Kaminsky, W. M., Jones, G.A.C., Patel, N.K. et al. (5 more authors) (2001) Patterning ferromagnetism in Ni80Fe20 films via Ga+ ion irradiation. Applied Physics Letters, 78 (11). pp. 1589-1591. ISSN 0003-6951
Abstract
We demonstrate that focused Ga+ ion irradiation can comprehensively modify the ferromagnetic properties of Ni80Fe20 thin films. Magneto-optic Kerr effect measurements at room temperature and magnetoresistance measurements at temperatures between 1.5 and 270 K characterized the irradiation effects. Irradiation steadily reduced the films' room temperature coercivity, and a dose of 1.0×10(16) ions/cm(2) at 30 keV was found sufficient to cause a loss of ferromagnetism at room temperature in films of thickness up to 15.5 nm. In situ end-point detection and postirradiation atomic force microscopy confirmed that the sputtering which accompanied doses up to 1.0×10(16) ions/cm(2) did not compromise the protective caps on these Ni80Fe20 films. We therefore conclude that the modification of ferromagnetic properties occurred primarily because of direct Ga+ ion implantation. From these results, we speculate that focused Ga+ ion irradiation could be a convenient tool for the nanoscale patterning of magnetic properties in 3d transition metal thin films. © 2001 American Institute of Physics.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2001 American Institute of Physics. Available from the author's web site (Associated URL field). |
Keywords: | |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Electronic Engineering (York) |
Depositing User: | Repository Officer |
Date Deposited: | 08 Jan 2007 |
Last Modified: | 05 Aug 2007 18:25 |
Published Version: | http://dx.doi.org/10.1063/1.1351519 |
Status: | Published |
Publisher: | American Institute of Physics |
Refereed: | Yes |
Identification Number: | 10.1063/1.1351519 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:1887 |