Multiferroic Properties of Electrospun CFO-BCTSn Nanocomposites for Magnetoelectric and Magnetic Field Sensing Applications

TL;DR

This study reports the synthesis and characterization of multiferroic CFO-BCTSn nanofibers with potential applications in nanoscale magnetoelectric devices and magnetic field sensors.

Contribution

The paper introduces a sol-gel electrospinning method to create lead-free multiferroic nanofibers with confirmed multiferroic properties and magnetoelectric coupling.

Findings

Well-defined nanofibers with 120-150 nm diameter

Coexistence of CFO and BCTSn phases confirmed structurally

Magnetoelectric coupling demonstrated by hysteresis loop differences

Abstract

Multiferroic CFO-BCTSn composite nanofibers were synthesized using a sol-gel electrospinning method. Electron microscopy revealed well-defined fibers with diameters of 120-150 nm. Structural analyses using X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy confirmed the coexistence of the spinel CFO phase and the perovskite BCTSn phase without detectable secondary phases. Magnetic hysteresis measurements demonstrated the magnetic behavior of the nanofibers, while piezoresponse force microscopy confirmed their piezoelectric properties. Magnetoelectric coupling was evidenced by differences between the magnetic hysteresis loops of electrically poled and unpoled samples. These lead-free composite nanofibers show potential for nanoscale magnetoelectric devices and magnetic field sensing applications.