Temperature dependence of electric field tunable ferromagnetic resonance lineshape in multiferroic heterostructure

Fenglong Wang,Changjun Jiang,Chao Zhang,Chenglong Jia,Desheng Xue,Chengcheng Yang,Cai Zhou

doi:10.1063/1.4967780

Abstract

Herein, we experimentally investigate the effect of temperature on the electric field tunable ferromagnetic resonance (FMR) in a ferroelectric/ferromagnetic heterostructure, and demonstrate the tuning of abnormal change in FMR using the polarization of the ferroelectric layer above 200 K. The FMR was found to be almost unchanged under different electric field strength at 100 K owing to frozen polarization, which causes extremely weak magnetoelectric coupling. More interestingly, negative effective linewidth was observed when an electric field greater than 10 kV/cm was applied above 220 K. The simultaneous electrical control of magnetization and its damping via FMR based on linear magnetoelectric coupling are directly relevant to use of composite multiferroics for a wide range of devices.

Highlights

The electrical control of magnetic properties[1,2,3] has attracted more and more attention in recent decades owing to its potential industrial applications in new devices such as multidimensional memory devices and ultrasensitive magnetic field sensors
The coupling between the magnetic and ferroelectric order parameters of such materials can lead to magnetoelectric (ME) effects,[1,8,9,10] in which the magnetization can be tuned with an applied electric field and vice versa
Some research indicates that developing composite multiferroics by artificially creating ferromagnets (FM) and ferroelectrics (FE) in nanoscale heterostructures is an effective technique for obtaining a large ME effect.[12]

Summary

Introduction

The electrical control of magnetic properties[1,2,3] has attracted more and more attention in recent decades owing to its potential industrial applications in new devices such as multidimensional memory devices and ultrasensitive magnetic field sensors. Temperature dependence of electric field tunable ferromagnetic resonance lineshape in multiferroic heterostructure

Results

Conclusion