Competing dopants grain boundary segregation and resultant seebeck coefficient and power factor enhancement of thermoelectric calcium cobaltite ceramics
نویسندگان
چکیده
منابع مشابه
Grain boundary segregation in oxide ceramics
D PR O Abstract The factors which control grain boundary segregation in oxide ceramics are reviewed. These include grain boundary energy, cation–cation interactions, impurity cation size, as well as electrostatic interactions with the grain boundary space charge. In addition, an approach for measuring grain boundary segregation in those materials, as a function of the five macroscopic parameter...
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Mechanical and functional properties of materials are strongly dependent on the grain boundaries (GBs) which has different atomic structures due to the disorder in periodicity. The grain boundary structures are also influenced by the dopant and vacancies segregated at GBs, providing the functional properties, which cannot be observed in a perfect crystal. In order to control GB structures to im...
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ژورنال
عنوان ژورنال: Ceramics International
سال: 2017
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2017.06.029