  As a sister compound and isostructural of MnBi2Te4, the high quality MnSb2Te4
single crystals are grown via solid-state reaction where prolonged annealing
and narrow temperature window play critical roles on account of its thermal
metastability. X-ray diffraction analysis on MnSb2Te4 single crystals reveals
pronounced cation intermixing, 28.9(7)% Sb antisite defects on the Mn (3a) site
and 19.3(6)% Mn antisite defects on the Sb (6c) site, compared with MnBi2Te4.
Unlike antiferromagnetic (AFM) nature MnBi2Te4, MnSb2Te4 contains magnetic and
antiferromagnetic competition and exhibits a spin glass (SG) state below 24 K.
Its magnetic hysteresis, anisotropy, and relaxation process are investigated in
detail with DC and AC magnetization measurements. Moreover, anomalous Hall
effect as a p-type conductor is demonstrated through transport measurements.
This work grants MnSb2Te4 a possible access to the future exploration of exotic
quantum physics by removing the odd/even layer number restraint in intrinsic
AFM MnBi2Te4-family materials as a result of the crossover between its
magnetism and potential topology in the Sb-Te layer.
