The Influence of Chemical Composition on the Magnetic Properties of Fe1.5-xCoxRh0.5Mo3N (0 â¤ x â¤ 1.5)
The system Fe1.5-xCoxRh0.5Mo3N has been studied by neutron diffraction, magnetometry, Mössbauer spectroscopy and transport measurements in order to follow the variations in the electronic properties as cobalt is added to ferromagnetic Fe 1.5Rh0.5Mo3N. The Curie temperature is maximised (132 K) when x = 0.5, although the saturation magnetisation decreases with increasing cobalt content. Co1.5Rh0.5Mo3N does not show long-range magnetic order above 5 K. All compositions show metallic conductivity and the temperature dependence of the internal hyperfine fields in iron-rich compositions can be fitted using the Stoner model. The change in behaviour observed for x > 0.9 is attributed to the dominance of antiferromagnetic interactions in cobalt-rich regions.
P. D. Battle et al., "The Influence of Chemical Composition on the Magnetic Properties of Fe1.5-xCoxRh0.5Mo3N (0 â¤ x â¤ 1.5)," Journal of Materials Chemistry, vol. 17, no. 45, pp. 4785-4796, Royal Society of Chemistry, Sep 2007.
The definitive version is available at http://dx.doi.org/10.1039/b711342k
Keywords and Phrases
Antiferromagnetic Materials; Curie Temperature; Electronic Properties; Neutron Diffraction; Saturation Magnetization; Chemical Compositions; Hyperfine Fields; Magnetic Orders; Metallic Conductivity; Transport Measurements; Iron Compounds
International Standard Serial Number (ISSN)
Article - Journal
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