Abstract
Nanocrystalline ε-Fe3−x Co x N system having particle size in the range of 10–15 nm is synthesized by chemical route. For compositions x=0.0–0.2, the system crystallizes in hexagonal structure and for x=0.4–0.8, the system shows a mixture of hexagonal ε-Fe3−x Co x N and cubic α-Fe structures. The Mössbauer spectra shows the doublet for the former structure and the sextet for latter when cobalt concentration is in the range x=0.4–0.8 indicating the presence of α-Fe trapped in the nitride matrix. The superparamagnetic nature of ε-Fe3−x Co x N phase is confirmed from the magnetization measurements.
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Gajbhiye, N.S., Ningthoujam, R.S. & Weissmüller, J. Mössbauer Study of Nanocrystalline ε-Fe3−x Co x N System. Hyperfine Interactions 156, 51–56 (2004). https://doi.org/10.1023/B:HYPE.0000043212.76850.52
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DOI: https://doi.org/10.1023/B:HYPE.0000043212.76850.52