Fabrication and anisotropic electronic property for oriented Li1+x-yNb1-x-3yTix+4yO3 solid solution by slip casting in a high magnetic field

被引：5
|
作者：
Nakano, Hiromi [1 ]
Furuya, Shohei [1 ]
Yuasa, Motohiro [2 ]
Suzuki, Tohru S. [3 ]
Ohsato, Hitoshi [4 ]
机构：
[1] Toyohashi Univ Technol, 1-1 Hibariga Oka, Toyohashi, Aichi 4418580, Japan
[2] Doshisya Univ, 1-3 Miyakodani, Tatara, Kyotanabe 6100394, Japan
[3] Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
[4] Nagoya Ind Sci Res Inst, Chikusa Ku, 1-13 Yotsuya Dori, Nagoya, Aichi 4640819, Japan
来源：
ADVANCED POWDER TECHNOLOGY | 2017年 / 28卷 / 09期
基金：
日本学术振兴会;
关键词：
Li-Nb-Ti-O solid solution; Grain orientation; Superstructure; Crystal structure; Anisotropic electric property; DIELECTRIC-PROPERTIES; SUPERSTRUCTURE; MICROSTRUCTURE; LI2O-NB2O5-TIO2; LUMINESCENCE; CERAMICS; PHOSPHOR;
D O I：
10.1016/j.apt.2017.06.020
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The Li1+x-yNb1-x-3yTix+4yO3(0.06 <= x <= 0.33, 0 <= y <= 0.09) (hereafter LNT), forms a unique and periodical structure in the Li2O-Nb2O5-TiO2 ternary system. In this work, toward application of the unique qualities of an electro-ceramic, we fabricated oriented LNT balk ceramics by slip casting in a strong magnetic field of 12 T using various sizes of particles. The c-axis of the LNT powders was aligned parallel to the magnetic field. As a result, we found anisotropic- and unique- electric properties which were caused by a superstructure with intergrowth layers of corundum-type [Ti2O3](2+). The Qf value parallel to the c-axis was about five times greater than that of perpendicular to the c-axis. We first clarified the mechanism showing that the anisotropic Of value was caused by the anisotropic electron conductivity and the anisotropic bonding strength in the superstructure. (C) 2017 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
引用
收藏
页码：2373 / 2379
页数：7
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