Feng, Q.I., Dizayee, W., Li, X. et al. (12 more authors) (2016) Enhanced magnetic properties in ZnCoAlO caused by exchangecoupling to Co nanoparticles. New Journal of Physics, 18 (11). 113040. ISSN 367-2630
Abstract
We report the results of a sequence of magnetisation and magneto-optical studies on laser ablated thin films of ZnCoAlO and ZnCoO that contain a small amount of metallic cobalt. The results are compared to those expected when all the magnetization is due to isolated metallic clusters of cobalt and with an oxide sample that is almost free from metallic inclusions. Using a variety of direct magnetic measurements and also magnetic circular dichroism we find that there is ferromagnetism within both the oxide and the metallic inclusions, and furthermore that these magnetic components are exchange-coupled when aluminium is included. This enhances both the coercive field and the remanence. Hence the presence of a controlled quantity of metallic nanoparticles in ZnAlO can improve the magnetic response of the oxide, thus giving great advantages for applications in spintronics.
Metadata
Item Type: | Article |
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Authors/Creators: | This paper has 15 authors. You can scroll the list below to see them all or them all.
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Copyright, Publisher and Additional Information: | Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number LEVERHULME TRUST (THE) EM-2012-089/4 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 18 Nov 2016 14:21 |
Last Modified: | 21 Dec 2016 14:46 |
Published Version: | https://doi.org/10.1088/1367-2630/18/11/113040 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1367-2630/18/11/113040 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107578 |