Fast Seebeck coefficient measurement based on dynamic method

被引：20
|
作者：
Zhou, Yang [1 ]
Yang, Donghua [1 ]
Li, Liangliang [1 ]
Li, Fu [1 ,2 ]
Li, Jing-Feng [1 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Grad Sch Shenzhen, Adv Mat Inst, Shenzhen 518055, Peoples R China
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 05期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
THERMOELECTRIC POWER; TEMPERATURE; RESISTIVITY; THERMOPOWER; FILMS;
D O I：
10.1063/1.4876595
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A setup based on dynamic method was developed for fast Seebeck coefficient measurement from room temperature to 473 K. Two T-type thermocouples with a response time of less than 0.1 s were used to measure the dynamic temperatures of the sample. The Cu wires of the two thermocouples served as leads for Seebeck voltage measurement. The dynamic temperature feature of the setup was characterized. Test measurements were conducted with LaCo0.9Cu0.1O3 and LaCo0.85Cu0.15O3 samples with the customized setup, and the results had a difference of +/-8.4% compared with the data provided by ZEM-2 (Ulvac-Riko, Japan), which showed that the Seebeck measurement with the customized setup was reliable. In addition, the error on the Seebeck coefficient caused by the dynamic variation of temperature was discussed. The setup described in this paper has the advantage of fast Seebeck coefficient measurement with a measurement speed of about 14-23 K min(-1). (C) 2014 AIP Publishing LLC.
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页数：5
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