Jump to ContentJump to Main Navigation
Show Summary Details
More options …

Zeitschrift für Kristallographie - Crystalline Materials

Editor-in-Chief: Pöttgen, Rainer

Ed. by Antipov, Evgeny / Boldyreva, Elena V. / Friese, Karen / Huppertz, Hubert / Jahn, Sandro / Tiekink, E. R. T.

IMPACT FACTOR 2017: 1.263
5-year IMPACT FACTOR: 2.057

CiteScore 2017: 2.65

See all formats and pricing
More options …
Volume 140, Issue 5-6


A nuclear magnetic resonance study of the phase transition in anorthite, CaAl2Si2O8

J. L. Staehli / D. Brinkmann
Published Online: 2010-07-28 | DOI: https://doi.org/10.1524/zkri.1974.140.5-6.360


The nuclear magnetic resonance (NMR) of 27A1 in anorthite (CaAl2Si2O8) has been studied as a function of temperature. At the critical temperature Tc = 241 ± 4°C a complete reversible structural phase transition takes place: two sites each out of the eight inequivalent Al sites of the low-temperature phase become equal at Tc resulting in only four inequivalent sites in the high-temperature phase. The field gradient tensors at the Al nuclear sites have been determined for temperatures below and above the transition.

From the results follows that the (Al,Si)O2 framework becomes body-centered at Tc. The NMR results are consistent with x-ray structure investigations if one assumes for the high-temperature phase a “jumping” of the Ca atoms between the two split positions.

The existence of two kinds of domains with different Bravais lattices would contradict the NMR results.

About the article

Published Online: 2010-07-28

Published in Print: 1974-12-02

Citation Information: Zeitschrift für Kristallographie - Crystalline Materials, Volume 140, Issue 5-6, Pages 360–373, ISSN (Online) 2196-7105, ISSN (Print) 2194-4946, DOI: https://doi.org/10.1524/zkri.1974.140.5-6.360.

Export Citation

© 2015 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München.Get Permission

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

R.A. Marino, H.R. Wenk, J.A. Apps, and S.M. Klainer
Journal of Molecular Structure, 1980, Volume 58, Page 445
J. L. Staehli and D. Brinkmann
Zeitschrift für Kristallographie - Crystalline Materials, 1974, Volume 140, Number 5-6
Subrata Ghose, R. K. McMullan, and H.-P. Weber
Zeitschrift für Kristallographie - Crystalline Materials, 1993, Volume 204, Number 2
Dorian M. Hatch and Subrata Ghose
Physics and Chemistry of Minerals, 1989, Volume 16, Number 6, Page 614
Simon A. T. Redfern and Ekhard Salje
Physics and Chemistry of Minerals, 1992, Volume 18, Number 8, Page 526
R. J. Kirkpatrick and B. L. Phillips
Applied Magnetic Resonance, 1993, Volume 4, Number 1-2, Page 213

Comments (0)

Please log in or register to comment.
Log in