Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5440388 | Journal of the European Ceramic Society | 2017 | 5 Pages |
Abstract
Thermoelectric properties of lantanide doped Sr0.7Ba0.3Nb2O6 ceramics were investigated in the temperature range from 323 K to 1073 K. A better electrical conductivity is obtained in the sample with larger ionic radius of doping element. Thus, the highest PF value is achieved in La-doped sample. The NbO2 second phase is counterproductive to reduce the lattice thermal conductivity, so La-doped sample without impurity shows low thermal conductivity. Thus, La-doped sample shows an excellent thermoelectric performance ZT â¼Â 0.35. The small average grain size and the nano-sized phases are observed in Gd and Dy doped samples, both of which contribute to scattering phonons, resulting in low thermal conductivities.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yi Li, Jian Liu, Yacui Zhang, Yufei Chen, Jichao Li, Wenbin Su, Hongchao Wang, Jinze Zhai, Teng Wang, Chunlei Wang,