| Автор | V L Kuznetsov |
| Автор | D M Rowe |
| Дата выпуска | 2000-09-11 |
| dc.description | Polycrystalline samples of the filled skutterudites EuFe<sub>4</sub>Sb<sub>12</sub> and YbFe<sub>4</sub>Sb<sub>12</sub> were prepared by direct melting and hot pressing. The samples were characterized using x-ray powder diffraction and differential thermal analysis. It was found that both compounds melt incongruently at peritectic temperatures of 1023±5 K for EuFe<sub>4</sub>Sb<sub>12</sub> and 975±5 K for YbFe<sub>4</sub>Sb<sub>12</sub>. At room temperature these materials possess a positive Seebeck coefficient of 65-67 µV K<sup>-1</sup> and high carrier concentration in the range 5.6×10<sup>21</sup>-3.6×10<sup>21</sup> cm<sup>-3</sup>. The electrical transport properties were measured over the temperature range 100-860 K. For both compounds the electrical resistivity and Seebeck coefficient gradually increase with increasing temperature and for YbFe<sub>4</sub>Sb<sub>12</sub> exhibit a maximum at 760-800 K. The estimated ZT value of YbFe<sub>4</sub>Sb<sub>12</sub> is 0.4 at 670 K. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | High temperature electrical transport properties of the EuFe<sub>4</sub>Sb<sub>12</sub> and YbFe<sub>4</sub>Sb<sub>12</sub> filled skutterudites |
| Тип | paper |
| DOI | 10.1088/0953-8984/12/36/306 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 12 |
| Первая страница | 7915 |
| Последняя страница | 7921 |
| Аффилиация | V L Kuznetsov; NEDO Centre for Thermoelectric Energy Conversion, Cardiff University, Cardiff CF24 3TF, UK |
| Аффилиация | D M Rowe; NEDO Centre for Thermoelectric Energy Conversion, Cardiff University, Cardiff CF24 3TF, UK |
| Выпуск | 36 |
