Magnetic properties of Ni/BiFeO3 hybrid nanostructures

Abstract

Next-generation spintronic applications, including magnetic nanosensors, energy-efficient data storage devices and magnetic memory devices, have obtained scientific and technological interest. One-dimensional (1D) core/shell nanomaterials are particularly interesting due to their promising anisotropic magnetic properties and exchange bias. Here, we investigate a versatile sol-gel and electrochemical deposition method and achieve Ni/BiFeO3 (Ni/BFO)'s controlled growth with tunable structure geometry. Significantly, BFO nanoshells on the pore walls and Ni nanowires inside the nanoshell are successfully deposited. Experimental and analytical observations show that the prepared Ni/BFO nanostructures have the ability to improve magnetic properties. This work presents a pathway for the controlled growth of hybrid nanostructures and provides a platform to study the tunable magnetic properties, suggesting their promise for practical applications.