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The mechanism of electronic conduction in the battery cathode material NiPS3 is studied. Single crystals of new n- and p-type forms are obtained by doping with Sc and Li, respectively. The temperature-dependence of their dc conductivity and the frequency-dependence of their ac conductivity are measured, together with their infrared spectra and Hall effect. The results suggest that the Li-doped compound has a polaronic hopping conductivity mechanism. In the Sc-doped material, there appears to be band-like conduction with a Hall mobility of 2 cm2 V−1 s−1.
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Foot et al. (1986) studied this question.
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