DOI: 10.1063/1.3002419. Time dependence of magnetization reversal influenced by current in perpendicularly magnetized Co/Pt thin film

Time dependence of magnetization reversal influenced by current in perpendicularly magnetized Co/Pt thin film

10.1063/1.3002419

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

We have investigated thermally activated magnetization reversal influenced by the current in a Co/Pt thin film with perpendicular magnetic anisotropy at room temperature by measuring the extraordinary Hall effect. The magnetization could reverse in a fixed magnetic field lower than the coercive field as increasing the current, which depends on the current-sweep rate. The characteristic current for zero net magnetization is small for a low current-sweep rate and a high fixed field. Magnetization reversal becomes fast for a high current-sweep rate and a high fixed field. With the constant current, the magnetization reversal is fast for a large current and a high fixed field. The magnitude of the propagation field HP∗ reduces more than 70 Oe when the current density J reaches 1.25×105 A/cm2, which is mainly on account of the sample temperature rise due to current-induced Joule heating. Also, the effective field HI associated with spin transfer and momentum transfer perhaps has a contribution to magnetization reversal through thermal activation in a multidomain macroscopic thin film. The results show that the Joule heating and current associated effective field can reduce the activation energy barriers and speed up magnetization reversal besides the applied magnetic field.

Bibliography

Xie, K. X., Lin, W. W., Sun, H. C., Nie, Y., & Sang, H. (2008). Time dependence of magnetization reversal influenced by current in perpendicularly magnetized Co/Pt thin film. Journal of Applied Physics, 104(8).

Authors 5

K. X. Xie (first)
W. W. Lin (additional)
H. C. Sun (additional)
Y. Nie (additional)
H. Sang (additional)

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Dates

Type	When
Created	16 years, 10 months ago (Oct. 24, 2008, 6:18 p.m.)
Deposited	2 years, 1 month ago (July 3, 2023, 8:31 p.m.)
Indexed	3 weeks, 3 days ago (Aug. 6, 2025, 9:53 a.m.)
Issued	16 years, 10 months ago (Oct. 15, 2008)
Published	16 years, 10 months ago (Oct. 15, 2008)
Published Online	16 years, 10 months ago (Oct. 24, 2008)
Published Print	16 years, 10 months ago (Oct. 15, 2008)

Funders 0

None

BibTeX

@article{Xie_2008, title={Time dependence of magnetization reversal influenced by current in perpendicularly magnetized Co/Pt thin film}, volume={104}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.3002419}, DOI={10.1063/1.3002419}, number={8}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Xie, K. X. and Lin, W. W. and Sun, H. C. and Nie, Y. and Sang, H.}, year={2008}, month=oct }

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