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Title: Magnetic state switching in FeGa microstructures

Journal Article · · Smart Materials and Structures
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [3];  [1];  [1];  [1]; ORCiD logo [1];  [4];  [1]; ORCiD logo [5];  [6]
  1. Univ. of California, Los Angeles, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Univ. of the Basque Country, Donostia (Spain)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  4. Univ. of California, Berkeley, CA (United States)
  5. Univ. of California, Los Angeles, CA (United States); California Nanotechnology Systems Institute (CNSI), Los Angeles, CA (United States)
  6. Univ. of California, Los Angeles, CA (United States); Univ. of California, Riverside, CA (United States)

This work demonstrates that magnetoelectric composite heterostructures can be designed at the length scale of 10µms that can be switched from a magnetized state to a vortex state, effectively switching the magnetization off, using electric field induced strain. This was accomplished using thin film magnetoelectric heterostructures of Fe81.4Ga18.6on a single crystal (011) [Pb(Mg1/3Nb2/3)O3]0.68-[PbTiO3]0.32(PMN-32PT) ferroelectric substrate. Here, the heterostructures were tripped from a multi-domain magnetized state to a flux closure vortex state using voltage induced strain in a piezoelectric substrate. FeGa heterostructures were deposited on a Si-substrate for superconducting quantum interference device magnetometry characterization of the magnetic properties. The magnetoelectric coupling of a FeGa continuous film on PMN-32PT was characterized using a magneto optical Kerr effect magnetometer with bi-axial strain gauges, and magnetic multi-domain heterostructures were imaged using x-ray magnetic circular dichroism—photoemission electron microscopy during the transition to the vortex state. The domain structures were modelled using MuMax3, a micromagnetics code, and compared with observations. The results provide considerable insight into designing magnetoelectric heterostructures that can be switched from an ‘on’ state to an ‘off’ state using electric field induced strain.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231; EEC-1160504; MRI-1625776
OSTI ID:
1960395
Journal Information:
Smart Materials and Structures, Vol. 31, Issue 3; ISSN 0964-1726
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (30)

Cytocompatible magnetostrictive microstructures for nano- and microparticle manipulation on linear strain response piezoelectrics journal November 2018
Acoustic-Wave-Induced Ferromagnetic-Resonance-Assisted Spin-Torque Switching of Perpendicular Magnetic Tunnel Junctions with Anisotropy Variation journal July 2020
Electrically Driven Magnetic Domain Wall Rotation in Multiferroic Heterostructures to Manipulate Suspended On-Chip Magnetic Particles journal May 2015
Acoustofluidics 17: Theory and applications of surface acoustic wave devices for particle manipulation journal January 2012
Composition dependence of field induced phase transformations in [0 1 1]C PIN–PMN–PT relaxor ferroelectric single crystals with d322 piezoelectric mode journal December 2014
Magnetic anisotropy of FeGa alloys journal June 2004
The design and verification of MuMax3 journal October 2014
Localized strain profile in surface electrode array for programmable composite multiferroic devices journal May 2021
Reversible strain-induced magnetization switching in FeGa nanomagnets: Pathway to a rewritable, non-volatile, non-toggle, extremely low energy straintronic memory journal December 2015
Generation of localized strain in a thin film piezoelectric to control individual magnetoelectric heterostructures journal August 2015
Multiferroic Memories journal January 2012
A method to control magnetism in individual strain-mediated magnetoelectric islands journal December 2013
Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals journal August 1997
Influence of Nonuniform Micron-Scale Strain Distributions on the Electrical Reorientation of Magnetic Microstructures in a Composite Multiferroic Heterostructure journal February 2018
Effect of the Magnetostrictive Layer on Magnetoelectric Properties in Lead Zirconate Titanate/Terfenol-D Laminate Composites journal December 2001
Microfluidic cell sorting: a review of the advances in the separation of cells from debulking to rare cell isolation journal January 2015
Underlayer effect on the soft magnetic, high frequency, and magnetostrictive properties of FeGa thin films journal July 2020
Modeling of magnetoelastic nanostructures with a fully coupled mechanical-micromagnetic model journal October 2014
Bulk Acoustic Wave-Mediated Multiferroic Antennas: Architecture and Performance Bound journal August 2015
Phase-field simulation of domain walls in rhombohedral ferroelectric single crystals journal August 2018
Magnetoelasticity of Fe–Ga and Fe–Al alloys journal May 2001
Electric field control of magnetic states in isolated and dipole-coupled FeGa nanomagnets delineated on a PMN-PT substrate journal September 2015
Static and Dynamic Magnetic Properties of Sputtered Fe–Ga Thin Films journal November 2017
Single‐Domain Multiferroic Array‐Addressable Terfenol‐D (SMArT) Micromagnets for Programmable Single‐Cell Capture and Release journal April 2021
Extraordinary magnetoelasticity and lattice softening in bcc Fe-Ga alloys journal May 2003
In situ immune response and mechanisms of cell damage in central nervous system of fatal cases microcephaly by Zika virus journal January 2018
A phenomenological thermodynamic energy function for PIN-PMN-PT relaxor ferroelectric single crystals journal September 2017
Acoustic-Wave-Induced Magnetization Switching of Magnetostrictive Nanomagnets from Single-Domain to Nonvolatile Vortex States journal August 2016
Multiferroic and magnetoelectric materials journal August 2006
Tunable Magnetoelastic Effects in Voltage-Controlled Exchange-Coupled Composite Multiferroic Microstructures journal January 2020