1Department of Physics, Eternal University, Baru Sahib, Sirmour (H.P.) 173101, India
2National Physical Laboratory, New Delhi 110012, India
3Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India
Adv. Mater. Lett., 2012, Current Issue, 3 (5), pp 371-375
DOI: 10.5185/amlett.2012.5352
Publication Date (Web): Sep 16, 2012
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E-mail: jaspreetsonam@yahoo.co.in
In the present work, structural, microstructural and magnetoelectric (ME) coupling of multiferroic Ba(Fe0.01Ti0.99)O3 (BFT1) nanowires have been studied. BFT1 nanowires were prepared by a hydrothermal method with reaction temperature 180 oC for 48 hours. The X-ray diffraction shows that BFT1 is polycrystalline with cubic phase. The calculated value of distortion ratio (c/a) is ~ 1. No impurity or extra phase is observed. The micrographs by transmission electron microscopy reveal nanowires like structure of BFT1with diameter lie in the range of ~ 40 - 50 nm and length greater than 1.5 μm. The ME coefficient measurement shows that the ME coupling under the effect of both ac and dc bias. It shows strong dependence on ac and dc bias applied field. The value of linear coefficient (α) called ME coefficient is calculated as ~ 16 mV/Oecm at a fixed frequency of 850 Hz. This ME coefficient α corresponds to induction of polarization by a magnetic field or of magnetization by an electric field. The observed optimum dc bias field at which the maximum magneto-electric coupling occurs is ~ 750 Oe. The magnetization hysteresis shows strong ferromagnetism.
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