Colossal Magnetization and Giant Coercivity in Ion-Implanted (Nb and Co) MoS Crystals.

Colossal saturation magnetization and giant coercivity are realized in MoS single crystals doped with Nb and/or Co using an ion implantation method. Magnetic measurements have demonstrated that codoping with 2 at % Nb and 4 at % Co invoked a "giant" coercivity, as high as 9 kOe at 100 K. Doping solely with 5 at % Nb induces a "colossal" magnetization of 1800 emu/cm at 5 K, which is higher than that of metallic Co.