Intervalence charge transfer in mixed valence neodymium iodide melts: Electronic conductivity and optical absorption spectra
Abstract
We have studied the optical absorption spectra and the electrical conductivity of highly corrosive liquid NdI3–NdI2 mixtures at various temperatures up to 957 °C. The conductivity as a function of composition shows a clear maximum near the 1∶1 composition, indicative of a considerable partial electronic conductivity of ∼1 Ω−1 cm−1 and an activation energy Ea = 0.4 eV. Optical