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Short-range order in a NASIGLAS sample by X-ray diffraction

✍ Scribed by G. Ennas; A. Musinu; G. Piccaluga; G. Pinna; M. Magini

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
521 KB
Volume
141
Category
Article
ISSN
0009-2614

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✦ Synopsis

X-ray diffraction measurements have been performed on NASIGLAS and LISIGLAS glasses of the same molar ratios. The difference curve, calculated by subtracting the radial distribution function of the LISIGLAS sample from that of the NARIGLAS sample, displays peaks from the distribution of nearest-neighbour atoms around Na+ atoms. A quantitative analysis showed that the Na+ environment is not a regular polyhedron; the Na+ coordination number is significantly lower than that obtained in the corresponding crystalline counterparts (NARICON). The possible connection of this result with the different conductivity of NASIGLAS and NASICON samples is discussed.

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