Preparation and photoabsorption characterization of BiFeO3 nanowires

被引：317
作者：
Gao, F.
Yuan, Y.
Wang, K. F.
Chen, X. Y.
Chen, F.
Liu, J. -M. [1 ]
机构：
[1] Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Peoples R China
[2] Chinese Acad Sci, Ctr Phys Mat, Shenyang 110015, Peoples R China
[3] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 10期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2345825
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Perovskite-type polycrystalline BiFeO3 (BFO) nanowires (similar to 50 nm in diameter and similar to 5 mu m in length) were synthesized using the anodized alumina template technique. An energy band gap of similar to 2.5 eV was determined from the UV-visible diffuse reflectance spectrum, and its photocatalytic ability to produce O-2 was revealed under UV irradiation. Weak ferromagnetism at room temperature and superparamagnetism at low temperature were observed for the BFO nanowires, different from the antiferromagnetic order in bulk BFO, reflecting the significant size effects on the magnetic ordering of BFO. (c) 2006 American Institute of Physics.
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