Issue
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
Page(s) C8-727 - C8-728
DOI https://doi.org/10.1051/jphyscol:19888330
Proceedings of the International Conference on Magnetism

J. Phys. Colloques 49 (1988) C8-727-C8-728

DOI: 10.1051/jphyscol:19888330

LOW TEMPERATURE PHASE TRANSITIONS IN THE HEAVY ELECTRON COMPOUND YbSb

P. Bonville1, J. M. Broto2, A. Fert2, F. Gonzalez-Jimenez3, 4, A. Hamzic5, F. Hulliger, P. Imbert1, G. Jehanno1, J. B. Marimon da Cunha1, 6, M. Miljak5 et H. R. Ott7

1  DPhG/PSRM, CEN Saclay, 91191 Gif-sur-Yvette Cedex, France
2  Lab. Phys. des Solides, Univ. Paris-Sud, 91405 Orsay, France
3  Lab. Phys. des Solides, Univ. Paris-Sud, 91405 Orsay, Francee
4  On leave from Dept. de Fisica, U.C.V., Caracas, Venezuela.
5  Inst. of Physics, Zagreb University, Yugoslavia
6  On leave from U.F.R.G.S., Porto-Alegre, Brasil.
7  Lab. Für Festkörperphys., ETH-Hönggerberg, 8093 Zürich, Switzerland


Abstract
Using Mössbauer spectroscopy on 170Yb, we detected two low temperature phase transitions in the heavy electron pnictide YbSb. Below TN = 0.32 K antiferromagnetic ordering of Yb3+ develops, and between 0.32 K and 5 K a phase exists whose nature is yet undetermined. Magneto-transport measurements confirm the heavy electron properties and the 5 K phase transition.