Intermediate valency of Eu in a cubic intermetallic compound Ce0.5Eu0.5Pd3

Pandey, Abhishek; Mazumdar, Chandan; Ranganathan, R.; Reddy, V. Raghavendra; Gupta, Ajay
May 2009
Applied Physics Letters;5/4/2009, Vol. 94 Issue 18, p182503
Academic Journal
We report on a change in the valency of the Eu ions in cubic EuPd3 upon Ce substitution. The resultant compound Ce0.5Eu0.5Pd3 exhibits a mixed-valent state of Eu, where the valency differs from +3 observed in the case of EuPd3. This change in the valency also manifests in significant modifications of magnetic properties of Ce0.5Eu0.5Pd3 in comparison to that of EuPd3 and CePd3. In contrast to the usually observed expansion of the lattice accompanied with such valence transitions, our results suggest that the lattice volume in the present case remains essentially constant with respect to EuPd3.


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