Double NASICON-type cell: ordered Nd3+ distribution in Li0.2Nd0.8/3Zr2(PO4)3
Abstract
The NASICON compound Li0.2Nd0.8/3Zr2(PO4)3, synthesized by a sol–gel process, has been structurally characterized by (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