Polycrystalline bilayer thin film of multiferroic [Ba(Zr_0.2Ti_0.8)O₃‐0.5(Ba_0.7Ca_0.3)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 (α_E) 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.

中文翻译：

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脉冲激光沉积[Ba（Zr0.2Ti0.8）O3-0.5（Ba0.7Ca0.3）TiO3] / CoFe2O4双层薄膜中的强磁电效应

多金属[Ba（Zr _0.2 Ti _0.8）O ₃ ‐0.5（Ba _0.7 Ca _0.3）TiO ₃ ] / CoFe ₂ O ₄（[BZT-0.5BCT] / CFO）的多晶双层薄膜已沉积在Pt / Si（ 100）使用脉冲激光沉积技术的衬底。介电分析表明，在施加磁场的情况下，室温下的介电常数会发生显着变化（在典型的100 Hz频率下约为39％），此外还会显着提高饱和极化强度。低漏电流密度（〜5×10 ^-7 A /厘米²）和高磁电耦合系数（α _Ë）的横向（〜2.085 V / Oe cm）和纵向（〜0.708 V / cm Oe）方向，表明该系统在薄膜形式的多功能设备应用中的原理可用性。