A reassessment of the molar volume of silicon and of the Avogadro constant

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 2001Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Transactions on Instrumentation and Measurement, volume 50, pages 593-597 (issn: 0018-9456,

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Authors: Paul De Bievre; Staf Valkiers; Rüdiger Kessel; P. D. P. Taylor; Peter Becker 0003; Horst Bettin; Anna Peuto; +7 Authors

doi: 10.1109/19.918199

A reassessment of the molar volume of silicon and of the Avogadro constant

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Abstract

An "absolute" value for the molar volume of Si in Si single crystals is presented as 12.058 820 7(54) cm/sup 3/ mol/sup -1/ with a relative standard uncertainty of 4.5/spl middot/10/sup -7/. It is argued that the consistency of most of the molar volume determinations is useful for evaluating the quality of the Si single crystals involved. A value for the Avogadro constant is derived as 6.022 133 9(27)/spl middot/10/sup 23/ mol/sup -1/ having a relative standard uncertainty of 4.6/spl middot/10/sup -7/.

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