[B-2-05] The high concentration NV ensembles formed from heavily nitrogen-doped CVD diamond with high quality | 2023 International Conference on Solid State Devices and Materials

2023 International Conference on Solid State Devices and Materials

Sep 5 - Oct 31, 2023Nagoya Congress Center

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2023 International Conference on Solid State Devices and Materials

Sep 5 - Oct 31, 2023Nagoya Congress Center

[B-2-05]The high concentration NV ensembles formed from heavily nitrogen-doped CVD diamond with high quality

^○Yudai Asano¹, Kyosuke Hayasaka¹, Mayu Ueda¹, Kosuke Kimura^2,3, Takashi Tanii¹, Shinobu Onoda², Shinpei Enomoto⁴, Hiroshi Kawarada^1,4(1. Waseda Univ. (Japan), 2. National Inst. of Quantum and Radiological Sci. and Tech. (Japan), 3. Gunma Univ. (Japan), 4. Kagami Memorial Res. Inst. for Materials Sci. and Tech. (Japan))

https://doi.org/10.7567/SSDM.2023.B-2-05

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In this study, the NV density was evaluated from the dipolar interaction strength of NV in heavily nitrogen doped CVD diamond with the world's highest nitrogen concentration ([N]=8.0×10²⁰[cm^-3]). The diamond was irradiated by focused electron beam of 300keV to form dense vacancies equivalent to nitrogen density in the CVD diamond. In this study, As a result, we have obtained the highest NV density ensemble in the world on CVD diamonds (8.5x10¹⁸ cm^-3) and HPHT diamonds (1.1x10¹⁹ cm^-3). The NV’s high concentration is necessary breakthrough experimental for improving magnetic sensitivity.

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