NMR Investigations in Li1.3Al0.3Ti1.7(PO4)3 Ceramics Part III: Local Dynamical Aspect Seen from Aluminum and Phosphorus Sites
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- 作者：Joël Emery ; Tomas Šalkus ; Maud Barré
- 刊名：Journal of Physical Chemistry C
- 出版年：2017
- 出版时间：January 12, 2017
- 年：2017
- 卷：121
- 期：1
- 页码：246-254
- 全文大小：384K
- ISSN：1932-7455
文摘
In compound Li1.3Al0.3Ti1.7(PO4)3, the investigation by solid state NMR of the T1 and T2 relaxation times of 27Al and 31P nuclei are used to study, versus temperature, the local dynamic properties at different lattice points. Our results can be summarized in the following way: (i) Inside the NASICON framework, these two nuclei do not undergo any diffusion motion. (ii) The motion of the skeleton M(IV)(PO4)3 induces fluctuations in the P–O and Al–O bonds, giving rise to quadrupolar fluctuations for 27Al and chemical shift fluctuations for 31P. (iii) The static distortions induced by these motions allow an explanation of some structural aspects.