CUED Publications database

Artificial magnetic domain structures realized by focussed ion beam irradiation

Bending, S and Crampin, S and Aziz, A (2010) Artificial magnetic domain structures realized by focussed ion beam irradiation. In: Nanomagnetism and Spintronics: Fabrication, Materials, Characterization and Applications. UNSPECIFIED, pp. 19-44.

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We describe how artificial ferromagnetic domain patterns can be realized by focussed ion beam irradiation of Pt/Co/Pt trilayers with perpendicular magnetic anisotropy. This approach allows exquisite control of the coercive fields of ‘patterned’ regions with very high spatial resolution. Systematic extraordinary Hall effect studies of magnetic switching in artificial magnetic domains as a function of irradiation dose and size are described and interpreted. The potential of such structures is then illustrated in an investigation of the angledependent intrinsic domain wall resistivity in artificial superlattice structures. We find excellent agreement between these experimental results and a theory of domain wall resistivity based on spin-dependent potentials and scattering rates for majority and minority spin electrons due to Levy and Zhang.

Item Type: Book Section
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 04 Oct 2018 02:44
Last Modified: 10 Apr 2021 22:33
DOI: 10.1142/9789814273060_0002