Metamagnetic behaviour of Nd3Pt23Si11

Christine Opagiste (1) , Martin Jackson (1) , Rose-Marie Galéra (1) , Elsa Lhotel (1) , Carley Paulsen (1) , Bachir Ouladdiaf (2)

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

In the course of studying the R3Pt23Si11 series (R=rare earth), we have recently synthesized Nd3Pt23Si11. It crystallizes in a face-centered cubic structure ( Fm-3m space group) with a lattice parameter of 16.8493(4) Å at room temperature. Heat capacity and magnetic measurements show the existence of a magnetic transition at 1.6K. Measurements of the susceptibility and magnetization down to 95mK reveal metamagnetic behaviour confirming antiferromagnetic ordering. Powder neutron diffraction experiments show that the magnetic propagation vectors k=[000] and that the 6 neodymium moments in the unit cell are antiferromagnetically coupled in pairs.

Mots clés: Rare earthintermetallic; Metamagnetism; Antiferromagnetism

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

Christine Opagiste, Martin Jackson, Rose-Marie Galéra, Elsa Lhotel, Carley Paulsen, et al.. Metamagnetic behaviour of Nd3Pt23Si11. Journal of Magnetism and Magnetic Materials, 2013, 340, pp.46-49. ⟨10.1016/j.jmmm.2013.03.031⟩. ⟨hal-00816130⟩