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Accession number:  5702943

Title:  X-ray characterization of the new nasicon compositions Na3Zr2-x/4Si2-xP1+xO12 with x=0.333, 0.667, 1.000, 1.333, 1.667

Authors:  Lucco-Borlera, M.1 ; Mazza, D.1 ; Montanaro, L.1 ; Negro, A.1 ; Ronchetti, S.1 

Author affiliation:  1 Dipt. di Sci. dei Mater. e Ingegneria Chimica, Politecnico di Torino, Italy

Serial title:  Powder Diffraction

Abbreviated serial title:  Powder Diffr. (USA)

Volume:  12

Issue:  3

Publication date:  Sept. 1997

Pages:  171-4

Language:  English

ISSN:  0885-7156

CODEN:  PODIE2

Document type:  Journal article (JA)

Publisher:  AIP for JCPDS-Int. Centre for Diffraction Data

Country of publication:  USA

Material Identity Number:  P919-1997-002

Abstract:  It is known that solids with composition Na3Zr2Si2PO12 heated at 1200°C crystallize in the nasicon structure. This material shows a high ionic conductivity that represents an interesting improvement in the field of solid electrolytes. Our experimental results allow to establish for the first time that nasicon structures are stable along the compositional join Na3Zr2-x/4Si2-xP1+xO12 with x extending from 0 to 1.667. These structures are characterized by a Zr underoccupation of octahedral sites and a constant number of Na+ ions. This fact envisages a possible application of these materials in the field of ceramic sensors and ionic conductors

Number of references:  18

Inspec controlled terms:  crystal structure  -  ionic conductivity  -  sodium compounds  -  solid electrolytes  -  X-ray diffraction

Uncontrolled terms:  Na3Zr2-x/4Si2-xP1+xO12  -  nasicon composition  -  structure  -  ionic conductivity  -  solid electrolytes  -  ceramic sensors  -  X-ray characterization  -  1200 C  -  Na3Zr2Si2PO12

Inspec classification codes:  A6160 Crystal structure of specific inorganic compounds  -  A6630H Self-diffusion and ionic conduction in solid nonmetals

Numerical data indexing:  temperature 1.47E+03 K

Chemical indexing:  Na3Zr2Si2PO12/ss Na3/ss O12/ss Si2/ss Zr2/ss Na/ss Si/ss Zr/ss O/ss P/ss

Treatment:  Experimental (EXP)

Discipline:  Physics (A)

Database:  Inspec

  Copyright 1997, IEE

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