Abstract
In this letter the authors report the ferroelectric and magnetoelectric (ME) properties of the cofired bilayer composite targeting low cost lead-free magnetic field sensor. The ME response was characterized as a function of the magnetic field direction and as a function of the dc bias. It was found that when the ac magnetic field is applied at 90° to the ferroelectric polarization axis of the sample, a ME response of 72mV∕cmOe was obtained without any dc bias. The magnitude of the ME coefficient reached the saturation at dc bias of 1000Oe having magnitude of 152mV∕cmOe. The scanning electron microscopy analysis showed the presence of clear interface boundary between the strained BaTiO3∕(Ni0.8Zn0.2)Fe2O4 region.
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