Magnetostatic effects on switching in small magnetic tunnel junctions

Applied Physics Letters

Volumn 108, Issue 2, 2016, Pages

  Bapna, Mukund ^a   Piotrowski, Stephan K ^a   Oberdick, Samuel D ^a   Li, Mingen ^b   Chien, C L ^b   Majetich, Sara A ^a  

^a CARNEGIE MELLON UNIVERSITY   (United States)

^b JOHNS HOPKINS UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ATOMIC FORCE MICROSCOPY; COBALT COMPOUNDS; HYSTERESIS; MAGNETIC DEVICES; MAGNETIC FIELDS; MAGNETISM; MAGNETOSTATICS; TUNNELLING MAGNETORESISTANCE;

ANTIPARALLEL-TO-PARALLEL SWITCHING; APPLIED MAGNETIC FIELDS; CONDUCTIVE ATOMIC FORCE MICROSCOPY; MAGNETIC TUNNEL JUNCTION; MAGNETOSTATIC FIELD; SPATIAL IN-HOMOGENEITY; SPATIALLY INHOMOGENEOUS; TUNNEL MAGNETORESISTANCE;

TUNNEL JUNCTIONS;

EID: 84955465048     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.4939911     Document Type: Article

References (19)

1. H. Sato, M. Yamanouchi, K. Miura, S. Ikeda, H. D. Gan, K. Mizunuma, R. Koizumi, F. Matsukura, and H. Ohno, " Junction size effect on switching current and thermal stability in CoFeB/MgO perpendicular magnetic tunnel junctions," Appl. Phys. Lett. 99, 042501 (2011). 10.1063/1.3617429
2. D. C. Worledge, D. W. Abraham, J. Z. Sun, P. L. Trouilloud, J. Nowak, S. Brown, M. C. Gaidis, E. J. O'Sullivan, and R. P. Robertazzi, " Spin torque switching of perpendicular Ta|CoFeB|MgO-based magnetic tunnel junctions," Appl. Phys. Lett. 98, 022501 (2011). 10.1063/1.3536482
3. J. P. Cascales, D. Herranz, J. L. Sambricio, U. Ebels, J. A. Katine, and F. G. Aliev, " Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis," Appl. Phys. Lett. 102, 092404 (2013). 10.1063/1.4794537
4. X. Zhang, Z. Zhang, Y. Liu, and Q. Y. Jin, " Simulation of electric-field and spin-transfer-torque induced magnetization switching in perpendicular magnetic tunnel junctions," J. Appl. Phys. 117, 17A701 (2015). 10.1063/1.4906201
5. P. K. Amiri, Z. M. Zeng, J. Langer, G. Rowlands, Y.-J. Chen, I. N. Krivorotov, J. P. Wang, H. W. Jiang, J. A. Katine, Y. Huai, K. Galatsis, and K. L. Wang, " Switching current reduction using perpendicular anisotropy in CoFeB-MgO magnetic tunnel junctions," Appl. Phys. Lett. 98, 112507 (2011). 10.1063/1.3567780
6. W.-G. Wang, M. Li, S. Hageman, and C. L. Chien, " Electric field-assisted switching in magnetic tunnel junctions," Nat. Mater. 11, 64 (2012). 10.1038/nmat3171
7. S. K. Piotrowski, M. Bapna, H. Almasi, W.-G. Wang, L. Tryputen, C. A. Ross, M. Li, C.-L. Chien, and S. A. Majetich, " Conductive atomic force microscopy of small magnetic tunnel junctions with interface anisotropy," IEEE Trans. Mag. 51, 4400504 (2015). 10.1109/TMAG.2015.2434798
8. See supplementary material at http://dx.doi.org/10.1063/1.4939911 E-APPLAB-108-022603 for further details on sample preparation, analysis methods, and additional data.
9. Y. Yuzhelevski, M. Yuzhelevski, and G. Jung, " Random telegraph noise analysis in time domain," Rev. Sci. Instrum. 71, 1681 (2000). 10.1063/1.1150519
10. D. E. Endean, C. T. Weigelt, R. H. Victora, and E. D. Dahlberg, " Tunable random telegraph noise in individual square permalloy dots," Appl. Phys. Lett. 104, 252408 (2014). 10.1063/1.4884818
11. W. Rippard, R. Heindl, M. Pufall, S. Russek, and A. Kos, " Thermal relaxation rates of magnetic nanoparticles in the presence of magnetic fields and spin-transfer effects," Phys. Rev. B 84, 064439 (2011). 10.1103/PhysRevB.84.064439
12. S. K. Piotrowski, M. F. Matty, and S. A. Majetich, " Magnetic fluctuations in individual superparamagnetic particles," IEEE Trans. Mag. 50, 2303704 (2014). 10.1109/TMAG.2014.2321327
13. H. Sato, E. C. I. Enobio, S. Ikeda, S. Fukami, S. Kanai, F. Matsukura, and H. Ohno, " Properties of magnetic tunnel junctions with a MgO/CoFeB/Ta/CoFeB/MgO recording structure down to junction diameter of 11 nm," Appl. Phys. Lett. 105, 062403 (2014). 10.1063/1.4892924
14. W. G. Wang and C. L. Chien, " Voltage-induced switching in magnetic tunnel junctions with perpendicular magnetic anisotropy," J. Phys. D: Appl. Phys. 46, 074004 (2013). 10.1088/0022-3727/46/7/074004
15. J. W. Chenchen, M. A. K. Bin Akhtar, R. Sbiaa, M. Hao, L. Y. H. Sunny, W. S. Kai, L. Ping, P. Carlberg, and A. K. S. Arthur, " Size dependence effect in MgO-based CoFeB tunnel junctions with perpendicular anisotropy," Jpn. J. Appl. Phys., Part 1 51, 013101 (2012). 10.1143/JJAP.51.013101
16. J. Norpoth, S. Dreyer, and Ch. Joos, " Straightforward field calculations for uniaxial hardmagnetic prisms: Stray field distributions and dipolar coupling in regular arrays," J. Phys. D: Appl. Phys. 41, 025001 (2008). 10.1088/0022-3727/41/2/025001
17. J. M. Shaw, S. E. Russek, T. Thomson, M. J. Donohue, B. D. Terris, O. Hellwig, E. Dobisz, and M. L. Schneider, " Reversal mechanisms in perpendicularly magnetized nanostructures," Phys. Rev. B 78, 024414 (2008). 10.1103/PhysRevB.78.024414
18. J. Cucchiara, Y. Henry, D. Ravelosona, D. Lacour, E. E. Fullerton, J. A. Katine, and S. Mangin, " Telegraph noise due to domain wall motion driven by spin current in perpendicular magnetized nanopillars," Appl. Phys. Lett. 94, 102503 (2009). 10.1063/1.3089569
19. D. B. Gopman, D. Bedeau, S. Mangin, E. E. Fullerton, J. A. Katine, and A. D. Kent, " Asymmetric switching behavior in perpendicularly magnetized spin-valve nanopillars due to the polarizer dipole field," Appl. Phys. Lett. 100, 062404 (2012). 10.1063/1.3681792