Magnetic and microwave properties of (Ni,Co)Fe2O4-ferroelectric and (La,Ca,Sr)MnO3-ferroelectric multilayer structures

TL;DR

This study investigates layered ferromagnetic-ferroelectric oxides, revealing strong magnetoelectric coupling in ferrite-based structures but poor coupling in manganite-based ones due to interface diffusion issues.

Contribution

It provides comparative analysis of magnetic and microwave properties of Ni,Co)Fe2O4 and (La,Ca,Sr)MnO3 ferroelectric multilayers, highlighting interface effects on magnetoelectric coupling.

Findings

Ferrite-based multilayers show defect-free structures and strong coupling.

Manganite-based multilayers exhibit deterioration due to interface diffusion.

Poor magnetoelectric coupling observed in manganite-PZT samples.

Abstract

Structural, magnetic and ferromagnetic resonance characterization studies have been performed on lay-ered ferromagnetic-ferroelectric oxides that show strong magnetoelectric coupling. The samples contained thick films of ferrites or substituted lanthanum manganites for the ferromagnetic phase and lead zirconate titanate for the ferroelectric phase, and were sintered high temperatures. Results indicate defect free ferrites, but deterioration of manganite parameters due to diffusion at the interface and accounts for poor magnetoelectric coupling in manganite-PZT samples.