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

DOI: 10.1088/1361-6463/aabf77 DOI Help

Authors: Massimo Ghidini (University of Cambridge) , Bonan Zhu (University of Cambridge) , Rhodri Mansell (University of Cambridge) , Raffaele Pellicelli (University of Parma) , Arnaud Lesaine (University of Cambridge) , Xavier Moya (University of Cambridge) , Sam Crossley (Stanford University) , Bhasi Nair (University of Cambridge) , Francesco Maccherozzi (Diamond Light Source) , Crispin H. W. Barnes (University of Cambridge) , Russell P. Cowburn (University of Cambridge) , Sarnjeet Dhesi (Diamond Light Source) , Neil D. Mathur (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Physics D: Applied Physics , VOL 51 , PAGES 22

State: Published (Approved)
Published: May 2018
Diamond Proposal Number(s): 9590

Abstract: For 1 microm-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.

Subject Areas: Materials, Physics

Instruments: I06-Nanoscience