Induced magnetization in armchair and Zig-zag CNTs on adsorbing transition metals

In this paper, we investigated the effect of adsorption of transition metal on electronic properties of metallic and semiconducting (CNTs). It was found that magnetization can be induced in metallic and semiconducting CNTs by adsorbing transition metals on them. Density of states (DOS) and bandstructure results suggest ferromagnetic (FM) and half metal ferromagnetic (HMF) characteristics in transition metal adsorbed metallic and semiconducting CNTs. Metallic (6, 0) CNT shows induced ferromagnetism on adsorbing Ag, Co, Cr, Ti, Mo, and shows HMF characteristic on adsorbing Zr. Semiconducting (8, 0) CNT shows induced HMF characteristic on adsorbing Ag, Co, Cr, Ti, Mo, and shows ferromagnetic characteristic on adsorbing Zr. Induced magnetism in CNTs can find application in magnetic sensors, magnetic forced microscopy, biomedical cell transportation and 1-D magnetoresistive spintronic devices.