57Fe Mössbauer study of Fe nitrides |
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Authors: | T. Hinomura S. Nasu |
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Affiliation: | (1) Department of Material Physics, Faculty of Engineering Science, Osaka University, 560 Toyonaka, Osaka, Japan |
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Abstract: | Summary Magnetic properties of Fe nitrides have been re-examined by57Fe M?ssbauer spectroscopy. Hyperfine magnetic fields for α″-Fe16N2 are 30, 31 and 39T at 298K, but the averaged hyperfine field is 33T and nearly equal to the value of pure α-Fe. σ-Fe2 N is an antiferromagnet below 9K having a small magnetic moment less than 0.1 μB, although γ′-Fe4N and ε-Fe3–2N are ferromagnets. ZnS-type FeN is non-magnetic at 4.2K. M?ssbauer spectra obtained from NaCl-type FeN are complex and some Fe atoms in this nitride show a surprisingly large hyperfine magnetic field of 49T. Paper presented at the ICAME-95, Rimini, 10–16 September 1995. |
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Keywords: | M?ssbauer effect other γ -ray spectroscopy |
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