Strong magnetoelectric effect in pulse laser deposited [Ba(Zr0.2Ti0.8)O3‐0.5(Ba0.7Ca0.3)TiO3]/CoFe2O4 bilayer thin film |
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| Authors: | Jyoti Rani Varun K. Kushwaha Jayant Kolte Chakkalakal V. Tomy |
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| Affiliation: | 1. Department of Physics, Vardhaman College, Bijnor, India;2. Department of Physics, Indian Institute of Technology Bombay, Mumbai, India;3. School of Physics and Materials Science, Thapar University, Patiala, India |
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| Abstract: | Polycrystalline bilayer thin film of multiferroic [Ba(Zr0.2Ti0.8)O3‐0.5(Ba0.7Ca0.3)TiO3]/CoFe2O4([BZT‐0.5BCT]/CFO) has been deposited on Pt/Si (100) substrate using a pulsed laser deposition technique. The dielectric analysis reveals a significant change in the dielectric constant (~39% at a typical frequency of 100 Hz) at room temperature when a magnetic field is applied, in addition to a substantial improvement in the saturation polarization. A low leakage current density (~ 5 × 10?7 A/cm2) and a high magnetoelectric coupling coefficient (αE) both in the transverse (~2.085 V/Oe cm) as well as in the longitudinal (~0.708 V/cm Oe) directions, indicate in‐principle usability of this system for multifunctional device applications in thin film form. |
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| Keywords: | dielectric constant magnetoelectric thin films transmission electron microscopy |
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