Magnetic microscopy and simulation of strain-mediated control of magnetization in PMN-PT/Ni nanostructures

Strain-mediated thin film multiferroics comprising piezoelectric/ferromagnetic heterostructures enable the electrical manipulation of magnetization with much greater efficiency than other methods; however, the investigation of nanostructures fabricated from these materials is limited. Here we charac...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2016-10, Vol.109 (16)
Main Authors: Gilbert, Ian, Chavez, Andres C., Pierce, Daniel T., Unguris, John, Sun, Wei-Yang, Liang, Cheng-Yen, Carman, Gregory P.
Format: Article
Language:English
Subjects:
Applied physics
Elastodynamics
Ferroelectric materials
Ferroelectricity
Ferromagnetism
Lead titanates
Magnetization
Nanostructure
Piezoelectricity
Scanning electron microscopy
Simulation
Substrates
Thin films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Strain-mediated thin film multiferroics comprising piezoelectric/ferromagnetic heterostructures enable the electrical manipulation of magnetization with much greater efficiency than other methods; however, the investigation of nanostructures fabricated from these materials is limited. Here we characterize ferromagnetic Ni nanostructures grown on a ferroelectric [Pb(Mg1/3Nb2/3)O3]0.68[PbTiO3]0.32 substrate using scanning electron microscopy with polarization analysis (SEMPA) and micromagnetic simulations. The magnetization of the Ni nanostructures can be controlled with a combination of sample geometry and applied electric field, which strains the ferroelectric substrate and changes the magnetization via magnetoelastic coupling. We evaluate two types of simulations of ferromagnetic nanostructures on strained ferroelectric substrates: conventional micromagnetic simulations including a simple uniaxial strain, and coupled micromagnetic-elastodynamic simulations. Both simulations qualitatively capture the response of the magnetization changes produced by the applied strain, with the coupled solution providing more accurate representation.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4965028