23Na NMR study of the nasicon system Na1+xZr2(PO4)3-x(SiO4)x

✍ Scribed by C. Jäger; S. Barth; A. Feltz

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 264 KB
• Volume: 154
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(89)87435-4

✦ Synopsis

The solid solution Na,+ar,(P0,),_,( ),has been investigated by *)Na NMR. The parameters of the quadrupole tensor of the Na( 1) positions in NaZr2(P04), are yq= 1.2kO.l MHz and ~=0.04+0.04. Those for the Na( 1) and Na(2) sites in Na,Zr,(SiO,), are found to be Na( 1): vq= 1.04+0.1 MHz, ~=0.84?0.7; Na(2): v,=C1.87+0.05 MHz, ~=0.53+0.4 with an intensity ratio for the lines of approximately I : 3, as expected. The random substitution of phosphorus atoms on their lattice sites by silicon atoms for increasing x leads to a distribution of the parameters of the quadrupole tensors. Increasing substitution strongly affects the asymmetry of the electric field gradient.