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Powder diffraction study of arsenic-substituted nasicon structures MeZr2As(3−x)PxO12 (Me=Na+, K+)

Published online by Cambridge University Press:  10 January 2013

D. Mazza,
M. Lucco-Borlera and
S. Ronchetti
D. Mazza
Affiliation:
Dipartimento di Scienza dei Materiali e Ingegneria Chimica—Politecnico di Torino, Italy
M. Lucco-Borlera
Affiliation:
Dipartimento di Scienza dei Materiali e Ingegneria Chimica—Politecnico di Torino, Italy
S. Ronchetti
Affiliation:
Dipartimento di Scienza dei Materiali e Ingegneria Chimica—Politecnico di Torino, Italy
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Abstract

Three new mixed oxides having the nasicon structure and containing arsenic(V) as tetrahedral ion were prepared and X-ray analyzed. The stoichiometry of the three phases can be expressed by the comprehensive notation MeZr2As(3−x)PxO12 where Me stands for Na+ or K+, x equals to 0 and 1.5 when Me=Na, while x equals to 1.5 when Me=K. For two other compositions of the above series, the powder patterns were calculated on the basis of the structural data from single crystal determinations, thus permitting us to complete the characterization of the solids, with nasicon framework, deriving from MeZr2P3O12 (Me=Na+, K+) by partial (50%) or complete (100%) substitution of As for P.

Key words: nasicon, ionic conductors, phosphates, arsenates

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Type
Research Article
Information
Powder Diffraction , Volume 13 , Issue 4 , December 1998, pp. 227 - 231
Copyright
Copyright © Cambridge University Press 1998

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