Feng, Qi, Dizayee, Wala, Li, Xiaoli et al. (12 more authors) (2016) Enhanced magnetic properties in ZnCoAlO caused by exchange-coupling to Co nanoparticles. New Journal of Physics. 113040. ISSN 1367-2630
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 |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2016 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft |
Keywords: | cobalt nanoparticles,coercive field,magnetization,MCD,XAS,ZnO |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 30 Jan 2017 11:46 |
Last Modified: | 19 Mar 2025 00:07 |
Published Version: | https://doi.org/10.1088/1367-2630/18/11/113040 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1088/1367-2630/18/11/113040 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:111388 |
Downloads
Filename: EnhancedMagneticProperties_Feng_2016_New_J._Phys._18_113040.pdf
Description: EnhancedMagneticProperties_Feng_2016_New_J._Phys._18_113040
Licence: CC-BY 2.5