Enhancement of spin-orbit torques in Ta/Co20Fe60B20/MgO structures induced by annealing
Source abstract
Abstract
Spin-orbit torques (SOTs) in Ta/CoFeB/MgO structures are studied by harmonic voltage method. The results indicate that both Slonczewski-like (HSL) and field-like (HFL) effective field are enhanced by annealing in the film stacks with various Ta thicknesses. Investigation of the crystallographic phase of the Ta layers and resistance of Hall bar devices suggest that annealing may induce a phase transformation in the Ta layers from the α to the β phase, which results in the enhanced HSL of the annealed samples. Current-induced magnetization switching experiments revealed a corresponding decrease of the switching current in the annealed samples because of their enhanced SOTs.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Magnetic properties of thin films · Magnetic Properties and Applications · Magnetic Properties of Alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University 1 , Lanzhou 730000, People’s Republic of China
School of Physical Science and Technology, Lanzhou University 2 , Lanzhou 730000, People’s Republic of China
INESC Microsistemas e Nanotecnologias (INESC MN) 3 , Lisbon 1000-029, Portugal
Instituto Superior Tecnico, Universidade de Lisboa 4 , Av. Rovisco Pais, Lisbon 1000, Portugal
References (48)
Show source-provided references
1. Science · 2012 · 336 · 55510.1126/science.1218197 ↗
2. Appl. Phys. Lett. · 2014 · 104 · 04240610.1063/1.4863407 ↗
3. Microelectron. Reliab. · 2012 · 52 · 184810.1016/j.microrel.2012.06.035 ↗
4. Appl. Phys. Lett. · 2014 · 104 · 01240310.1063/1.4858465 ↗
5. Nat. Nanotechnol. · 2014 · 9 · 5910.1038/nnano.2013.241 ↗
6. Phys. Rev. B · 2012 · 85 · 18040410.1103/physrevb.85.180404 ↗
7. J. Magn. Magn. Mater. · 2002 · 247 · 32410.1016/s0304-8853(02)00291-3 ↗
8. Nat. Mater. · 2012 · 11 · 37210.1038/nmat3311 ↗
9. Phys. Rev. B · 2013 · 87 · 02040210.1103/physrevb.87.020402 ↗
10. Phys. Rev. Lett. · 2002 · 88 · 23660110.1103/physrevlett.88.236601 ↗
11. Phys. Rev. Lett. · 2012 · 109 · 09660210.1103/physrevlett.109.096602 ↗
12. Appl. Phys. Lett. · 2012 · 101 · 12240410.1063/1.4753947 ↗
13. Phys. Rev. B · 2014 · 89 · 02441810.1103/physrevb.89.024418 ↗
14. Nat. Mater. · 2011 · 10 · 41910.1038/nmat3020 ↗
15. Nat. Mater. · 2010 · 9 · 23010.1038/nmat2613 ↗
16. Appl. Phys. Lett. · 2010 · 97 · 16250710.1063/1.3502596 ↗
17. Phys. Rev. Lett. · 2012 · 108 · 11720110.1103/physrevlett.108.117201 ↗
18. Phys. Rev. Lett. · 2009 · 102 · 13720210.1103/physrevlett.102.137202 ↗
19. Appl. Phys. Lett. · 2012 · 101 · 04240510.1063/1.4737899 ↗
20. Nat. Mater. · 2013 · 12 · 61110.1038/nmat3675 ↗
21. Nat. Nanotechnol. · 2013 · 8 · 52710.1038/nnano.2013.102 ↗
22. Phys. Rev. Lett. · 2012 · 109 · 18660210.1103/physrevlett.109.186602 ↗
23. Appl. Phys. Lett. · 2013 · 102 · 11241010.1063/1.4798288 ↗
24. IEEE Trans. Magn. · 2013 · 49 · 517210.1109/tmag.2013.2262947 ↗
25. Phys. Rev. Lett. · 2012 · 109 · 15660210.1103/physrevlett.109.156602 ↗
26. Nature · 2014 · 511 · 44910.1038/nature13534 ↗
27. Appl. Phys. Lett. · 2012 · 100 · 21240410.1063/1.4719677 ↗
28. Appl. Phys. Lett. · 2016 · 108 · 17240410.1063/1.4948342 ↗
29. Appl. Phys. Lett. · 2008 · 93 · 08250810.1063/1.2976435 ↗
30. Appl. Phys. Lett. · 2010 · 97 · 16250710.1063/1.3502596 ↗
31. Nat. Mater. · 2013 · 12 · 24010.1038/nmat3522 ↗
32. Phys. Rev. B · 2014 · 89 · 21441910.1103/physrevb.89.214419 ↗
33. AIP Advances · 2016 · 6 · 04500810.1063/1.4947132 ↗
34. Phys. Rev. B · 2014 · 89 · 14442510.1103/physrevb.89.144425 ↗
35. Appl. Phys. Lett. · 2014 · 105 · 21240410.1063/1.4902529 ↗
36. Phys. Rev. Lett. · 2016 · 116 · 13660110.1103/physrevlett.116.136601 ↗
37. Phys. Rev. Lett. · 2013 · 110 · 20660110.1103/physrevlett.110.206601 ↗
38. Nat. Nanotechnol. · 2013 · 8 · 58710.1038/nnano.2013.145 ↗
39. Appl. Phys. Lett. · 2015 · 107 · 23240710.1063/1.4937443 ↗
40. Appl. Phys. Lett. · 2016 · 108 · 20240610.1063/1.4951674 ↗
41. Phys. Rev. Lett. · 2011 · 106 · 03660110.1103/physrevlett.106.036601 ↗
42. Phys. Rev. Lett. · 2016 · 116 · 12660110.1103/physrevlett.116.126601 ↗
43. Phys. Rev. B · 2013 · 87 · 02040210.1103/physrevb.87.020402 ↗
44. Appl. Phys. Lett. · 2013 · 103 · 26240710.1063/1.4859656 ↗
45. Phys. Rev. B · 2013 · 88 · 21441710.1103/physrevb.88.214417 ↗
46. Phys. Rev. B · 2015 · 91 · 14441210.1103/physrevb.91.144412 ↗
47. Phys. Rev. B · 2016 · 93 · 180402(R)10.1103/physrevb.93.180402 ↗
48. Appl. Phys. Lett. · 2012 · 101 · 20240210.1063/1.4766351 ↗