Nickel-Silicon Related Color Center Formed in Nanodiamond Grains under CVD Growth

Table 1

Calculated vibration energy and resonance width of quasilocal vibrations for some possible defects containing heavy impurity atom.

(meV)	(meV)	Impurity content
43.9	20.2	1Ni
29.2	8.9	2Ni
23.4	5.7	3Ni
34.7	12.6	1Ni + 1Si
26	7.1	2Ni + 1Si
23.6	5.8	2Ni + 2Si
29.6	9.2	1Ni + 2Si