ChemInform Abstract: On the Location of Li+ Cations in the Fast Li-Cation Conductor La0.5Li0.5TiO3...
1
2000 structure structure (solids and liquids) D 2000 20 - 005 On the Location of Li + Cations in the Fast Li-Cation Conduc- tor La 0.5 Li 0.5 TiO 3 Perovskite. — A polycrystalline 7 Li-enriched La 0.5 Li 0.5 TiO 3 sample is prepared by heating a stoichiometric mixture of Li 2 CO 3 , La 2 O 3 , and TiO 2 at 1200 ◦ C followed by firing at 1350 ◦ C in air for 12 h. The crystal structure of the title compound is revised and indexed in a hexagonal unit cell, space group R 3c (Z = 6). Its structure is constituted by a network of TiO 6 octahedra slightly tilted along the pseudocubic rhombohedral axes. The Li cations are located in windows formed by four TiO 6 octahedra, thus they are fourfold coordinated to oxygen atoms in square-planar configuration. This Li environment is different from the tetrahedral-like coordination found in a previous study. — (ALONSO, JOSE A.; SANZ, JESUS; SANTAMARIA, JACOBO; LEON, CARLOS; VAREZ, ALEJANDRO; FERNANDEZ-DIAZ, MARIA T.; Angew. Chem., Int. Ed. 39 (2000) 3, 619-621; Inst. Cienc. Mater., CSIC, Univ. Auton., Cantoblanco, E-28049 Madrid, Spain; EN) 1
-
Upload
jose-a-alonso -
Category
Documents
-
view
212 -
download
0
Transcript of ChemInform Abstract: On the Location of Li+ Cations in the Fast Li-Cation Conductor La0.5Li0.5TiO3...
2000 structure
structure (solids and liquids)D 2000
20 - 005On the Location of Li+ Cations in the Fast Li-Cation Conduc-tor La0.5Li0.5TiO3 Perovskite. — A polycrystalline 7Li-enrichedLa0.5Li0.5TiO3 sample is prepared by heating a stoichiometric mixture ofLi2CO3, La2O3, and TiO2 at 1200 ◦C followed by firing at 1350 ◦C in air for12 h. The crystal structure of the title compound is revised and indexed in ahexagonal unit cell, space group R3c (Z = 6). Its structure is constituted by anetwork of TiO6 octahedra slightly tilted along the pseudocubic rhombohedralaxes. The Li cations are located in windows formed by four TiO6 octahedra, thusthey are fourfold coordinated to oxygen atoms in square-planar configuration.This Li environment is different from the tetrahedral-like coordination found ina previous study. — (ALONSO, JOSE A.; SANZ, JESUS; SANTAMARIA,JACOBO; LEON, CARLOS; VAREZ, ALEJANDRO; FERNANDEZ-DIAZ,MARIA T.; Angew. Chem., Int. Ed. 39 (2000) 3, 619-621; Inst. Cienc. Mater.,CSIC, Univ. Auton., Cantoblanco, E-28049 Madrid, Spain; EN)
1
