For 1 μm-diameter Ni discs on a BaTiO3substrate, 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.

Voltage control of magnetic single domains in Ni discs on ferroelectric BaTiO3 / Ghidini, M; Zhu, B; Mansell, R; Pellicelli, R; Lesaine, A; Moya, X; Crossley, S; Nair, B; Maccherozzi, F; W Barnes, C H; P Cowburn, R; D Mathur, S S Dhesi and N. - In: JOURNAL OF PHYSICS D. APPLIED PHYSICS. - ISSN 0022-3727. - 51:22(2018), p. 224007. [10.1088/1361-6463/aabf77]

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

M Ghidini
;
2018

Abstract

For 1 μm-diameter Ni discs on a BaTiO3substrate, 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.
Voltage control of magnetic single domains in Ni discs on ferroelectric BaTiO3 / Ghidini, M; Zhu, B; Mansell, R; Pellicelli, R; Lesaine, A; Moya, X; Crossley, S; Nair, B; Maccherozzi, F; W Barnes, C H; P Cowburn, R; D Mathur, S S Dhesi and N. - In: JOURNAL OF PHYSICS D. APPLIED PHYSICS. - ISSN 0022-3727. - 51:22(2018), p. 224007. [10.1088/1361-6463/aabf77]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2851248
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