Ce3Pt23Si11 ferromagnet: unusual magnetic behavior brought to light by neutron studies

Christine Opagiste (1) , Rose-Marie Galéra (1) , Mehdi Amara (1) , Carley Paulsen (1) , S. Rols (2) , B. Ouladdiaf (2)

1 NEEL - MagSup - Magnétisme et Supraconductivité
2 ILL - Institut Laue-Langevin

The ternary system R-Pt-Si (R = rare earth element) triggers a lot of interest, due to peculiar physical behaviors of some compounds: unconventional superconductivity, heavy-fermion properties, coexistence of superconductivity and magnetic ordering..., such as CePt3Si, reported as the first non-centro symmetric heavy fermion superconductor. Actually, several studies let suppose a sample dependence of the superconductivity and for instance, in Ce deficient samples, the coexistence of a new phase, Ce3Pt23Si11, was suspected to interfere with superconducting properties. We have undertaken an extended investigation on this new phase.

Mots clés: Ce3Pt23Si11; cerium compound; neutron diffraction; neutron time of flight; ferromagnetism

Domaines: Electrons fortement corrélés [cond-mat.str-el]

Christine Opagiste, Rose-Marie Galéra, Mehdi Amara, Carley Paulsen, S. Rols, et al.. Ce3Pt23Si11 ferromagnet: unusual magnetic behavior brought to light by neutron studies. 2011. ⟨hal-00677837⟩