Abstract
We present an investigation of the influence of four dopant lithium concentrations on the electrical properties of CuO. X-ray measurements have revealed a single phase formed up to 4.2 at. % of Li, and a second phase formed, Li2CuO2, in the case of 10.5 at. % of Li concentration. The log(ρ/T) vs 1/T data are better represented by two straight lines than by one and show an initial strong decrease of the conduction activation energies for small contents of Li (<1.7 at. %), which becomes weak for larger contents. The change in slope observed in the resistivity measurements as a function of temperature has also been investigated by calorimetric measurements, revealing a specific heat anomaly which can be associated with the antiferromagnetic order transition.
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Lanza, F., Feduzi, R. & Fuger, J. Effects of lithium oxide on the electrical properties of CuO at low temperatures. Journal of Materials Research 5, 1739–1744 (1990). https://doi.org/10.1557/JMR.1990.1739
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DOI: https://doi.org/10.1557/JMR.1990.1739