| Zugriffsnummer | 30414 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Reference material for Seebeck coefficients |
| Autor(in); Institution |
Edler, Frank; 7.4, Temperatur, PTB-Berlin
Lenz, Ernst; 7.4, Temperatur, PTB-Berlin
Haupt, Sebastian; 7.4, Temperatur, PTB-Berlin
|
| Quelle/Jahr | International Journal of Thermophysics: 36 (2015), 2/3, 482 - 492 |
| ISSN | 0195-928X (PRINT) ; 1572-9567 (ONLINE) |
| DOI | |
| Verlag | Dordrecht: Springer |
| Konferenzangaben | TEMPMEKO 2013, Symposium on Temperature and Thermal Measurements in Industry and Science, Funchal, Madeira, 14-18, October, 2013, Portugal |
| Zusammenfassung | This paper describes a measurement method and a measuring system to measure absolute Seebeck coefficients of thermoelectric bulk materials with the aim of the establishment of reference materials for Seebeck coefficients. A temperature gradient (1 - 8) K is induced across the sample and the resulting voltage is measured by using two differential Au/Pt thermocouples. On the basis of the known absolute Seebeck coefficients of Au and Pt the unknown Seebeck coefficient of the sample is calculated. The measurements are performed in inert atmospheres (N2) and at low pressure (30 – 60) mbar in the temperature range between 300 K and 860 K. The measurement results of the Seebeck coefficients of metallic and semiconducting samples are presented. Achievable relative measurement uncertainties of the Seebeck coefficient are in the order of a few percent. |
