We report magnetic susceptibility results for the valence fluctuation system CeIn_3-xSnₓ. In the intermediate-valence regime the characteristic energy of spin fluctuations does not vary monotonically with solute e/a ratio, but oscillates with x in the same manner as the conduction-electron density of states. This provides experimental evidence for the role played by the conduction electrons in controlling the spin fluctuation energy.
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Lawrence et al. (1978) studied this question.
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