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X-ray powder diffraction of RE6UO12 (RE=Eu, Gd, and Dy)

Published online by Cambridge University Press:  05 March 2012

Hrudananda Jena ,
R. Asuvathraman ,
M. V. Krishnaiah  and
K. V. Govindan Kutty
Hrudananda Jena
Affiliation:
Materials Chemistry Division, Chemical Group, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India
R. Asuvathraman
Affiliation:
Materials Chemistry Division, Chemical Group, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India
M. V. Krishnaiah
Affiliation:
Materials Chemistry Division, Chemical Group, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India
K. V. Govindan Kutty*
Affiliation:
Materials Chemistry Division, Chemical Group, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India
*
a)Author to whom correspondence should be addressed; electronic mail: [email protected]
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Abstract

Powder X-ray diffraction data are reported for RE6UO12 (RE=Eu, Gd, and Dy). The powders were prepared by a solution combustion method using urea as fuel. All compositions exhibit a rhombohedral structure with hexagonal unit cell parameters of a=1.012 67 (9) nm, c=0.9601 (1) nm for Eu6UO12; a=1.008 78 (6) nm, c=0.954 24 (7) nm for Gd6UO12; and a=0.998 06 (7) nm, c=0.944 03 (8) nm for Dy6UO12. The diffraction patterns of all the compounds are indexed on the R3¯ space group with Z=3. The a and c values decrease with increasing atomic number of the rare earth ion.

Keywords

powder diffractioncombustion synthesisEu6UO12Gd6UO12Dy6UO12
Type
New Diffraction Data
Information
Powder Diffraction , Volume 16 , Issue 4 , December 2001 , pp. 220 - 223
Copyright
Copyright © Cambridge University Press 2001

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References

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