J. Phys. IV France
Volume 131, December 2005
Page(s) 339 - 340
Publié en ligne 18 janvier 2006
International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 339-340

DOI: 10.1051/jp4:2005131085

Thermodynamic properties of the spin-chain compound Pr3RuO7

M. Freamat, X.N. Lin, V. Durairaj, S. Chikara, G. Cao and J.W. Brill

Dept. of Physics and Astronomy, University of Kentucky, Lexington, KY 40506-0055, USA

We have measured the magnetic susceptibility ($\chi )$ and specific heat (c$_{\rm P})$ of single crystals of Pr3RuO7. The susceptibility indicates a Neel transition at T $_{\rm N }= 54$ K, with an unusually mean-field specific heat anomaly. While $\chi
$ indicates that all intrinsic moments order at T$_{\rm N}$, a Schottky-like anomaly in c$_{\rm P}$ suggests that there remains a small crystal-field splitting between a magnetic and non-magnetic state of the rare earth ions.

© EDP Sciences 2005