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Results of X-Ray Powder Diffraction Round Robin Tests with Corundum Plates and Powder Samples

Published online by Cambridge University Press:  06 March 2019

V. Valvoda
Affiliation:
Charles University, Prague, Czech Republic
D. Rafaja
Affiliation:
Charles University, Prague, Czech Republic
R. Jenkins
Affiliation:
ICDD, Newtown Square, PA, USA
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Extract

Repetitions of the round robin test on powder diffractometer sensitivity and round robin test of intensity measurements, using two almost identical groups of participants, enabled a comparison to be made of results obtained in different tests. Two forms of corundum test samples were used: (i) sintered plates in tests A8 and A9, and (ii) powder samples in test Bl . A rough comparison of the influence of different methods of specimen preparation from the powder material in different laboratories in test Bl is thus possible with respect to the (almost) uniform sintered plates used in tests A8 and A9. The parameters under investigation were the line positions (and/or inter-planar d-spacing) and intensities of eleven reflections occurring at the 20 angles ranging from 25° to 136° for Cu Kα-radiation

Type
Research Article
Copyright
Copyright © International Centre for Diffraction Data 1995

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References

[1] Jenkins, R., “Round Robin on Powder Diffractometer Sensitivity”, ICDD Workshop at the Conference on Accuracy in Powder Diffraction II, Gaithersburg, May 26-29, NIST 1992.Google Scholar
[2] Schreiner, W. N., Jenkins, R. and Dismore, P. F., “XRD Instrument Sensitivity Results from a Round Robin Study”, Adv. X-Ray Analysis, 35A (1992) 333340.Google Scholar
[3] Valvoda, V. and Rafaja, D., “Intensity Round Robin”, Crystallographic Association publication, ISBN 80-901748-1-7, Prague 1995,Google Scholar
[4] Rafaja, D. and Valvoda, V., “Round Robin on Rietveld Refinement”, Crystallographic Association publication, ISBN 80-901748-2-5, Prague 1995.Google Scholar
[5] Jenkins, R. and Schreiner, W. N., “Intensity Round Robin Report”, Powder Diffraction, 4 (1989) 74400.Google Scholar
[6] Will, G., “POWLS: A Least-squares Program”, J. Appl. Cryst 12 (1979)483-485.Google Scholar
[7] Villars, P. and Calvert, L. D., “Pearson's Handbook of Crystallographic Data for Intermetallic Phases”, Vol. 2, American Society for Metals, Metals Park, 1986, p. 1047.Google Scholar
[8] Cline, J. P., Schiller, S. B. and Jenkins, R., “Introduction of a NIST Instrument Sensitivity Standard Reference Material for X-ray Powder Diffraction”, Adv. X-Ray Analysis, 35 (1992)341-352.Google Scholar
[9] Capková, P. and Valvoda, V., “Preferred Orientation in Powder Samples of Magnesium and Magnesium-Cadmium Alloys”, Czech. J. Phys. B24 (1974) 891900.Google Scholar