Ferromagnetism in ultrathin MoS(2) nanosheets: from amorphous to crystalline

Two-dimensional materials have various applications in the next generation nanodevices because of their easy fabrication and particular properties. In this work, we studied the effects of crystalline order on the magnetic properties of ultrathin MoS(2) nanosheets. Results indicate that all the fabricated samples show clear room temperature ferromagnetism. The amorphous sample has the larger saturation magnetization than that of the crystallized samples, where the disordered grain boundary or defects in the nanosheets are considered to be responsible for the long-range magnetic order. These MoS(2) nanosheets with versatile functions may have potential applications in spintronics, nanodevices, and photodevices.