Double NASICON-type cell: ordered Nd3+ distribution in Li0.2Nd0.8/3Zr2(PO4)3 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Dalton Transactions Année : 2008

Double NASICON-type cell: ordered Nd3+ distribution in Li0.2Nd0.8/3Zr2(PO4)3

Résumé

The NASICON compound Li0.2Nd0.8/3Zr2(PO4)3, synthesized by a sol–gel process, has been structurally characterized by TEM and powder diffraction (neutron and X-ray). It crystallizes in the space groupR[3 with combining macron] (No. 148): at room temperature, the Nd3+ ions present an ordered distribution in the [Zr2(PO4)3]− network which leads to a doubling of the classical c parameter (a = 8.7160(3) Å, c = 46.105(1) Å). Above 600 °C, Nd3+ diffusion occurs leading at 1000 °C to the loss of the supercell. This reversible cationic diffusion in a preserved 3D [Zr2(PO4)3]− network is followed through thermal X-ray diffraction. Ionic conductivity measurements have been undertaken by impedance spectroscopy, while some results concerning the sintering of the NASICON compound are given.

Dates et versions

hal-02273783 , version 1 (29-08-2019)

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Maud Barré, Marie-Pierre Crosnier-Lopez, Françoise Le Berre, Odile Bohnké, Emmanuelle Suard, et al.. Double NASICON-type cell: ordered Nd3+ distribution in Li0.2Nd0.8/3Zr2(PO4)3. Dalton Transactions, 2008, 182 (23), pp.3061-3069. ⟨10.1039/b713249b⟩. ⟨hal-02273783⟩
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