Multiferroic and magnetoelectric properties of Ba_(0.85)Ca_(0.15)Zr_(0.1)Ti_(0.9)O_3-CoFe_2O_4 core-shell nanocomposite

摘要

Lead-free magnetoelectric (ME) composites with remarkable ME coupling are required for the realization of eco-friendly multifunctional devices. This work demonstrates the ME properties of Ba_(0.85)Ca_(0.15)Zr_(0.1)Ti_(0.9)O_3-CoFe_2O_4 (BCZT-CFO) core-shell composites synthesized via co-sol-gel technique. Room temperature ferroelectric and ferromagnetic characterization have shown that the samples are magnetic and ferroelectric along with an adequate magnetoelectric coupling of 12.15 mV/(cm Oe). The strong dependence of electric parameters on applied magnetic DC bias fields demonstrated in ferroelectric and magnetoelectric measurements provide a framework for the development of potential magnetoeiectric devices. Also, the high sensitivity of magnetoelectric coupling towards the applied AC magnetic field can be used for its application in magnetoelectric sensors.