NMR Investigations in Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 Ceramics Part III: Local Dynamical Aspect Seen from Aluminum and Phosphorus Sites

Joël Emery (1) , Tomas Šalkus (2) , Maud Barré (1)

1 IMMM - Institut des Molécules et Matériaux du Mans
2 Faculty of Physics [Vilnius]

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.

Mots clés: Diseases and disorders; Quantum mechanics; Lithium; Phosphorus; Aluminum

Domaines: Matière Condensée [cond-mat]; Science des matériaux [cond-mat.mtrl-sci]

Joël Emery, Tomas Šalkus, Maud Barré. NMR Investigations in Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 Ceramics Part III: Local Dynamical Aspect Seen from Aluminum and Phosphorus Sites. Journal of Physical Chemistry C, 2016, 121 (1), pp.246-254. ⟨10.1021/acs.jpcc.6b11712⟩. ⟨hal-02462964⟩