Magnetic properties of alpha '-FeN sub x and alpha "Fe sub 16 N sub 2 nitrides

In the present work we studied the magnetic properties of alpha '-FeN sub x and alpha "-Fe sub 16 N sub 2 nitrides. Powder samples of nitrides were prepared by nitriding of iron powder in the mixture of H sub 2 and NH sub 3 . The desired alpha "-Fe sub 16 N sub 2 was prepared by the c...

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Published in:Journal of alloys and compounds 1998-06, Vol.274 (1-2), p.10-17
Main Authors: Bezdicka, P, Klarikova, A, Paseka, I, Zaveta, K
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Klarikova, A
Paseka, I
Zaveta, K
description In the present work we studied the magnetic properties of alpha '-FeN sub x and alpha "-Fe sub 16 N sub 2 nitrides. Powder samples of nitrides were prepared by nitriding of iron powder in the mixture of H sub 2 and NH sub 3 . The desired alpha "-Fe sub 16 N sub 2 was prepared by the conventional method-tempering of samples containing alpha '-FeN sub x . The maximum content of alpha "-Fe sub 16 N sub 2 in the resulting mixture with alpha -Fe and gamma -FeN sub x was up to 60 wt%. The presence of individual phases was determined by XRD analysis and Mossbauer spectroscopy. The specific magnetic moment of samples was measured in SQUID magnetometer and that of individual phases was evaluated using data of the phase composition. Along with magnetic measurements the average magnetic moments of the present Fe atoms were evaluated from hyperfine fields derived from Mossbauer spectra. The average specific magnetization of alpha "-Fe sub 16 N sub 2 determined by XRD, Mossbauer phase analysis together with SQUID measurements and from hyperfine fields of Mossbauer spectra were 246, 244 and 240 emu g exp -1 , respectively.
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title Magnetic properties of alpha '-FeN sub x and alpha "Fe sub 16 N sub 2 nitrides
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