Enhanced Magnetic and Dielectric Properties in Low-Content Tb-Doped BiFeO3 Nanoparticles

Bi1-xTbxFeO3 （x = 0, 0.01, 0.03 and 0.05） nanoparticles are synthesized by the sol-gel method. A single phase perovskite rhombohedral structure of all the samples is established from the Rietveld refined XRD patterns. The substitution of Tb^3＋ ions to Bi^3＋ decreases the particle size and enhances t...

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Published in:中国物理快报：英文版 2015-06 (6), p.122-126
Main Author: 郭旻琛 刘卫芳 吴萍 张鸿 徐训岭 王守宇 饶光辉
Format: Article
Language:English
Subjects:
BiFeO3
Rietveld
介电性能
强磁
掺杂
纳米颗粒
结核病
颗粒含量
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Summary:Bi1-xTbxFeO3 （x = 0, 0.01, 0.03 and 0.05） nanoparticles are synthesized by the sol-gel method. A single phase perovskite rhombohedral structure of all the samples is established from the Rietveld refined XRD patterns. The substitution of Tb^3＋ ions to Bi^3＋ decreases the particle size and enhances the ferromagnetic properties of this system. Interestingly a large maximum magnetization value of 1.73emu/g at 50kOe can be observed in 1% Tb-doped sample at 300 K. The decrease in band gap may result from the reduced particle size, while the leakage current density also decreases, which is mainly explained by the variation of oxygen vacancies.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/6/066101