Frost, William James orcid.org/0000-0001-5249-1006, Samiepour, Marjan and Hirohata, Atsufumi orcid.org/0000-0001-9107-2330 (2021) Perpendicular Anisotropy Controlled by Seed and Capping Layers of Heusler-Alloy Films. IEEE Transactions on Electron Devices. pp. 1629-1633. ISSN 0018-9383
Abstract
Half-metallic Heusler alloys typically have in-plane magnetic anisotropy, which can be converted to perpendicular by attaching MgO or heavy metal, e.g., Pt, layers as similarly applied for conventional ferromagnets. Recently we have found body-centered cubic (bcc) seed layers, e.g., V and W, to induce perpendicular anisotropy in Heusler-alloy films above, however, they show small giant magnetoresistance (GMR) ratios in spin-valve structures to date. This is partially because of the large resistivity of the seed layer and the nonmagnetic layer in the spin-valve. In this study, we have systematically investigated nonmagnetic overlayers and have found that a Ag layer best maintains the perpendicular anisotropy. The corresponding GMR devices have then been fabricated and characterized, achieving the GMR ratio of 0.03% at room temperature. Such bcc seed layers can offer an alternative method for perpendicularlymagnetizedGMRjunctions for applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York) |
Depositing User: | Pure (York) |
Date Deposited: | 18 Aug 2021 16:10 |
Last Modified: | 11 Mar 2025 00:08 |
Published Version: | https://doi.org/10.1109/TED.2021.3105490 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1109/TED.2021.3105490 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:177237 |
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