Investigation of structure and electrical properties of Li0.5La0.5TiO3 ceramics via microwcave sintering

被引：48

作者：

Geng, H. X. ^{[1
]}

Mei, A. ^{[1
]}

Dong, C. ^{[2
]}

Lin, Y. H. ^{[1
]}

Nan, C. W. ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, Beijing 100080, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 481卷 / 1-2期

关键词：

Li0.5La0.5TiO3; Microwave sintering method; Lattice structure; Ionic conductivity; LITHIUM LANTHANUM TITANATE; FAST IONIC CONDUCTORS; MICROWAVE SYNTHESIS; PEROVSKITE; CONDUCTIVITY; LA2/3-XLI3XTIO3; LI3XLA2/3-XTIO3;

D O I：

10.1016/j.jallcom.2009.03.038

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：

Electrolyte ceramic of lithium lanthanum titanate [Li0.5La0.5TiO3(LLTO)] was prepared by microwave sintering method. The lattice structure, microstructure and transport properties were studied and compared with those of the LLTO ceramics prepared via conventional sintering method. Though the sintering methods both led to pure perovskite LLTO phase, they produced different crystallites. The LLTO prepared via microwave technique presented cubic perovskite-type crystallite, while the LLTO via conventional method offered tetragonal crystallite. In addition, the microwave sintering resulted in the formation of better-grained LLTO ceramics but lower conductivity than the conventional one did. This was explained by considering the different microstructures and conduction mechanisms of lithium ions in the two cases. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：555 / 558

页数：4

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