Dynamic control of metastable remanent states in mesoscale magnetic elements

Ding, J.; Jain, S.; Pearson, J. E.; Lendinez, S.; Khovaylo, V.; Novosad, V.

doi:10.1063/1.4906959

Dynamic control of metastable remanent states in mesoscale magnetic elements

Journal Article · Wed Feb 04 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4906959· OSTI ID:1356369

Ding, J. ^[1]; Jain, S. ^[2]; Pearson, J. E. ^[1]; Lendinez, S. ^[3]; Khovaylo, V. ^[4]; Novosad, V. ^[1]

Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); HGST, A Western Digital Company, San Jose, CA (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. de Barcelona (Spain)
National Univ. of Science and Technology “MISiS,” Moscow (Russia); ITMO Univ., St. Petersburg (Russia)

The formation of the vortex-antivortex-vortex (v-av-v) metastable remanent states in elongated magnetic elements have been systematically investigated using micromagnetic modeling. It is demonstrated that the v-av-v magnetization pattern can be effectively stabilized by exciting the single vortex state with an external RF field. Furthermore, we show that a set of different polarity combinations of the vortex cores can be achieved by adjusting the frequency and amplitude of the excitation field. Here, the corresponding dynamic response in time- and frequency-domain has also been presented. Owing to the diversity of the collective modes with different vortex-antivortex combinations, this system may open promising perspectives in the area of spin transfer torque oscillators.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: Russian Federation, Ministry of Education and Science; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1356369

Alternate ID(s):: OSTI ID: 1421132
OSTI ID: 22403040

Journal Information:: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 17 Vol. 117; ISSN 0021-8979

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

Country of Publication:: United States

Language:: English

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