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Powder diffraction data and Rietveld refinement of Hägg-carbide, χ-Fe5C2

Published online by Cambridge University Press:  10 January 2013

Johannes J. Retief
Johannes J. Retief
Affiliation:
Sasol Technology (Pty) Ltd., Research and Development Division, P.O. Box 1, 9570 Sasolburg, Free State, Republic of South Africa
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Abstract

The structure and powder diffraction data of Hägg-carbide (χ-Fe5C2) have been redetermined and improved by X-ray diffraction. Experimental values of 2θ, corrected for systematic errors, relative peak intensities, lattice spacings, and the Miller indices of 27 observed reflections up to 100° 2θ are reported. The unit cell is monoclinic (space group C2/c, Z=4) with a=11.588 Å, b=4.579 Å, c=5.059 Å, and β=97.75°. The crystal structure has been refined by Rietveld analysis, resulting in Rwp=0.073.

Keywords

Hägg-carbidestructureRietveld refinementpowder data

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Type
Research Article
Information
Powder Diffraction , Volume 14 , Issue 2 , June 1999, pp. 130 - 132
Copyright
Copyright © Cambridge University Press 1999

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