CRYSTAL-STRUCTURE OF THE LI+ ION-CONDUCTING PHASES, LI-0.5-3X RE(0.5+X) TIO3 - RE=PR, ND, X-APPROXIMATE-TO-0.05

被引：46

作者：

SKAKLE, JMS ^{[1
]}

MATHER, GC ^{[1
]}

MORALES, M ^{[1
]}

SMITH, RI ^{[1
]}

WEST, AR ^{[1
]}

机构：

[1] RUTHERFORD APPLETON LAB,ISIS FACIL,DIDCOT OX11 0QX,OXON,ENGLAND

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1995年 / 5卷 / 11期

关键词：

D O I：

10.1039/jm9950501807

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The crystal structure of the C polymorph of the solid solutions, Li(0.5-3x)RE(0.5+x) TiO3 (RE = Pr, Nd) determined from powder neutron diffraction using Rietveld refinement, is an ordered perovskite of the GdFeO3 type, The structures of both phases are similar: the A sites contain (0.5+x) RE cations and (0.5-3x) off-centre lithium ions, with 2x sites vacant. Orthorhombic unit cell, RE = Nd: a = 5.43661 (7) Angstrom, b = 7.6647(1) Angstrom, c = 5.39752(7) Angstrom; RE = Pr: a = 5.43793(5) Angstrom, b = 7.66828(8) Angstrom, c = 5.40769(5) Angstrom; space group Pnma (no. 62), Conduction occurs by a Li+ vacancy mechanism through interconnecting A sites, avoiding those sites that are occupied by the RE cations.

引用

页码：1807 / 1808

页数：2

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