Skip to main content

Research Repository

Advanced Search

Tuning spin wave modes in yttrium iron garnet films with stray fields

Chaudhuri, Ushnish; Singh, Navab; Mahendiran, R.; Adeyeye, Adekunle O.

Tuning spin wave modes in yttrium iron garnet films with stray fields Thumbnail


Authors

Ushnish Chaudhuri

Navab Singh

R. Mahendiran



Abstract

The nanopatterning of Yttrium Iron Garnets (YIGs) has proven to be a non-trivial problem even with advances in modern lithography techniques due to non-compatibility with a conventional complementary metal oxide semiconductor platform. In an attempt to circumvent this problem, we demonstrate a simple and reliable method to indirectly pattern YIG films on a Gadolinium Gallium Garnet (GGG) substrate. We fabricated exchange-coupled arrays of Py dots onto the underlying YIG films using nanostencil lithography. The stray fields generated from the Py dots were used to transfer patterned magnetic information to the underlying YIG films. The static and dynamic properties of the fabricated hybrid YIG/Py dot structure and reference YIG film were characterized using the focused magneto-optic Kerr effect and by broadband ferromagnetic resonance spectroscopy. For the reference YIG film, as expected, a single field-dependent resonance mode with a narrow linewidth was observed in contrast to the splitting into three distinct resonance modes for the YIG/Py dot structure as predicted by micromagnetic simulations. We have thus shown that it is possible to utilize stray field effects from easily patternable magnetic materials for the development of future YIG-based magnonic devices.

Citation

Chaudhuri, U., Singh, N., Mahendiran, R., & Adeyeye, A. O. (2022). Tuning spin wave modes in yttrium iron garnet films with stray fields. Nanoscale, 14(33), 12022 - 12029. https://doi.org/10.1039/d2nr00618a

Journal Article Type Article
Acceptance Date Jul 22, 2022
Online Publication Date Jul 22, 2022
Publication Date 2022
Deposit Date Sep 15, 2022
Publicly Available Date Sep 15, 2022
Journal Nanoscale
Print ISSN 2040-3364
Electronic ISSN 2040-3372
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 14
Issue 33
Pages 12022 - 12029
DOI https://doi.org/10.1039/d2nr00618a
Public URL https://durham-repository.worktribe.com/output/1191191

Files






You might also like



Downloadable Citations