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Sampling procedure for measuring Hall coefficients using the van der Pauw method

It is shown that care must be exercised in using digital equipment when making Hall measurements in a van der Pauw setup employing the ASTM standard method. This arises because of quantization error when working near the sensitivity limit of the equipment. For materials with small Hall mobilities (

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Published in:	Review of scientific instruments 1989-11, Vol.60 (11), p.3482-3484
Main Authors:	Ndlela, Zolili, Bates, Clayton W.
Format:	Article
Language:	English
Subjects:	Determination of fundamental constants Exact sciences and technology Metrology Metrology, measurements and laboratory procedures Physics
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description	It is shown that care must be exercised in using digital equipment when making Hall measurements in a van der Pauw setup employing the ASTM standard method. This arises because of quantization error when working near the sensitivity limit of the equipment. For materials with small Hall mobilities (
doi_str_mv	10.1063/1.1140497
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This arises because of quantization error when working near the sensitivity limit of the equipment. For materials with small Hall mobilities (<100 cm2/V s) this can lead to an incorrect specification of the carrier type and inconsistent mobility behavior. A simple averaging and sampling procedure is suggested to suppress this type of behavior and is found to be sufficient to obtain reliable and repeatable Hall voltages and coefficients.</abstract><cop>Woodbury, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.1140497</doi><tpages>3</tpages></addata></record>
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source	AIP - American Institute of Physics; AIP Digital Archive
subjects	Determination of fundamental constants Exact sciences and technology Metrology Metrology, measurements and laboratory procedures Physics
title	Sampling procedure for measuring Hall coefficients using the van der Pauw method
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