The electrical conductivity of Ca-doped Co _1-xO single crystals was measured as a function of oxygen partial pressure, over the temperature range 1273–1673 K. The results were analyzed using Seebeck coefficient measurements, microstructural characterizations, EELS and X-ray diffraction experiments. From this set of results, we have shown that the influence of calcium on the thermodynamic and transport properties of cobaltous oxide is due to the reducing behavior of these solute cations, leading to both the shift of the Co/CoO phase boundary to higher P_O2 and the formation of singly ionized cobalt cations (Co⁺) in the stability range of CoO.

中文翻译：

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CaO对氧化钴热力学和输运性质的影响

_{在 1273–1673 K 的温度范围内，测量 Ca 掺杂的 Co 1-x} O 单晶的电导率与氧分压的关系。使用塞贝克系数测量、微观结构表征、EELS 和 X 射线分析结果衍射实验。从这组结果中，我们表明钙对氧化钴的热力学和输运性质的影响是由于这些溶质阳离子的还原行为，导致 Co/CoO 相界向更高的 P _O2移动并在CoO的稳定范围内形成单电离钴阳离子（Co ⁺）。