Large exchange-dominated domain wall velocities in antiferromagnetically coupled nanowires
Source abstract
Abstract
Magnetic nanowires supporting field- and current-driven domain wall motion are envisioned for methods of information storage and processing. A major obstacle for their practical use is the domain-wall velocity, which is traditionally limited for low fields and currents due to the Walker breakdown occurring when the driving component reaches a critical threshold value. We show through numerical and analytical modeling that the Walker breakdown limit can be extended or completely eliminated in antiferromagnetically coupled magnetic nanowires. These coupled nanowires allow for large domain-wall velocities driven by field and/or current as compared to conventional nanowires.
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Research context
OpenAlex topics: Magnetic properties of thin films · Physics of Superconductivity and Magnetism · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of California San Diego 1 Center for Magnetic Recording Research, , La Jolla, California 92093-0401, USA
University of Donja Gorica 2 Faculty of Polytechnics, , 81000 Podgorica, Montenegro
Université de Lorraine 3 Institut Jean Lamour, UMR CNRS 7198, , BP 70239, F-54506 Vandoeuvre-les-Nancy, France
Funding
National Science Foundation · Division of Materials Research · Agence Nationale de la Recherche
References (20)
Show source-provided references
1. 1979
2. Science · 2008 · 320 · 19010.1126/science.1145799 ↗
3. Nature Mat. · 2005 · 4 · 74110.1038/nmat1477 ↗
4. J. Appl. Phys. · 1993 · 73 · 640510.1063/1.352611 ↗
5. J. Magn. Magn. Mat. · 1996 · 159 · L110.1016/0304-8853(96)00062-5 ↗
6. Phys. Rev. B · 1996 · 54 · 935310.1103/PhysRevB.54.9353 ↗
7. J. Magn. Magn. Mat. · 2008 · 320 · 119010.1016/j.jmmm.2007.12.019 ↗
8. Appl. Phys. · 1974 · 45 · 540610.1063/1.1663252 ↗
9. Europhys. Lett. · 2005 · 69 · 99010.1209/epl/i2004-10452-6 ↗
10. Nature Mat. · 2011 · 10 · 41910.1038/nmat3020 ↗
11. Europhys. Lett. · 2012 · 100 · 5700210.1209/0295-5075/100/57002 ↗
12. Appl. Phys. Lett. · 2011 · 99 · 12250510.1063/1.3643037 ↗
13. Phys. Rev. Lett. · 2010 · 104 · 05720110.1103/PhysRevLett.104.057201 ↗
14. J. Appl. Phys. · 2008 · 103 · 07390610.1063/1.2887918 ↗
15. S. Parkin, L. Thomas, and S.-H. Yang, “Domain wall motion in perpendicularly magnetized wires having artificial antiferromagnetically coupled multilayers with engineered interfaces,” US patent 8,687,415 B2, April 1 (2014).
16. J. Appl. Phys. · 2011 · 109 · 07D35810.1063/1.3563081 ↗
17. 2012
18. OOMMF User’s Guide, Version 1.0, M.J. Donahue, and D.G. Porter, Interagency Report NISTIR 6376 (National Institute of Standards and Technology, 1999).
19. J. Magn. Magn. Mat. · 2002 · 242 · 106110.1016/S0304-8853(01)01353-1 ↗
20. Europhys. Lett. · 2007 · 78 · 5700710.1209/0295-5075/78/57007 ↗