Effects of MgO coating on electrical properties of BaTiO3

被引：3

作者：

Park, Jae Sung ^{[1
]}

Han, Young Ho ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Dept Adv Mat Engn, 300 Chunchundong, Suwon 440746, South Korea

来源：

ADVANCES IN NANOMATERIALS AND PROCESSING, PTS 1 AND 2 | 2007年 / 124-126卷

关键词：

BaTiO3; MgO; coating; dielectric; leakage current;

D O I：

10.4028/www.scientific.net/SSP.124-126.811

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Effects of MgO coating on electric properties of BaTiO3 have been studied in terms of microstructural development and substitution of Mg ion. MgO coated BaTiO3 particles were prepared by a homogeneous precipitation method and other powders by a conventional mixing method for a parallel study. MgO coated BaTiO3 exhibited homogeneous microstructure compared with mixed samples. XRD analysis revealed that Mg substitution for the Ti site in the MgO mixed sample was much greater than in the coated one. MgO coated BaTiO3 showed higher dielectric constants at the Curie temperature whereas mixed ones had higher dielectric constants at 60 degrees C similar to 80 degrees C. Electrical properties of MgO mixed and coated BaTiO3 were affected by the diffusion behavior of Mg in BaTiO3 lattice, which was confirmed by leakage currents.

引用

页码：811 / +

页数：2

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