Electrical switching of the magnetic vortex circulation in artificial multiferroic structure of Co/Cu/PMN-PT(011)

Li, Q.; Tan, A.; Scholl, A.; Young, A. T.; Yang, M.; Hwang, C.; N'Diaye, A. T.; Arenholz, E.; Li, J.; Qiu, Z. Q.

doi:10.1063/1.4990987

Title: Electrical switching of the magnetic vortex circulation in artificial multiferroic structure of Co/Cu/PMN-PT(011)

Journal Article · 30 June 2017 · Applied Physics Letters

DOI: https://doi.org/10.1063/1.4990987 · OSTI ID:1530291

Li, Q. ^[1]; Tan, A. ^[1]; Scholl, A. ^[2]; Young, A. T. ^[2]; Yang, M. ^[1]; Hwang, C. ^[3];

^[2]; Arenholz, E. ^[2]; Li, J. ^[4]; Qiu, Z. Q. ^[1]

Univ. of California, Berkeley, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Korea Research Institute of Standards and Science, Yuseong (Korea)
Peking Univ., Beijing (China)

For this research, Co films and micron sized disks were grown on top of piezoelectric PMN-PT(011) and Cu/PMN-PT(001) substrates and investigated by the Magneto-Optic Kerr Effect and Photoemission Electron Microscopy. By applying an electric field in the surface normal direction, we find that the strain of the ferroelectric PMN-PT(011) substrate induces an in-plane uniaxial magnetic anisotropy in the Co overlayer. Under specific conditions, the Co magnetic vortex could be switched between clockwise and counter-clockwise circulations. The variations of the Co vortex switching were attributed to the variations of the ferroelectric domains under the Co disks. Lastly, we speculate that the switching of the magnetic vortex circulation is a dynamical process which may involve pulses of appropriate magnitude and duration of the uniaxial magnetic anisotropy delivered to the magnetic vortex.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1530291

Alternate ID(s):: OSTI ID: 1368602

Journal Information:: Applied Physics Letters, Vol. 110, Issue 26; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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