Time-dependent domain wall nucleation probability in field-coupled nanomagnets with perpendicular anisotropy

Stephan Breitkreutz; Andreas Fischer; Silmi Kaffah; Stephanie Weigl; Irina Eichwald; Grazvydas Ziemys; Doris Schmitt-Landsiedel; Markus Becherer

doi:10.1063/1.4906440

Time-dependent domain wall nucleation probability in field-coupled nanomagnets with perpendicular anisotropy

Stephan Breitkreutz, Andreas Fischer, Silmi Kaffah, Stephanie Weigl, Irina Eichwald, Grazvydas Ziemys, Doris Schmitt-Landsiedel, Markus Becherer

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In this paper, the domain wall (DW) nucleation time and the DW nucleation probability of field-coupled magnets with perpendicular magnetic anisotropy are measured by experiment. A well-established Arrhenius model based on thermally activated magnetization reversal is applied to describe the time-dependent DW nucleation probability. Magneto-optical microscopy(MOKE) is used in the experiments to determine the DW nucleation time and the DW nucleation probability in a pNML inverter structure. The DW propagation speed is measured in order to calculate the required DW propagation time for entire magnetization reversal of pNML logic gates. Experimental results are compared to the derived model. Our results show that the interaction in pNML logic gates plays a significant role for the time-dependent DW nucleation probability and therefore for the reliability of field-coupled circuits.

Original language	English
Article number	17B503
Journal	Journal of Applied Physics
Volume	117
Issue number	17
DOIs	https://doi.org/10.1063/1.4906440
State	Published - 7 May 2015

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abstract = "In this paper, the domain wall (DW) nucleation time and the DW nucleation probability of field-coupled magnets with perpendicular magnetic anisotropy are measured by experiment. A well-established Arrhenius model based on thermally activated magnetization reversal is applied to describe the time-dependent DW nucleation probability. Magneto-optical microscopy(MOKE) is used in the experiments to determine the DW nucleation time and the DW nucleation probability in a pNML inverter structure. The DW propagation speed is measured in order to calculate the required DW propagation time for entire magnetization reversal of pNML logic gates. Experimental results are compared to the derived model. Our results show that the interaction in pNML logic gates plays a significant role for the time-dependent DW nucleation probability and therefore for the reliability of field-coupled circuits.",

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AU - Breitkreutz, Stephan

AU - Fischer, Andreas

AU - Kaffah, Silmi

AU - Weigl, Stephanie

AU - Eichwald, Irina

AU - Ziemys, Grazvydas

AU - Schmitt-Landsiedel, Doris

AU - Becherer, Markus

PY - 2015/5/7

Y1 - 2015/5/7

N2 - In this paper, the domain wall (DW) nucleation time and the DW nucleation probability of field-coupled magnets with perpendicular magnetic anisotropy are measured by experiment. A well-established Arrhenius model based on thermally activated magnetization reversal is applied to describe the time-dependent DW nucleation probability. Magneto-optical microscopy(MOKE) is used in the experiments to determine the DW nucleation time and the DW nucleation probability in a pNML inverter structure. The DW propagation speed is measured in order to calculate the required DW propagation time for entire magnetization reversal of pNML logic gates. Experimental results are compared to the derived model. Our results show that the interaction in pNML logic gates plays a significant role for the time-dependent DW nucleation probability and therefore for the reliability of field-coupled circuits.

AB - In this paper, the domain wall (DW) nucleation time and the DW nucleation probability of field-coupled magnets with perpendicular magnetic anisotropy are measured by experiment. A well-established Arrhenius model based on thermally activated magnetization reversal is applied to describe the time-dependent DW nucleation probability. Magneto-optical microscopy(MOKE) is used in the experiments to determine the DW nucleation time and the DW nucleation probability in a pNML inverter structure. The DW propagation speed is measured in order to calculate the required DW propagation time for entire magnetization reversal of pNML logic gates. Experimental results are compared to the derived model. Our results show that the interaction in pNML logic gates plays a significant role for the time-dependent DW nucleation probability and therefore for the reliability of field-coupled circuits.

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Time-dependent domain wall nucleation probability in field-coupled nanomagnets with perpendicular anisotropy

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