Doped barium titanate nanoparticles

被引：33

作者：

Kundu, T. K. ^{[1
]}

Jana, A. ^{[2
]}

Barik, P. ^{[1
]}

机构：

[1] Siksha Bhavan, Dept Phys, Santini Ketan 731235, W Bengal, India

[2] Saldiha Coll, Saldiha 721312, Bankura, India

来源：

BULLETIN OF MATERIALS SCIENCE | 2008年 / 31卷 / 03期

关键词：

nanostructured materials; nanoferroelectrics; BaTiO3;

D O I：

10.1007/s12034-008-0078-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have synthesized nickel (Ni) and iron (Fe) ion doped BaTiO3 nanoparticles through a chemical route using polyvinyl alcohol (PVA). The concentration of dopant varies from 0 to 2 mole% in the specimens. The results from X-ray diffractograms and transmission electron micrographs show that the particle diameters in the specimen lie in the range 24-40 nm. It is seen that the dielectric permittivity in doped specimens is enhanced by an order of magnitude compared to undoped barium titanate ceramics. The dielectric permittivity shows maxima at 0.3 mole% doping of Fe ion and 0.6 mole% of Ni ion. The unusual dielectric behaviour of the specimens is explained in terms of the change in crystalline structure of the specimens.

引用

页码：501 / 505

页数：5

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