Abstract
Nitrogen vacancy (NV−) centers possess exceptional sensitivity to magnetic field even under ambient condition. The optically detectable electron spins and the atomic size make it a promising candidate for advanced magnetic resonance imaging (MRI) technique with nanoscale spatial resolution. In this work, diamond particles with NV− centers were deposited by microwave plasma chemical vapor deposition (MPCVD) under gaseous N 2 dopant and were fixed on the fabricated scanning probe as a magnetic sensor. While the existence of NV− center was determined by Raman spectroscopy, the photoluminescence intensity at 2.87 GHz microwave frequency was decreased by an optically detected magnetic resonance (ODMR) system. It implies that the NV− spin state can be manipulated and read out using optical excitation.
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