Controllable synthesis of Ni-dotted Fe3S4 with its superior wideband electromagnetic absorbing performance

Transition metal dichalcogenides (TMD) have attracted considerable attention as promising electromagnetic (EM) absorbing materials due to the desirable conductivity loss ability. However, the single conductivity loss ability is still difficult to obtain high EM absorption performance. In this work, a Ni-dotted magnetic Fe 3 S 4 nanoparticle has been produced via a simple solvothermal and subsequent ball-milling route. The results revealed that the Ni-dotted Fe 3 S 4 is not only having conductivity loss, but also shows magnetic and polarization loss capability. Because of multiple loss mechanism, the Ni-dotted Fe 3 S 4 shows wideband EM absorbing ability, with an effective absorption region of 6.4 GHz at a thinner thickness of 1.6 mm. Utilization of doping strategy to modify TMD material can be a candidate for producing high-performance EM absorbers.