期刊
CHINESE PHYSICS LETTERS
卷 32, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0256-307X/32/6/066101
关键词
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资金
- National Natural Science Foundation of China [11004148, 51074112, 11104202]
- Natural Science Foundation of Guangxi Province [2012GXNSFGA060002]
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 Tb3+ ions to Bi3+ decreases the particle size and enhances the ferromagnetic properties of this system. Interestingly a large maximum magnetization value of 1.73 emu/g at 50 kOe 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.
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