Optical, Magnetic, and Electrical Properties of New Binary CoTiO3-Modified Ba(Zr0.2Ti0.8)O3 System as Solid Solution
摘要
A new binary CoTiO3-modified Ba(Zr0.2Ti0.8)O3 system as a solid solution was successfully synthesized using a simple chemical method. The random incorporation of Co cations into the Ba(Zr0.2Ti0.8)O3 crystal reduced the optical band gap from 3.19 eV to 3.11 eV as CoTiO3 content increased. The maximum magnetic moment reached 16.8 emu/g, with a coercive field of 310 Oe and a remanent magnetic moment of 2.5 memu/g, for 9 mol.% CoTiO3. The addition of low levels of CoTiO3 suppressed the ferroelectric properties, while higher CoTiO3 content enhanced them, yielding maximum polarization of 4.52 μC/cm2, with remanent polarization of 1.81 μC/cm2 and a coercive electric field of 0.34 kV/mm. Our work underscores the importance of selecting appropriate optical dopants in lead-free ferroelectrics for applications in smart electronic devices.
Graphical Abstract