An instrument for the high temperature measurement of the Seebeck coefficient and electrical resistivity

Date

2014-05-01

Author

GÜNEŞ, Murat
Parlak, Mehmet
Ozenbas, Macit

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

188
views

0
downloads

A system for the simultaneous measurement of thermoelectric power and resistivity of one and/ or two samples over a temperature range of 300-1000 K in a vacuum chamber is designed and implemented. A sample probe is developed to provide its easy mounting and usage. In addition, two samples can be measured at the same time. Measurement accuracy has been enhanced by beadless thermocouples and micro-heaters that are specifically designed in order to minimize the 'cold-finger effect' and to eliminate some possible source of contact, design and measurement errors. A broad range of physical types and shapes of samples, such as bulk, bar or disc, can be measured by a software controlled system. A differential steady-state method has been applied for Seebeck coefficient measurement. Resistivity measurement is conducted with the axial technique of the four-point probe method. Platinum wire and a niobium rod are chosen as the standard samples. The total data error for the Seebeck coefficient and resistivity measurements is estimated to be less than 2.6% and 1%, respectively.

Subject Keywords

Instrumentation, Applied Mathematics

URI

https://hdl.handle.net/11511/39501

Journal

MEASUREMENT SCIENCE AND TECHNOLOGY

DOI

https://doi.org/10.1088/0957-0233/25/5/055901

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

A NEW CRYOSTAT AND TEMPERATURE CONTROLLER FOR TSC MEASUREMENTS OZDEMIR, S; DEMIRBAS, A; OZAVCI, E (IOP Publishing, 1993-03-01) A linear temperature controller and a cryostat have been developed to measure thermally stimulated current (TSC) in CdS, a-Si:H and CdTe in order to determine the trapping characteristic. In this paper, the temperature controller and the cryostat are described in detail. In addition, TSC spectra, at five different heating rates, for a CdS thin-film sample recorded with the developed system are given, The system controls the linear heating of a sample at temperatures between about 100 K and 373 K. The temper...
A new method to measure viscosity and intrinsic sound velocity of liquids using impedance tube principles at sonic frequencies Mert, Behiç; Campanella, OH (AIP Publishing, 2004-08-01) The attenuation of the sound energy produced by a liquid contained in a cylindrical tube (wave guide) depends on the liquid's viscosity, sound frequency, tube wall thickness, and tube material. By measuring the acoustic impedance of plane sound waves in a cylindrical wave guide, one can obtain the liquid's viscosity. Impedance measurements can also provide sound velocity in the liquid medium as another important physical characteristic. In this study a method using the impedance tube technique is presented....
A new wireless asynchronous data communications module for industrial applications EGE, Yavuz; Sensoy, Mehmet Gokhan; Kalender, Osman; Nazlibilek, Sedat; Citak, Hakan (Elsevier BV, 2013-10-01) All the sensors such as temperature, humidity, and pressure used in industry provide analog outputs as inputs for their control units. Wireless transmission of the data has advantages on wired transmission such as USB port, parallel port and serial port and therefore has great importance for industrial applications. In this work, a new wireless asynchronous data communications module has been developed to send the earth magnetic field data around a ferromagnetic material detected by a KMZ51 AMR sensor. The ...
A highly sensitive atomic force microscope for linear measurements of molecular forces in liquids PATİL, S; MATEİ, G; DONG, H; HOFFMANN, PM; Karakose, M; Oral, Ahmet (AIP Publishing, 2005-10-01) We describe a highly improved atomic force microscope for quantitative nanomechanical measurements in liquids. The main feature of this microscope is a modified fiber interferometer mounted on a five axis inertial slider which provides a deflection sensitivity that is significantly better than conventional laser deflection based systems. The measured low noise floor of 572.0 fm/root Hz provides excellent cantilever amplitude resolution. This allows us to operate the instrument far below resonance at extreme...
A finite element variational multiscale method for the Navier-Stokes equations Volker, John; Kaya Merdan, Songül (Society for Industrial & Applied Mathematics (SIAM), 2005-01-01) This paper presents a variational multiscale method (VMS) for the incompressible Navier-Stokes equations which is defined by a large scale space L-H for the velocity deformation tensor and a turbulent viscosity nu(T). The connection of this method to the standard formulation of a VMS is explained. The conditions on L-H under which the VMS can be implemented easily and efficiently into an existing finite element code for solving the Navier - Stokes equations are studied. Numerical tests with the Smagorinsky ...

Citation Formats

M. GÜNEŞ, M. Parlak, and M. Ozenbas, “An instrument for the high temperature measurement of the Seebeck coefficient and electrical resistivity,” MEASUREMENT SCIENCE AND TECHNOLOGY, pp. 0–0, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39501.