Abstract An experimental set-up for ac-measurement of thermopower between room temperature and 1200K by using modulated laser-heating has been developed. The method shows many advantages compared with the conventional dc-measurements: convenience, applicability to small samples, possibility to measure the anisotropy of single crystals, and capability to continuously trace the temperature dependence of thermopower. The thermopower of a very short piece of pure Pt was measured with the present set-up to test the reliability and accuracy of our new method.
Received: 27 April 2005
Revised: 12 May 2005
Accepted manuscript online:
PACS:
72.15.Jf
(Thermoelectric and thermomagnetic effects)
Fund: Project supported by the National Natural Science Foundation of Chian (Grant No 10334080).
Cite this article:
Fan Zhen-Jun (樊振军), Zhang Dian-Lin (张殿琳) Laser-modulated ac measurement of high temperature thermopower 2005 Chinese Physics 14 1533
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