Tuning the magnetodynamic properties of all-perpendicular spin valves using He+ irradiation
Source abstract
Abstract
Using He+ ion irradiation, we demonstrate how the magnetodynamic properties of both ferromagnetic layers in all-perpendicular [Co/Pd]/Cu/[Co/Ni] spin valves can be tuned by varying the He+ ion fluence. As the perpendicular magnetic anisotropy of both layers is gradually reduced by the irradiation, different magnetic configurations can be achieved from all-perpendicular (↑↑), through orthogonal (→↑), to all in-plane (⇉). In addition, both the magnetic damping (α) and the inhomogeneous broadening (ΔH0) of the Co/Ni layer improve substantially with increasing fluence. While the GMR of the spin valve is negatively affected, decreasing linearly from an original value of 1.14% to 0.4% at the maximum fluence of 50×1014 He+/cm2, most of the Co/Ni layer improvement is achieved already at a fluence of 10×1014 He+/cm2, for which GMR only reduces to 0.9%.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic properties of thin films · Magnetic Properties and Applications · Advanced Memory and Neural Computing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology 1 , Electrum 229, SE-16440 Kista, Sweden
NanOsc AB 2 , Kista 164 40, Sweden
Department of Physics and Astronomy, Uppsala University 3 , 751 20 Uppsala, Sweden
Institut d’Electronique Fondamentale, CNRS, Université Paris-Sud, Université Paris-Saclay 4 , 91405 Orsay, France
Department of Physics, University of Gothenburg 5 , 412 96 Gothenburg, Sweden
Spin-Ion Technologies 6 , 28 rue du general Leclerc, 78000 Versailles Cedex, France
Funding
China Scholarship Council · Knut och Alice Wallenbergs Stiftelse · Vetenskapsrådet
References (47)
Show source-provided references
1. Science · 2005 · 743 · 50810.1126/science.1110549 ↗
2. IEEE Trans. Magn. · 2005 · 41 · 13210.1109/tmag.2004.840847 ↗
3. Mater. Today · 2017 · 20 · 53010.1016/j.mattod.2017.07.007 ↗
4. Nat. Mater. · 2014 · 13 · 1110.1038/nmat3823 ↗
5. Nat. Mater. · 2007 · 6 · 81310.1038/nmat2024 ↗
6. Nature · 2003 · 425 · 38010.1038/nature01967 ↗
7. Phys. Rev. Lett. · 2004 · 92 · 02720110.1103/physrevlett.92.027201 ↗
8. Phys. Rev. B · 1996 · 54 · 935310.1103/physrevb.54.9353 ↗
9. J. Magn. Magn. Mater. · 1996 · 159 · L110.1016/0304-8853(96)00062-5 ↗
10. J. Magn. Magn. Mater. · 1999 · 195 · 26110.1016/S0304-8853(99)00043-8 ↗
11. Phys. Rev. Lett. · 2010 · 105 · 21720410.1103/physrevlett.105.217204 ↗
12. Phys. Rev. Lett. · 2013 · 110 · 25720210.1103/physrevlett.110.257202 ↗
13. Phys. Rev. B · 2010 · 82 · 05443210.1103/physrevb.82.054432 ↗
14. High frequency operation of a spin-torque oscillator at low field10.1002/pssr.201105375 ↗
15. Science · 2013 · 339 · 129510.1126/science.1230155 ↗
16. Physica B · 2014 · 435 · 8410.1016/j.physb.2013.10.023 ↗
17. J. Appl. Phys. · 2014 · 115 · 17261210.1063/1.4870696 ↗
18. Phys. Rev. Lett. · 2014 · 112 · 04720110.1103/physrevlett.112.047201 ↗
19. Nat. Nanotechnol. · 2014 · 9 · 99210.1038/nnano.2014.255 ↗
20. Phys. Rev. B · 2015 · 92 · 17442610.1103/physrevb.92.174426 ↗
21. Nat. Commun. · 2016 · 7 · 1120910.1038/ncomms11209 ↗
22. Phys. Rev. B · 2017 · 95 · 02410610.1103/physrevb.95.024106 ↗
23. Phys. Rev. B · 2016 · 93 · 09443110.1103/physrevb.93.094431 ↗
24. Phys. Rev. Applied · 2017 · 7 · 05402710.1103/physrevapplied.7.054027 ↗
25. Phys. Rev. Lett. · 2018 · 120 · 21720410.1103/physrevlett.120.217204 ↗
26. J. Appl. Phys. · 2014 · 115 · 17261510.1063/1.4870917 ↗
27. Science · 1998 · 280 · 191910.1126/science.280.5371.1919 ↗
28. Appl. Phy. Lett. · 2002 · 80 · 27910.1063/1.1432108 ↗
29. Phys. Rev. B · 2009 · 80 · 18041510.1103/physrevb.80.180415 ↗
30. J. Appl. Phys. · 2008 · 103 · 07B52910.1063/1.2838228 ↗
31. J. Appl. Phys. · 2011 · 109 · 03391710.1063/1.3544474 ↗
32. Phys. Rev. B · 1989 · 39 · 482810.1103/physrevb.39.4828 ↗
33. Phys. Rev. Lett. · 1988 · 61 · 247210.1103/physrevlett.61.2472 ↗
34. Phys. Rev. B · 2000 · 62 · 579410.1103/physrevb.62.5794 ↗
35. J. Phys. D: Appl. Phys. · 2004 · 37 · R17910.1088/0022-3727/37/16/r01 ↗
36. G. Woltersdorf, Ph.D thesis, Simon Fraser University (2004).
37. Phys. Rev. B · 2015 · 92 · 02442710.1103/physrevb.92.024427 ↗
38. J. Phys. D: Appl. Phys. · 2013 · 46 · 12500410.1088/0022-3727/46/12/125004 ↗
39. Appl. Phy. Lett. · 2011 · 98 · 17250210.1063/1.3580612 ↗
40. Phys. Rev. · 1949 · 76 · 74310.1103/physrev.76.743 ↗
41. IEEE Trans. Mag. · 2004 · 40 · 344310.1109/tmag.2004.836740 ↗
42. Phys. Rev. Lett. · 2008 · 101 · 03720710.1103/physrevlett.101.037207 ↗
43. Phys. Rev. B · 1998 · 58 · 561110.1103/physrevb.58.5611 ↗
44. Phys. Rev. Lett. · 2003 · 90 · 22760110.1103/physrevlett.90.227601 ↗
45. AIP Adv. · 2017 · 7 · 05602910.1063/1.4978004 ↗
46. Phys. Rev. B · 2017 · 95 · 13441110.1103/PhysRevB.95.134411 ↗
47. Appl. Phys. Lett. · 2005 · 86 · 02250310.1063/1.1846935 ↗