Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
3-26-2010
Journal or Book Title
Measurement Science and Technology
Volume
21
Issue
5
First Page
055104
DOI
10.1088/0957-0233/21/5/055104
Abstract
An experimental setup was developed for the measurement of the thermoelectric power (TEP, Seebeck coefficient) in the temperature range from 2 to 350 K and magnetic fields up to 140 kOe. The system was built to fit in a commercial cryostat and is versatile, accurate and automated; using two heaters and two thermometers increases the accuracy of the TEP measurement. High density data of temperature sweeps from 2 to 350 K can be acquired within 16 h and high density data of isothermal field sweeps from 0 to 140 kOe can be obtained within 2 h. Calibrations for the system have been performed on a platinum wire and Bi2Sr2CaCu2O8 + δ high-Tc superconductors. The measured TEP of phosphor bronze (voltage lead wire) turns out to be very small; the absolute TEP value of the phosphor bronze wire is much less than 0.5 µV K−1 below 80 K. For copper and platinum wires measured against the phosphor bronze wire, the agreement between measured results and the literature data is good. To demonstrate the applied magnetic field response of the system, we report measurements of the TEP on single crystal samples of LaAgSb2 and CeAgSb2 in fields up to 140 kOe.
Copyright Owner
IOP Publishing Ltd
Copyright Date
2010
Language
en
File Format
application/pdf
Recommended Citation
Mun, Eundeok; Bud’ko, Sergey L.; Torikachvili, Milton S.; and Canfield, Paul C., "Experimental setup for the measurement of the thermoelectric power in zero and applied magnetic field" (2010). Physics and Astronomy Publications. 691.
https://lib.dr.iastate.edu/physastro_pubs/691
Comments
This is a peer-reviewed, un-copyedited version of an article accepted for publication/published in Measurement Science and Technology. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at DOI: 10.1088/0957-0233/21/5/055104. Posted with permission.