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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
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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References

Achary, S. N., Patwe, S. J., and Tyagi, A. K. (1999a). “Synthesis and characterization of mixed fluorides Y1−xCa2+1.5xF7, (−1.33≤x≤1.0),” Mater. Res. Bull. MRBUAC 34, 2093–2100. mrb, MRBUAC Google Scholar
Achary, S. N., Mohapatra, S., Patwe, S. J., and Tyagi, A. K. (1999b). “Synthesis and characterization of mixed fluorides Y1−xBa2+1.5xF7 (−1.33<x<1.0),” Mater. Res. Bull. MRBUAC 34, 1535–1543. mrb, MRBUAC CrossRefGoogle Scholar
Achary, S. N., Patwe, S. J., and Tyagi, A. K. (2002). “Powder XRD study of Ba4Eu3F17: A new anion rich fluorite related mixed fluoride,” Powder Diffr. PODIE2 17, 225–229. pdj, PODIE2 CrossRefGoogle Scholar
Bevan, D. J. M., Greis, O., and Strahle, J. (1980). “A new structural principle in anion-excess fluorite related superlattices,” Acta Crystallogr., Sect. A: Cryst. Phys., Diffr., Theor. Gen. Crystallogr. ACACBN A36, 889–890. aca, ACACBN CrossRefGoogle Scholar
Greis, O. and Haschke, J. M. (1982). “Rare earth fluorides” in Handbook on the Physics and Chemistry of Rare Earths, edited by Gschneidner, K. A. and Eyring, L. (North-Holland, Amsterdam), p. 387.Google Scholar
Grover, V., Achary, S. N., Patwe, S. J., and Tyagi, A. K. (2002). “Synthesis and characterization of Ba1−xNdxF2+x (0.00≤x≤1.00),” Mater. Res. Bull. (communicated).Google Scholar
Hoppe, R. (1979). “Effective coordination number and mean fictive ionic radius,” Z. Kristallogr. ZEKRDZ 150, 23. zek, ZEKRDZ CrossRefGoogle Scholar
Keiser, V. M.and Greis, O. (1980). “Preparation and properties of Fluorite related super-structure Phases Ba4RE3F17…,” Z. Anorg. Allg. Chem. ZAACAB 469, 164–171. zaa, ZAACAB Google Scholar
Maksimov, B. A., Solans, K., Dudka, A. P., Genkina, E. A., Font-Badria, M., Buchinskaya, I. I., Loshmanov, A. A., Golubev, A. M., Simonov, V. I., Font-Altaba, M., and Sobolev, B. P. (1996). “Fluorite-matrix-based Ba4R3F17 (R=Y,Yb) Crystal Structure…,” Crystallogr. Rep. CYSTE3 41, 56–64. cry, CYSTE3 Google Scholar
Patwe, S. J., Achary, S. N., and Tyagi, A. K. (2001). “Synthesis and characterization of Y1−xPb2+1.5xF7 (−1.33≤x≤1.0),” Mater. Res. Bull. MRBUAC 36, 597–605. mrb, MRBUAC CrossRefGoogle Scholar
Rodriguez-Carvajal, J. (2000). “Multi pattern Rietveld refinement program, Fullprof.2K. Version 1.6, July 2000.”Google Scholar
Sobolev, B. P. (1992). “Multi-component fluoride single crystals (Current status of their synthesis and prospects),” Growth Crystal. ZZZZZZ 18, 197–211.CrossRefGoogle Scholar
Tyagi, A. K.and Koehler, J. (2001). “Preparation and Structural elucidation of the new anion-excess fluorite variant Ba4Er3F17,” Solid State Sci. SSSCFJ 3, 689. a8m, SSSCFJ CrossRefGoogle Scholar