Vortex-antivortex pair driven magnetization dynamics studied by micromagnetic simulations

Applied Physics Letters

Volumn 85, Issue 9, 2004, Pages 1568-1570

  Lee, Ki Suk ^a   Kang, Byoung Woo ^a,b   Yu, Young Sang ^a   Kim, Sang Koog ^a  

^a Seoul National University   (South Korea)

^b Massachusetts Institute of Technology   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

MAGNETIC VOTRICES; MAGNETIZATION DYNAMICS; RELAXATION DYNAMICS; VORTEX STATES;

COMPUTER SIMULATION; ELECTROMAGNETIC WAVE PROPAGATION; IRON; MAGNETIC FIELD EFFECTS; MAGNETIC FILMS; MAGNETIC RELAXATION; MAGNETOSTATICS; MICROSCOPIC EXAMINATION; NUCLEATION; SCANNING ELECTRON MICROSCOPY; ULTRATHIN FILMS;

MAGNETIZATION;

EID: 4844231983     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1784892     Document Type: Article

References (19)

1. A. Hubert and R. Schäfer, Magnetic Domains (Springer, Berlin, 1998).
2. M. Hehn, K. Ounadjela, J.-P. Bucher, F. Rousseaux, D. Decanini, B. Bartenlian, and C. Chappert, Science, 272, 1782 (1996).
3. R. P. Cowburn, D. K. Koltsov, A. O. Adeyeye, M. E. Weiland, and D. M. Tricker, Phys. Rev. Lett. 83, 1042 (1999).
4. T. Shinjo, T. Okuno, R. Hassdorf, K. Shigeto, and T. Ono, Science 289, 930 (2000).
5. J. Raabe, R. Pulwey, R. Sattler, T. Schweinböck, J. Zweck, and D. Weiss, J. Appl. Phys. 88, 4437 (2000).
6. A. Wachowiak, J. Wiebe, M. Bode, O. Pietzsch, M. Morgenstern, and R. Wiesendanger, Science 298, 577 (2002).
7. R. P. Cowburn, A. O. Adeyeye, and M. E. Weiland, New J. Phys. 1, 16 (1999).
8. K. Yu. Guslienko, V. Novosad, Y. Otani, H. Shima, and K. Fukamichi, Phys. Rev. B 65, 024414 (2001).
9. K. Yu. Guslienko, V. Novosad, Y. Otani, H. Shima, and K. Fukamichi, Appl. Phys. Lett. 78, 3848 (2001).
10. J. K. Ha, R. Hertel, and J. Kirschner, Phys. Rev. B 67, 224432 (2003).
11. N. Dao, S. L. Whittenburg, and R. P. Cowburn, J. Appl. Phys. 90, 5235 (2001).
12. R. Hertel and J. Kirschner, J. Magn. Magn. Mater. 270, 364 (2004).
13. S.-B. Choe, Y. Acremann, A. Scholl, A. Bauer, A. Doran, J. Stöhr, and H. A. Padmore, Science 304, 420 (2004).
14. S.-K. Kim, J. B. Kortright, and S.-C. Shin, Appl. Phys. Lett. 78, 2742 (2001).
15. P. Eames and E. D. Dahlberg (unpublished).
16. T. Okuno, K. Mibu, and T. Shinjo, J. Appl. Phys. 95, 3612 (2004).
17. For details, see http://math/nist.gov/oommf.
18. This large value is used to save computation time for micromagnetic simulations, although a much lower value is suitable for investigating such picotime-scale dynamic process. We also performed it with α=0.01 and confirmed that the resultant microstructures on V and V̄ remain similar to those calculated using α=0.5, except for the occurrence and propagation of magnetization waves starting at a position where V and V̄ collapse, as also found in Ref. 12. Further studies on the spin waves will be carried out.
19. ms abruptly decrease when V or V̄ is taken out through the boundary.