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

Abstract

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.

Authors:
 [1];  [1];  [2];  [2];  [1];  [3]; ORCiD logo [2];  [2];  [4];  [1]
  1. Univ. of California, Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Korea Research Institute of Standards and Science, Yuseong (Korea)
  4. Peking Univ., Beijing (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1530291
Alternate Identifier(s):
OSTI ID: 1368602
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 26; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Li, Q., Tan, A., Scholl, A., Young, A. T., Yang, M., Hwang, C., N'Diaye, A. T., Arenholz, E., Li, J., and Qiu, Z. Q. Electrical switching of the magnetic vortex circulation in artificial multiferroic structure of Co/Cu/PMN-PT(011). United States: N. p., 2017. Web. doi:10.1063/1.4990987.
Li, Q., Tan, A., Scholl, A., Young, A. T., Yang, M., Hwang, C., N'Diaye, A. T., Arenholz, E., Li, J., & Qiu, Z. Q. Electrical switching of the magnetic vortex circulation in artificial multiferroic structure of Co/Cu/PMN-PT(011). United States. doi:10.1063/1.4990987.
Li, Q., Tan, A., Scholl, A., Young, A. T., Yang, M., Hwang, C., N'Diaye, A. T., Arenholz, E., Li, J., and Qiu, Z. Q. Fri . "Electrical switching of the magnetic vortex circulation in artificial multiferroic structure of Co/Cu/PMN-PT(011)". United States. doi:10.1063/1.4990987. https://www.osti.gov/servlets/purl/1530291.
@article{osti_1530291,
title = {Electrical switching of the magnetic vortex circulation in artificial multiferroic structure of Co/Cu/PMN-PT(011)},
author = {Li, Q. and Tan, A. and Scholl, A. and Young, A. T. and Yang, M. and Hwang, C. and N'Diaye, A. T. and Arenholz, E. and Li, J. and Qiu, Z. Q.},
abstractNote = {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.},
doi = {10.1063/1.4990987},
journal = {Applied Physics Letters},
number = 26,
volume = 110,
place = {United States},
year = {2017},
month = {6}
}

Journal Article:
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Figures / Tables:

Figure 1 Figure 1: (a) Experimental geometry for uniaxial anisotropy measurements for Co/PMN-PT(011) under a perpendicularly applied electric field using ROTMOKE. (b) Sketch of the PMN-PT(011) crystal structure.

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