Journal
MATERIALS LETTERS
Volume 82, Issue -, Pages 57-60Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2012.05.058
Keywords
Multiferroic coaxial nanotube; Bi3.15Nd0.85Ti3O12; CoFe2O4; Ferroelectricity; Nanocomposites; Sol-gel preparation
Funding
- National Natural Science Foundation of China [11074193, 51132001]
- Fundamental Research Funds for the Central Universities [20102020101000018]
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The CoFe2O4 (CFO)/Bi3.15Nd0.85Ti3O12 (BNT) multiferroic composite coaxial nanotubes were prepared by a sol-gel template method. The morphologies of the coaxial nanotubes were characterized and the selected area electron diffraction patterns confirmed the coexistence of spinel CFO and perovskite BNT phase. The vibrating sample magnetometer measurements showed that the saturation magnetization and coercive field of the coaxial nanotubes were 1 emu/g and 0.7 kOe, respectively, which was contributed totally from the inner CFO nanotubes. The CFO/BNT coaxial nanotubes showed typical ferroelectric hysteresis loop, while the increased leakage current density is likely due to the high conductivity in the inner CFO nanotubes. Our study demonstrated that the CFO/BNT coaxial nanotubes were of both ferroelectric and magnetic features in nanoscale. (C) 2012 Elsevier B.V. All rights reserved.
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