Abstract

The authors derive an expression for the magnetic susceptibility ( chi ) of a mixed-valent system in which there is a continuous valence transition to a nearly integral valent phase, taking into account the crystal electric field (CEF) splitting of the localised levels. As an example, they calculate chi of Ce0.76La0.14Th0.1 in which CEF excitations have been observed for the first time in a mixed-valent system. There is a good agreement with experimental results.

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