Figure 3
From: Fe doped Magnetic Nanodiamonds made by Ion Implantation

Field dependent magnetization for (a) original NDs and (b) sorted NDs with dose 3 × 1015 cm−2 sample at 5 K and 300 K. The original NDs show no hysteresis, it indicates that the original NDs is diamagnetic. The sorted NDs has a clear hysteresis and its saturated moment of is 1.4 × 10−5 emu at 5 K and 1.0 × 10−5 emu at 300 K, and its coercivity is around 40 Oe. The sorted NDs shows room temperature ferromagnetism. The inset shows the zoom plot of hysteresisfor the sorted NDs.