Influence of Nonuniform Micron-Scale Strain Distributions on the Electrical Reorientation of Magnetic Microstructures in a Composite Multiferroic Heterostructure

Nano Letters
Roberto Lo ConteJeffrey Bokor

Abstract

Composite multiferroic systems, consisting of a piezoelectric substrate coupled with a ferromagnetic thin film, are of great interest from a technological point of view because they offer a path toward the development of ultralow power magnetoelectric devices. The key aspect of those systems is the possibility to control magnetization via an electric field, relying on the magneto-elastic coupling at the interface between the piezoelectric and the ferromagnetic components. Accordingly, a direct measurement of both the electrically induced magnetic behavior and of the piezo-strain driving such behavior is crucial for better understanding and further developing these materials systems. In this work, we measure and characterize the micron-scale strain and magnetic response, as a function of an applied electric field, in a composite multiferroic system composed of 1 and 2 μm squares of Ni fabricated on a prepoled [Pb(Mg1/3Nb2/3)O3]0.69-[PbTiO3]0.31(PMN-PT) single crystal substrate by X-ray microdiffraction and X-ray photoemission electron microscopy, respectively. These two complementary measurements of the same area on the sample indicate the presence of a nonuniform strain which strongly influences the reorientation of the magneti...Continue Reading

References

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Citations

Apr 13, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Nasir MehmoodJun-Ming Liu
May 22, 2019·Nature Materials·M GhidiniN D Mathur
Oct 6, 2018·Nature Communications·Huilong HouIchiro Takeuchi
Dec 20, 2019·Science Advances·Aitian ChenXi-Xiang Zhang
Jan 28, 2021·ACS Applied Materials & Interfaces·Adrián Begué, Miguel Ciria

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