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Voltage control of the magnetic coercive field: multiferroic coupling or artefact?

Vopsaroiu, M; Cain, M G; Woolliams, P D; Weaver, P M; Stewart, M; Wright, C D*; Tran, Y* (2011) Voltage control of the magnetic coercive field: multiferroic coupling or artefact? J. Appl. Phys., 109 (6). 066101

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Abstract

The ability to dynamically tune the coercive field of magnetic thin films is a powerful tool for applications, including magnetic recording disk technologies. Recently a number of papers have reported the electrical voltage control of the coercive field of various magnetic thin films in multiferroic composites. Theoretically this is possible in magneto-electric (ME) multiferroics due to the piezo - ferroelectric component that can be electrically activated to dynamically modify the properties of the magnetic component of the composite via a direct or strain mediated ME coupling. In this paper we fabricated and examined such structures and we determined that the magnetic coercive field reduction is most likely due to a heating effect. We concluded that this effect is probably an artefact that cannot be attributed to a multiferroic coupling.

Item Type: Article
Subjects: Advanced Materials
Advanced Materials > Functional Materials
Identification number/DOI: 10.1063/1.3558982
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/4929

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