall (QAH) effect [2]. We investigate the single crystal growth and transport properties of other members of the MnBi_2xTe_3x+1 family and find both temperature and low field dependent crossovers from A-type antiferromagnetism to ferromagnetism in MnBi₄Te₇, suggesting MnBi₄Te₇ as another candidate for QAH effects in zero external field. We discuss the anomalous Hall response in relation to the magnetic structure, and dependence of the transport properties on angle of the external magnetic field.
[1] M. Otrokov et al., arXiv:1809.07389 (2018). [2] Y. Deng et al., arXiv:1904.11468 (2019).