Hydrogenation of the ternary silicides RENiSi (RE = Ce, Nd) crystallizing in the tetragonal LaPtSi-type structure - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2005

Hydrogenation of the ternary silicides RENiSi (RE = Ce, Nd) crystallizing in the tetragonal LaPtSi-type structure

Résumé

Hydrogenation of isostructural RENiSi (RE = Ce, Nd) intermetallic compounds has been performed. Neutron diffraction experiments on CeNiSiD1.2(1) indicates that D-atoms fully occupy the [Ce3Ni2]- and partially fill the [Ce3Si2]-bipyramidal sites. The strong hybridisation between Ce and D in these sites can explain the observed increase of the cerium valence after deuterium insertion. The magnetic phase diagram of NdNiSi has been established and highlights two antiferromagnetic transitions at TN1 = 6.8(2) K and TN2 = 2.8(2) K, which disappear after hydrogenation.
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hal-00090761 , version 1 (13-02-2024)

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Mathieu Pasturel, François Weill, Françoise Bourée, Jean-Louis Bobet, Bernard Chevalier. Hydrogenation of the ternary silicides RENiSi (RE = Ce, Nd) crystallizing in the tetragonal LaPtSi-type structure. Journal of Alloys and Compounds, 2005, 397 (1-2), pp.17-22. ⟨10.1016/j.jallcom.2005.01.015⟩. ⟨hal-00090761⟩
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