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Journal of Nanomaterials
Volume 2012 (2012), Article ID 238605, 5 pages
Research Article

Influence of La Doping on Magnetic and Optical Properties of Bismuth Ferrite Nanofibers

1State Key Laboratory of New Ceramics and Fine Processing, and Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
2Department of Geriatric Dentistry, School and Hospital of Stomatology, Peking University, Beijing 100081, China

Received 8 December 2011; Revised 1 March 2012; Accepted 2 March 2012

Academic Editor: Tong Lin

Copyright © 2012 Ziang Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The influence of La doping on the crystal structure, ferromagnetic, and optical properties of BFO nanofibers was investigated. B i 1 𝑥 L a 𝑥 F e O 3 ultrafine nanofibers were synthesized by the electrospinning method. The surface morphology and crystal structure of the as-spun and sintered fibers were not affected by the doping. The impurity phases of the BFO crystals were weakened with the increment of La concentration. The magnetization field curves showed that the magnetization weakened under low La doping proportion, but strengthened with the increase of the doped proportion. The magnetization curves also showed continuous strong enhancement of ferromagnetic behavior. The results of UV-vis and photoabsorption testing revealed little influence of La doping on the optical property.