Publications in Scientific Journals:

B. Chevalier, J-L. Bobet, M. Pasturel, E. Bauer, F. Weill, R. Decourt, J. Etourneau:
"Ferromagnetic Behavior of the New Hydride CeNiSnH1.8(2)";
Chemistry of Materials, 15 (2003), 2181 - 2185.

English abstract:
Ferromagnetic Behavior of the New Hydride CeNiSnH1.8(2) <http://pubs.acs.org/images/entities/dagger.gif>

B. Chevalier,* <http://pubs.acs.org/images/entities/Dagger.gif> J-L. Bobet, <http://pubs.acs.org/images/entities/Dagger.gif> M. Pasturel, <http://pubs.acs.org/images/entities/Dagger.gif> E. Bauer, <http://pubs.acs.org/images/entities/sect.gif> F. Weill, <http://pubs.acs.org/images/entities/Dagger.gif> R. Decourt, <http://pubs.acs.org/images/entities/Dagger.gif> and J. Etourneau <http://pubs.acs.org/images/entities/Dagger.gif>

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), CNRS [UPR 9048], Université Bordeaux 1, Avenue du Docteur A. Schweitzer, 33608 Pessac Cedex, France, and Institut für Festkörperphysik, Technische Universitaet Wien, Wiedner Hauptstrasse 8-10, A-1040 Wien, Austria

Received November 28, 2002

Revised Manuscript Received February 25, 2003


The ternary stannide CeNiSn absorbs hydrogen at 250 <http://pubs.acs.org/images/entities/deg.gif> C under a pressure of PH2 = 5 MPa. The resulting hydride CeNiSnH1.8(2) crystallizes in the hexagonal ZrBeSi-type structure with a = 0.4392(2) nm and c = 0.8543(2) nm as unit cell parameters. Investigation by means of magnetization and electrical resistivity measurements show that (i) CeNiSnH1.8(2) exhibits a ferromagnetic order below TC = 7.0(2) K and (ii) Kondo scattering dominates the electrical properties. This study points out that hydrogenation of CeNiSn provokes a change of the ground state of cerium, from Kondo insulator to ferromagnetic behavior.

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