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Synthesis and structural elucidation of Ba4Nd3F17: A powder XRD study

Published online by Cambridge University Press:  06 March 2012

V. Grover,
S. N. Achary,
S. J. Patwe and
A. K. Tyagi
V. Grover
Affiliation:
Applied Chemistry Division, Bhabha Atomic Research Centre, Mumbai (400 085), India
S. N. Achary
Affiliation:
Applied Chemistry Division, Bhabha Atomic Research Centre, Mumbai (400 085), India
S. J. Patwe
Affiliation:
Applied Chemistry Division, Bhabha Atomic Research Centre, Mumbai (400 085), India
A. K. Tyagi*
Affiliation:
Applied Chemistry Division, Bhabha Atomic Research Centre, Mumbai (400 085), India
*
a)Author to whom correspondence should be addressed. Electronic mail: aktyagi@magnum.barc.ernet.in
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Abstract

The compound Ba4Nd3F17 was prepared by heating predried BaF2 and EuF3 (4:3) at 900 °C for 8 h in static vacuum. The polycrystalline sample obtained was characterized by Rietveld refinement of the observed powder diffraction data with the starting model of Ba4Y3F17. This compound crystallizes in a rhombohedral lattice with unit-cell parameters, a=11.2818(3) and c=20.7788(11) Å, Z=6, (Space group R 3, No. 148). The Rp, Rwp and Rexp factors were 9.5%, 12.9% and 10.9%, respectively.

Keywords

anion-excess fluoritebarium neodymium fluorideRietveld refinement

Information

Type
New Diffraction Data
Information
Powder Diffraction , Volume 17 , Issue 4 , December 2002, pp. 326 - 330
Copyright
Copyright © Cambridge University Press 2002

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