Jenkins, Sarah, Chantrell, Roy W. orcid.org/0000-0001-5410-5615 and Evans, Richard F.L. orcid.org/0000-0002-2378-8203 (2020) Spin wave excitations in exchange biased IrMn/CoFe bilayers. Journal of Applied Physics. 033903. ISSN 1089-7550
Abstract
Using an atomistic spin model, we have simulated spin wave injection and propagation into antiferromagnetic IrMn from an exchange coupled CoFe layer. The spectral characteristics of the exited spin waves have a complex beating behavior arising from the non-collinear nature of the antiferromagnetic order. We find that the frequency response of the system depends strongly on the strength and frequency of oscillating field excitations. We also find that the strength of excited spin waves strongly decays away from the interfacial layer with a frequency dependent attenuation. Our findings suggest that spin waves generated by coupled ferromagnets are too weak to reverse IrMn in their entirety even with resonant excitation of a coupled ferromagnet. However, efficient spin wave injection into the antiferromagnet is possible due to the non-collinear nature of the IrMn spin ordering.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
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: |
|
Institution: | The University of York |
Academic Units: | The University of York > York Institute for Materials Research The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 24 Aug 2020 09:30 |
Last Modified: | 25 Nov 2024 00:35 |
Published Version: | https://doi.org/10.1063/5.0006232 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1063/5.0006232 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164745 |
Download
Filename: JAP20_AR_AFSPN2020_01246.pdf
Description: JAP20-AR-AFSPN2020-01246