O-Vacancy-line defective Ti₂CO₂ nanoribbons: novel magnetism, tunable carrier mobility, and magnetic device behaviors

Abstract

Detailed first-principles calculations show that the O-vacancy-line (OVL) defects can alter nonmagnetic armchair-edged Ti2CO2 nanoribbons to obtain novel magnetism, flexibly tunable spin-resolved carrier mobility, and high-performance magnetic device behaviors.

The tunable electric and magnetic properties of 2D MXenes and their potential applications

“…Meanwhile, large magnetism was obtained in doped systems. It was proposed that direct exchange between surface Z and Ti atoms induces the larger magnetism in the doped system 144 .…”

First-principles study of magnetism in some novel MXene materials

“…Therefore, several approaches such as strain engineering, doping or defect generation, and surface decoration have been adopted to introduce magnetism into 2D materials, [9][10][11][12] and the effects on the magnetic properties have been discussed. 13,14 Simultaneously, new magnetic 2D materials are in demand. MXenes, a unique family of metal carbides and/or nitrides with the chemical formula M n+1 X n , where M is the transition metal that potentially generates the intrinsic magnetic moment, X can be carbon and/or nitrogen, and n varies between 1 and 3, were discovered in 2011 and have attracted extensive research interest in recent years.…”

Hetero‐MXenes: Theory, Synthesis, and Emerging Applications

“…Magnetic behavior has been demonstrated in Ti 2 XT 2 with X vacancy except for Ti 2 CO 2 [ 104 ] and line defects. [ 105 ] Both Ti and N vacancies could enhance magnetism in Ti 4 N 3 sheets, so increasing the total magnetic moment from 1.173 to 1.817 μB for V Ti and to 2.373 μB for V N systems. [ 106 ] However, the most promising characteristic of vacancies in MXenes is the ability to host guest atoms toward catalytic and Li‐ion battery applications that are explained in the following parts of this review.…”