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In-situ field induced enhancement of damping-like field and field-free switching in perpendicularly coupled Pt/Co and CoFeB bilayers sandwiched by an ultrathin PtMn/Ta layer.
- Source :
-
Journal of Magnetism & Magnetic Materials . Dec2022, Vol. 563, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • The SOT efficiency and field-free switching are enhanced by the presence of the in-situ field, in perpendicularly coupled Pt/Co and CoFeB bilayers sandwiched by an ultrathin PtMn/Ta layer. • Quantitative characterization indicates that the damping-like field, H DL , is boosted by an amount of up to 45%. • The tilted spin texture at the Co/PtMn interface caused by the presence of the in-situ field may play a role on the enhancement of SOT efficiency and field-free switching. Field-free switching of perpendicular magnetization and improvement of spin-orbit torque (SOT) efficiency are the keys for SOT-based devices towards ultrafast and low-power memory and computing applications. In this letter, we investigated pulse current induced magnetization switching and its efficiency in perpendicularly coupled Pt/Co and CoFeB bilayers sandwiched by an ultrathin PtMn/Ta layer, prepared in the presence/absence of an in-plane in-situ field. It is found that both the SOT efficiency and field-free switching are enhanced by the presence of the in-situ field. Quantitative characterization indicates that the damping-like field, H DL , is boosted by an amount of up to 45%. The tilted spin texture at the Co/PtMn interface caused by the presence of the in-situ field may play a role on the enhancement of SOT efficiency and field-free switching. Our findings not only provide a promising approach for SOT efficiency enhancement but also offer a possible layer stack for the integration of a full magnetic tunnel junction (MTJ) for low power memory and computing. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETIC tunnelling
*ATHLETIC fields
Subjects
Details
- Language :
- English
- ISSN :
- 03048853
- Volume :
- 563
- Database :
- Academic Search Index
- Journal :
- Journal of Magnetism & Magnetic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 160044426
- Full Text :
- https://doi.org/10.1016/j.jmmm.2022.169890