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Zeitschrift für Naturforschung A

A Journal of Physical Sciences

Editor-in-Chief: Holthaus, Martin

Editorial Board: Fetecau, Corina / Kiefer, Claus


IMPACT FACTOR 2017: 1.414

CiteScore 2018: 1.15

SCImago Journal Rank (SJR) 2018: 0.370
Source Normalized Impact per Paper (SNIP) 2018: 0.431

Online
ISSN
1865-7109
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Volume 47, Issue 1-2

Issues

Sodium Ion Exchange in Na1+xZr2SixP3-xO12 as Studied by 23Na Nutation NMR

Hiroshi Ohki / Nobuo Nakamura
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/zna-1992-1-255

Abstract

23Na two-dimensional nutation NMR was applied to Na1+x* Zr2SxP3-xO12 with x = 0, 1, and 2. The nutation spectrum in each compound consists of two clearly separated peaks corresponding to the two crystallographically inequivalent sodium sites. In the compound with x = 2 the nuclear quadrupole coupling constants (e2 Qq/h) and the asymmetry parameters (η) were by spectral simulation estimated to be 1.0 MHz and 0 for one site, and 1.5 MHz and 0.8 for the other site. The spectrum varies considerably on heating; the two peaks merge into a single peak at high temperatures due to fast ion exchange between the two different sites. For x = 0 and x = 1 the nutation spectra did not show any significant temperature dependence, suggesting that the rates of the sodium ion exchange are negligibly low.

Keywords: Nutation NMR; Quadrupole effect; Superionic conductor; Chemical exchange

About the article

Received: 1991-08-10

Published Online: 2014-06-02

Published in Print: 1992-02-01


Citation Information: Zeitschrift für Naturforschung A, Volume 47, Issue 1-2, Pages 319–324, ISSN (Online) 1865-7109, ISSN (Print) 0932-0784, DOI: https://doi.org/10.1515/zna-1992-1-255.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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