Published November 1, 2019 | Version v1
Journal article Metadata-only

Electric-field controlled magnetic reorientation in exchange coupled CoFeB/Ni bilayer microstructures

Creators

  • 1. Department of Electrical and Computer Engineering, University of California, Los Angeles, California 90095 (United States)
  • 2. Department of Electrical Engineering and Computer Science, University of California, Berkeley, California 94720 (United States)
  • 3. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley 94720 (United States)
  • 4. Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California, 90095 (United States)

Description

A novel strain-mediated composite multiferroic system is investigated in this work. The system is composed of magnetostrictive microstructures made of a ferromagnetic bilayer of negative magnetostrictive Ni and positive magnetostrictive CoFeB fabricated on a ferroelectric Pb(Mg1/3Nb2/3)0.69Ti0.31O3 (PMN-PT) single crystal substrate. When an electric field is applied across the PMN-PT substrate, magnetization reorientation occurs in the microstructures that are predominantly initialized into flux-closure states. An x-ray magnetic circular dichroism-photoemission electron microscope is used to experimentally visualize the electrically induced changes of the magnetization state of the individual layers as well as the exchange coupling between the two layers. Such heterostructures with tunable magnetoelectric properties have potential for new magnetic memory and sensor applications. (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/1407/1/012024

Additional details

Identifiers

DOI
10.1088/1742-6596/1407/1/012024;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
1407
Journal Issue
1
Journal Page Range
[5 p.]
ISSN
1742-6596

Conference

Title
18. International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications
Dates
4-7 Dec 2018
Place
Daytona Beach, FL (United States)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
53067642
Subject category
S36: MATERIALS SCIENCE; S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ELECTRIC FIELDS; ELECTRICAL PROPERTIES; ELECTRON MICROSCOPES; FERROELECTRIC MATERIALS; LAYERS; MAGNETIC CIRCULAR DICHROISM; MAGNETIZATION; MAGNETOSTRICTION; MICROSTRUCTURE; MONOCRYSTALS; PHOTOEMISSION; SENSORS; SUBSTRATES; X RADIATION
Descriptors DEC
CRYSTALS; DICHROISM; DIELECTRIC MATERIALS; ELECTROMAGNETIC RADIATION; EMISSION; IONIZING RADIATIONS; MAGNETIC PROPERTIES; MATERIALS; MICROSCOPES; PHYSICAL PROPERTIES; RADIATIONS; SECONDARY EMISSION