MXene's surface functionalization patterns and their impacts on magnetism

Abstract

The magnetic properties of Ti2C MXenes can be tuned by varying the coverage and patterns of oxygen and fluorine terminations, with potential applications in electronic nanodevices.

Mn2C MXene functionalized by oxygen is a semiconducting antiferromagnet and an efficient visible light absorber

“…The antiferromagnetic ground state can be then also seen in other non-terminated MXenes, such as two-, three-, or four-layer Ti n C n− 1 sheets. 9–12…”

“…1–4 The typical composition of MXenes is M n +1 X n T x with 1 ≤ n ≤ 4 and x ≤ 2, where M is a transition metal, X is carbon or nitrogen, and T is the surface termination which includes groups 16 and 17 of the periodic table or hydroxyl and imido groups. 2D MXene's properties are sensitive to composition, termination, or external conditions and provide a rich set of its phases: metals, semiconductors, 5 ferromagnets, 6–9 antiferromagnets, 9–13 topological insulators 14 or excitonic insulators 15 with the possibility of magnetization modulation by an electric field 16,17 or lattice defects. 10 Here we focus on less explored manganese-based MXenes as they are extremely interesting for the energetic competition of magnetic states.…”