Role of Na-doping-induced oxygen vacancies in the variation of electrical properties of NiO ceramics
作者： Seojin Yang , Jiwoong Kim , Sehwan Song , Dooyong Lee , Tae-Seong Ju
DOI: 10.1016/J.CERAMINT.2017.06.037
关键词: Ceramic 、 Secondary phase 、 Electrical resistivity and conductivity 、 Materials science 、 Concentration dependent 、 Solid-state 、 Mineralogy 、 Doping 、 Non-blocking I/O 、 Oxygen 、 Analytical chemistry
摘要: Abstract Na-doping concentration dependent electrical and structural properties of NiO ceramics were investigated. Various samples NaxNi1−xO (x = 0.00, 0.01, 0.03, 0.05, 0.07, 0.09, 0.11) prepared by using conventional solid state reaction. Most the showed decreased resistivity with increase while maintaining phase-pure face-centered cubic (fcc) structure, except in case sample containing 11% Na. For Na, slightly increased due to presence secondary phase. The possible physical origin this reduced is related number oxygen vacancies, for ceramics.
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