Magnetoelectric properties of flexible BiFeO3/Ni tapes
Viehland, Dwight D.
Jia, Q. X.
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We report ferroelectric (FE), ferromagnetic, and magnetoelectric (ME) properties of BiFeO3 films directly deposited on flexible magnetic Ni tapes. Without use of metal-oxide and/or noble metal buffer layer between the BiFeO3 and the Ni, both ferroelectric and magnetic properties of the film and the substrate are preserved. X-ray diffraction and transmission electron microscopy analyses confirm the formation of preferentially oriented (110) BiFeO3 film on Ni tapes. The BiFeO3 film has a saturation polarization and a piezoelectric d(33) coefficient of 69 mu C/cm(2) and 52 pm/V, respectively. The BiFeO3/Ni tape shows a magnetoelectric coefficient of 3.5 mV/cm.Oe. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4731780]