Abstract Fully dense hot-pressed calcium cobalt oxide (Ca 3 Co 4 O 9 ) pellet exhibits textures with Lotgering factor of unity and supports the ideally aligned (00 l ), l = 2, 3, 4, 5 crystallographic planes associated in the ceramics. The DC electrical conductivity of the Ca 3 Co 4 O 9 pellets connected to metal/Ca 3 Co 4 O 9 -pellet/metal device structures in vertical and lateral configurations follow Mott's variable range hopping. The exhibition of anisotropic ratio of ~ 10 between the room temperature conductivity values in both the structures, reveal the presence of partially oriented textured grains in the currently developed Ca 3 Co 4 O 9 ceramics.

中文翻译：

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全致密钙钴氧化物织构陶瓷中的可变范围跳跃传导

摘要 完全致密的热压钴酸钙 (Ca 3 Co 4 O 9 ) 颗粒显示出具有统一 Lotgering 因子的纹理并支持理想排列的 (00 l ), l = 2, 3, 4, 5 与陶瓷相关的晶面. 与金属/Ca 3 Co 4 O 9 颗粒/金属器件结构连接的Ca 3 Co 4 O 9 颗粒在垂直和横向配置中的DC电导率遵循莫特的可变范围跳跃。两种结构中室温电导率值之间的各向异性比率约为 10，表明当前开发的 Ca 3 Co 4 O 9 陶瓷中存在部分取向的织构晶粒。