Crystal structure and physical properties of the new ternary compounds Nd3Pt23Si11 and Pr3Pt23Si11

Christine Opagiste (1) , Rose-Marie Galéra (1)

1 NEEL - MagSup - Magnétisme et Supraconductivité

The two ternary compounds, Pr3Pt23Si11 and Nd3Pt23Si11 have been synthesized for the first time. They both crystallize in the same Fm-3m cubic space group as Ce3Pt23Si11. Their lattice parameters are aPr = 16.8633(3) Å and aNd = 16.8498(4) Å for Pr3Pt23Si11 and Nd3Pt23Si11, respectively. From magnetic and heat capacity measurements, Nd3Pt23Si11 is found to present a magnetic transition at 1.6 K, whereas for Pr3Pt23Si11, the magnetic susceptibility shows typical paramagnetic Van Vleck behavior at low temperatures.

Mots clés: Rare earth compounds; Crystal structure determination; Magnetic properties; Heat capacity

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

Christine Opagiste, Rose-Marie Galéra. Crystal structure and physical properties of the new ternary compounds Nd3Pt23Si11 and Pr3Pt23Si11. Journal of Alloys and Compounds, 2012, 541, pp.403-406. ⟨10.1016/j.jallcom.2012.06.137⟩. ⟨hal-00725269⟩