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. 2016 Sep 29;7:12935. doi: 10.1038/ncomms12935

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Copyright © 2016, The Author(s)

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(a–f) Theoretical Hahn-echo coherence times (T₂) of the divacancy ensemble in 4H–SiC (a–e) and the NV centre in diamond (f) as a function of ¹³C isotope concentration with a fixed ²⁹Si concentration at 4.7% (a), 3.0% (b), 2.0% (c), 1.0% (d) and 0.0% (e) at five different magnetic fields. The black dashed line is the scaling law in equation (6) in the main text.