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Artificial domain structures realized by local gallium focused ion-beam modification of Pt/Co/Pt trilayer transport structure - art. no. 123102

Aziz, A and Bending, SJ and Roberts, H and Crampin, S and Heard, PJ and Marrows, CH (2005) Artificial domain structures realized by local gallium focused ion-beam modification of Pt/Co/Pt trilayer transport structure - art. no. 123102. Journal of Applied Physics, 98 (12). ISSN 0021-8979

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Abstract

We demonstrate that a high-resolution Ga focused ion beam can be used to introduce artificial domain structures in Pt(1.6 nm)/Co(0.5 nm)/Pt(3.5 nm) trilayer transport structures. We have used thin SiO(2) overlayers to control the effective energy and dose of Ga ions at the Pt/Co interface. The extraordinary Hall effect (EHE) was used to characterize the magnetic properties of the patterned films. Using 30 keV Ga ions and SiO(2) overlayer thicknesses in the range of 0-24 nm, we achieve complete control of the coercive field of our Pt/Co/Pt trilayer structures. The magnetization reversal mechanism for an artificial domain of size of 3x0.5 mu m(2) is investigated using EHE. (c) 2005 American Institute of Physics.

Item Type: Article
Journal or Publication Title: Journal of Applied Physics
Uncontrolled Keywords: MAGNETIC-PROPERTIES ; MEDIA ; IRRADIATION ; CO/PT MULTILAYERS ; LAYERS ; ANISOTROPY
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63543
Deposited By: ep_importer_pure
Deposited On: 19 Apr 2013 11:37
Refereed?: Yes
Published?: Published
Last Modified: 21 Sep 2017 05:32
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/63543

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