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Voltage control of magnetic single domains in Ni discs on ferroelectric BaTiO3

Accepted version
Peer-reviewed

Type

Article

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Abstract

For 1 μm diameter Ni discs on a BaTiO3 substrate, the local magnetization direction is determined by ferroelectric domain orientation as a consequence of growth strain, such that single domain discs lie on single ferroelectric domains. On applying a voltage across the substrate, ferroelectric domain switching yields non volatile magnetization rotations of 90°, while piezoelectric effects that are small and continuous yield non volatile magnetization reversals that are non-deterministic. This demonstration of magnetization reversal without ferroelectric domain switching implies reduced fatigue, and therefore represents a step towards applications.

Description

Keywords

magnetoelectric, magnetic, ferroelectric

Journal Title

Journal of Physics D: Applied Physics

Conference Name

Journal ISSN

0022-3727
1361-6463

Volume Title

51

Publisher

IOP Publishing
Sponsorship
Leverhulme Trust (F/09 154/E)