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Fig. 2 | Nanoscale Research Letters

Fig. 2

From: Photoluminescence from NV Centres in 5 nm Detonation Nanodiamonds: Identification and High Sensitivity to Magnetic Field

Fig. 2

EPR spectra of acid-purified DNDs in the region of half magnetic field (black curve) and of reference electron-irradiated fluorescent Ib HPHT diamond nanoparticles with mean size ~100 nm (red curve) in the range up to 320 mT. Both lines of the DND EPR spectrum are marked by numbers 1 and 2. The low-field line 1 with g = 4.272 corresponds to NV centres. Lines related with low-field (LF) allowed z Δms = 1 and x,y Δms = 1 transitions in FND 100 nm are marked by arrows for the upper spectrum. The weakest, barely distinguishable line related with allowed z Δms = 1 transition is additionally marked by a circle. The microwave frequency was 9.4393 GHz

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