Abstract:
We present measurements in the YbCu5-xAlx series, down to the 50 mK range, using 170Yb Mössbauer absorption spectroscopy and magnetisation measurements. In this series, the hybridisation between the Yb 4 f electrons and the conduction electrons is known to decrease as the Al content x increases. We apply the variational solution of the impurity Kondo problem to the interpretation of our data. We show that the Kondo temperature can be derived from the measured 4 f quadrupole moment and, for the magnetically ordered compounds (), we obtain the exchange energy as a function of the Al content. Our findings are in general agreement with Doniach's model describing the onset of magnetic ordering according to the relative values of the Kondo and exchange energy scales.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received 16 April 1998
Rights and permissions
About this article
Cite this article
Bonville, P., Vincent, E. & Bauer, E. Low temperature Kondo reduction of quadrupolar and magnetic moments in the YbCuAl series. Eur. Phys. J. B 8, 363–369 (1999). https://doi.org/10.1007/s100510050701
Issue Date:
DOI: https://doi.org/10.1007/s100510050701