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X-ray powder diffraction data for κ-Al2O3

Published online by Cambridge University Press:  10 January 2013

M. Halvarsson ,
V. Langer  and
S. Vuorinen
M. Halvarsson
Affiliation:
Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
V. Langer
Affiliation:
Department of Inorganic Environmental Chemistry, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
S. Vuorinen
Affiliation:
Research and Development, Seco Tools AB, SE-737 82 Fagersta, Sweden
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Abstract

X-ray powder diffraction data for κ-Al2O3 are reported. It was concluded that κ-Al2O3 belongs to the orthorhombic crystal system with space group Pna21. The lattice parameters were found to be a=4.8351(3) Å, b=8.3109(5) Å, c=8.9363(3) Å. There are 16 Al3+ and 24 O2− in the unit cell, and thus the number of chemical formulas in the unit cell, Z, is 8. The volume V of the unit cell is equal to 359.09(6) Å3 and the theoretical density Dx is 3.772 g/cm3. The Smith–Snyder (F20) and the de Wolff (M20) values for these data are 136.1 (0.0059, 25) and 98.4, respectively.

Keywords

kappa-alumina
Type
Research Article
Information
Powder Diffraction , Volume 14 , Issue 1 , March 1999 , pp. 61 - 63
Copyright
Copyright © Cambridge University Press 1999

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References

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