Abstract
Highly pure butterfly-shaped BiFeO3@BaTiO3 nanotubes have been synthesized through a sol–gel method. An obvious ferromagnetic behavior was obtained at room temperature, with a large coercive field (5,403 Oe) and high Mr/Ms value (0.52). The dielectric permittivity of BiFeO3@BaTiO3 nanotubes was found to be 1919, which is much higher than that of pure BFO nanostructure. The dielectric loss of BiFeO3@BaTiO3 nanotubes is low in the frequency range from 10 Hz to 1 MHz. The maximum magnetoelectric coefficient of BiFeO3@BaTiO3 nanotube is 0.272 μV/cm Oe. Moreover, the BiFeO3@BaTiO3 nanotubes have exhibited a better ferroelectric property with a large band gap of 3.2 eV which demonstrates the core–shell nanostructure.
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Zhao, Y., Miao, J., Meng, X.B. et al. Butterfly-shaped multiferroic BiFeO3@BaTiO3 core–shell nanotubes: the interesting structural, multiferroic, and optical properties. J Mater Sci: Mater Electron 24, 1439–1445 (2013). https://doi.org/10.1007/s10854-012-0947-7
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DOI: https://doi.org/10.1007/s10854-012-0947-7