Ferromagnetic titanium doped black phosphorus

Diluted magnetic semiconductor (DMS) and layered material black phosphorus (BP) are two kinds of important materials. In this manuscript, it was reported on the observation of ferromagnetism in Ti-doped BP synthesized by high pressure method. Clear hysteresis loops were observed at room temperature. The Curie temperature was deduced to be 130-140 K. Transport studies showed us temperature dependent positive-to-negative magnetoresistance (MR) transition with the 40% MR effect at 30 K under the magnetic field of 50 kOe.