Fully compensated ferrimagnetism in a Cr2TiC2 monolayer MXene

Abstract

Fully compensated ferrimagnets have the combined advantages of both the band spin splitting of ferromagnetism and a zero net magnetization of antiferromagnetism, which makes them attractive complements such as spin-polarization current of charges, no magnetic stray fields, and uneasily affected by external magnetic fields in fast and energy-efficient spintronic devices. Two-dimensional MXenes with sandwiches consisting of two magnetic atomic layers separated by nonmagnetic atomic layers are potential fully compensated ferrimagnets with intralayer ferromagnetic and interlayer antiferromagnetic coupling. Interestingly, fully compensated ferrimagnetism can be obtained in Cr₂TiC₂ monolayer MXene based on the first-principles calculations. Our results provide more potential two-dimensional candidates for fully compensated ferrimagnets.