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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 2016: 1.432

CiteScore 2017: 1.30

SCImago Journal Rank (SJR) 2017: 0.403
Source Normalized Impact per Paper (SNIP) 2017: 0.632

Online
ISSN
1865-7109
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Volume 42, Issue 6

Issues

The Structures of Two Hole Centers in the Mineral Brasilianite NaAl3(PO4)2(OH)4

K. D. Landrath / G. Lehmann
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/zna-1987-0608

Two hole centers were detected in natural brazilianite by EPR at X-band and temperatures between 20 and 300 K. For the more intense center a hyperfine splitting (hfs) due to two nonequivalent Al nuclei could be completely analyzed by comparison of the hfs patterns with simulations for 1 ≦ A1/A2 ≦1.4. The orientation of the principle axes of these hfs tensors allowed to assign this hole to a specific oxygen in the lattice. The phosphorus bound to it is evidently exchanged against a lower valency cation, most likely Si4+ . In the second center a hfs splitting due to one Al and one P nucleus was identified. Although a complete analysis of their hfs tensors was not possible, this center could also be assigned to a particular oxygen for which evidently one adjacent Al is exchanged against a divalent ion.

About the article

Received: 1987-02-23

Published Online: 2014-06-02

Published in Print: 1987-06-01


Citation Information: Zeitschrift für Naturforschung A, Volume 42, Issue 6, Pages 572–576, ISSN (Online) 1865-7109, ISSN (Print) 0932-0784, DOI: https://doi.org/10.1515/zna-1987-0608.

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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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