Barker, OJ 
ORCID: 0009-0009-3969-1041, Mohammadi-Motlagh, A ORCID: 0009-0005-9664-4998, Wright, AJ ORCID: 0000-0002-9267-5552, Batty, R ORCID: 0009-0001-7708-0518, Finch, H ORCID: 0000-0001-8470-1354, Vezzoli, A ORCID: 0000-0002-8059-0113, Keatley, PS ORCID: 0000-0002-7679-6418 and O'Brien, L ORCID: 0000-0002-0136-8603
(2024)
Thermal nanoconversion of ferromagnetic nanoislands.
Applied Physics Letters, 124 (11).
112411-.
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APL23-AR-MAGN2023-11824.pdf - Author Accepted Manuscript Available under License Creative Commons Attribution. Download (644kB) | Preview |
Abstract
<jats:p>In this work, we investigate the use of post-fabrication thermal nanoconversion (TNC), using a heated scanning probe tip, to modify the magnetic properties of Ni80Fe20 elliptical nanoislands with varying aspect ratio. Despite Ni80Fe20 being unoptimized for TNC, by comparing quasistatic and dynamic magneto-optical Kerr effect microscopy measurements, we demonstrate that TNC at a contact temperature of 250 °C increases the saturation magnetization of the treated nanoislands, reaching a value close to 800 kA/m. Micromagnetic simulations of the nanoislands indicate that the TNC technique can be used to alter the remanent state, from a single domain to a vortex. These results demonstrate the opportunities afforded by TNC to modify the properties of selected areas in a thin film or a patterned sample, particularly when designing magnonic crystals and other nanomagnetic devices.</jats:p>
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 15 Mar 2024 08:11 |
| Last Modified: | 02 Apr 2024 09:26 |
| DOI: | 10.1063/5.0189759 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3179397 |
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