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Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2011

(Lu0.8Ce0.2)2Fe17 single crystal under hydrostatic and 'negative' pressure induced by hydrogenation

Résumé

An experimental study of correlations between the magnetovolume effects and the type of magnetic ordering in the Lu2Fe17-based intermetallics is shown for the example of variation of the interatomic distances by means of substitution of Ce for Lu, hydrogenation and subsequent high-pressure investigation of both the initial (Lu0.8Ce0.2)2Fe17 and a hydride (Lu0.8Ce0.2)2Fe17H0.4 single-crystalline compounds. The magnetization study was carried out under hydrostatic pressures of up to ~ 0.8 GPa. Hydrogenation is found to totally suppress the antiferromagnetic order of (Lu0.8Ce0.2)2Fe17 by favoring domination of the ferromagnetic interactions which increases the magnetic ordering temperature from 247 to 300 K. The application of pressure decreases the Curie temperature and induces the non-collinearity of the magnetic moments in (Lu0.8Ce0.2)2Fe17H0.4, confirming the strong influence of hydrogenation on exchange coupling.
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Dates et versions

hal-00984937 , version 1 (20-05-2021)

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E. A. Tereshina, A. V. Andreev, J. Kamarád, Olivier Isnard, K. Watanabe. (Lu0.8Ce0.2)2Fe17 single crystal under hydrostatic and 'negative' pressure induced by hydrogenation. Journal of Physics: Condensed Matter, 2011, 23, pp.6004. ⟨10.1088/0953-8984/23/21/216004⟩. ⟨hal-00984937⟩

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