Miskevich, E., Alshammari, F.K., Yang, W.G. et al. (5 more authors) (2018) Artificial multiferroic structures using soft magnetostrictive bilayers on Pb(Mg1/3Nb2/3)-PbTiO3. Journal of Physics D: Applied Physics, 51. 085001. ISSN 0022-3727
Abstract
Artificial multiferroic structures are of great interest as they combine two or more functionalities together. One example of these structures are magnetostrictive films grown on top of piezoelectric substrates; allowing the magnetisation hysteresis loop of the magnetostrictive film to be manipulated using an electric field across the structure rather than a magnetic field. In this paper, we have studied the multiferroic structure NiFe/FeCo/Ti/Pb(Mg1/3Nb2/3)-PbTiO3 (PMN-PT) as a function of the electric and magnetic field. Soft magnetostrictive bilayer films (NiFe/FeCo) are studied, as often applications require soft magnetic properties (small coercive and anisotropy fields) combined with larger magnetostrictive constants. Unfortunately, FeCo films can have coercive fields that are too large, while NiFe films’ magnetostriction constants are almost zero; thus, combining the two together should produce the “ideal” soft magnetostrictive film. It was found that the addition of a thin NiFe film onto the FeCo film reduced the coercive field and remnant magnetisation on the application of an applied voltage in comparison to just the FeCo film. It was also determined that for the NiFe/FeCo bilayer the magnetisation switchability was ~100% on the application of 8kV/cm, which was higher than the monolayer FeCo films at the same applied field, demonstrating improvement of the multiferroic behaviour by the soft magnetic/magnetostrictive bilayer.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 IOP Publishing. This is an author produced version of a paper subsequently published in Journal of Physics D: Applied Physics. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Jan 2018 11:38 |
Last Modified: | 01 Feb 2019 01:48 |
Published Version: | https://doi.org/10.1088/1361-6463/aaa7d7 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1361-6463/aaa7d7 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:126286 |