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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: kvg@igcar.ernet.in
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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

Aitken, E. A., Bartram, S. F., and Juenke, E. F. (1964). “Crystal chemistry of the rhombohedral MO3.3R2O3 compounds,” Inorg. Chem. INOCAJ 3, 949–953. ino, INOCAJ Google Scholar
Berndt, U., Tanamas, R., and Keller, C. (1976). “The ternary UO2-UO3-EuO1.5(EuO) system and investigation of Eu(II)-Actinide (IV)-Perovskites,” J. Solid State Chem. JSSCBI 17, 113–120. jss, JSSCBI Google Scholar
Hinatsu, Y., Masaki, N., and Fujino, T. (1988). “The crystal structure of La6UO12,” J. Solid State Chem. JSSCBI 73, 567–571. jss, JSSCBI Google Scholar
Jena, H., Asuvathraman, R., and Govindan Kutty, K. V. (2000). “Combustion synthesis and thermal expansion measurements of the rare earth-uranium ternary oxides RE6UO12 (RE=La, Nd, Sm),” J. Nucl. Mater. JNUMAM 280, 312–317. jnu, JNUMAM Google Scholar
Moore, J. J., and Feng, H. J. (1995). “Combustion synthesis of advanced materials. I. Reaction parameters,” Prog. Mater. Sci. PRMSAQ 39, 243–273; prm, PRMSAQ “Combustion synthesis of advanced materials. II. Classifications and modelling,” ibid. 39, 275–316.Google Scholar