Work

A setup for Seebeck coefficient measurement through controlled heat pulses

Year: 2019

Type: article

Abstract: A setup is designed for measuring the Seebeck coefficient (S) of materials in the form of thin films, bars, and wires. The main feature of this setup is its control in heating and cooling cycles. In this setup, a heat pulse is used to generate the temperature gradient. To demonstrate the capabilities of this setup, S versus T of standard wire samples such as Au–Fe (0.07%), chromel, Pt, and thin films of Pt and F doped SnO2 are presented. The standard uncertainty of the repeatability in the S measurement is found to be ∼±0.056 μV/K while the temperature stability is ∼±10 mK (at 320 K), estimated for a chromel wire sample. We have tested the setup in the temperature range 100 K–320 K, while it does not have any intrinsic limitations in going down to liquid He temperatures. For temperatures above 320 K, the limitation is due to gluing materials such as varnish.

Source: Review of Scientific Instruments

DOI: 10.1063/1.5116160

Authors: Abdul Ahad, D. K. Shukla

Institutions: Aligarh Muslim University, UGC DAE Consortium for Scientific Research

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Department of Science and Technology, Ministry of Science and Technology, India, University Grants Commission

Awards: G1100200962, G5233353040