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short communications
Contamination-free TiNx was prepared and the lattice parameter (a0)–nitrogen content (x) relation determined. The result can be expressed as a0 = 4.1925 + 0.0467x (in Å) in the range 0.605 ≤ x ≤ 0.999. Density measurement showed that no titanium vacancies existed in the lattice.