Giant Magnetoelastic Effects in BaTiO3-based Extrinsic Multiferroic Hybrids

TL;DR

This paper investigates the magnetoelastic effects in BaTiO3-based extrinsic multiferroic hybrids, combining theoretical simulations and experiments to understand and predict their magnetic behavior for potential device applications.

Contribution

It provides a comprehensive study linking molecular dynamics simulations with experimental results to understand magnetoelastic effects in BaTiO3-based multiferroic hybrids, enabling better design of such materials.

Findings

Excellent agreement between simulations and experiments.

Magnetic behavior can be predicted by ab-initio calculations.

Potential for designing novel multiferroic hybrids.

Abstract

Extrinsic multiferroic hybrid structures consisting of ferromagnetic and ferroelectric layers elastically coupled to each other are promising due to their robust magnetoelectric effects even at room temperature. For a quantitative analysis of these magnetoelectric effects, a detailed knowledge of the piezoelectric and magnetoelastic behavior of both constituents as well as their mutual elastic coupling is mandatory. We here report on a theoretical and experimental study of the magnetic behavior of BaTiO3-based extrinsic multiferroic structures. An excellent agreement between molecular dynamics simulations and the experiments was found for Fe50Co50/BaTiO3 and Ni/BaTiO3 hybrid structures. This demonstrates that the magnetic behavior of extrinsic multiferroic hybrid structures can be determined by means of ab-initio calculations, allowing for the design of novel multiferroic hybrids.