Structure and magnetic properties of Fe1.14Cr1.86Se4 ferrimagnet: Negative magnetization and its dependence on magnetic field

► Origin of large negative magnetization the Fe1.14Cr1.86Se4 has been demonstrated. ► High-temperature magnetization reversal is explained. ► Magnetization reversal in Fe1.14Cr1.86Se4 depends on the strength of cooling field. ► Single crystals of Fe1.14Cr1.86Se4 were grown using vapor transport technique