Abstract
The electronic and magnetic properties of the two-dimensional Ti3C2 MXenes have attracted a lot of interests due to its potential applications. In this paper, Ti3C2 T x MXenes and Mn-doped Ti3C2 T x MXenes are synthesized and investigated. The experimental data shows that Mn2+ ions are homogeneously and randomly intercalated between Ti3C2 sheets as function terminals, which increase the interlayer distance between Ti3C2 sheets and offer a mass of uncoupled magnetic moment. The temperature dependence of the electric resistivity of both samples show similar complex behavior although the resistivity increases dramatically as Mn doping. The inter-flake variable range hopping (VRH) dominates the low temperature electric transport behavior, while the inter-flake thermally activated hopping as well as the metallic intra-flake transport competing with the inter-flake VRH play important roles at high temperature. The increasing resistivity of the Mn-doped sample could be attributed to the increase of the interlayer distance and the enhancement of the localization of the transport electrons after Mn2+ ions intercalation.
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