Doped barium titanate nanoparticles

Bulletin of materials science

T K Kundu¹  A Jana²  P Barik¹ 

[1] Department of Physics, Siksha-Bhavan, Santiniketan 731 235, India$$Department of Physics, Siksha-Bhavan, Santiniketan 731 235, IndiaDepartment of Physics, Siksha-Bhavan, Santiniketan 731 235, India$$;Saldiha College, Saldiha, Bankura 721 312, India$$Saldiha College, Saldiha, Bankura 721 312, IndiaSaldiha College, Saldiha, Bankura 721 312, India$$

关键词: Nanostructured materials;    nanoferroelectrics;    BaTiO3.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 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 24â€�??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.

【 授权许可】

Unknown