Magnetic vortex core reversal by excitation with short bursts of an alternating field

Nature

Volumn 444, Issue 7118, 2006, Pages 461-464

  Van Waeyenberge, B ^a,b   Puzic, A ^a   Stoll, H ^a   Chou, K W ^a   Tyliszczak, T ^c   Hertel, R ^d   Fahnle M ^a   Bruckl H ^e,g   Rott, K ^e   Reiss, G ^e   Neudecker, I ^f   Weiss, D ^f   Back, C H ^f   Schutz G ^a  

^a MAX PLANCK INSTITUTE FOR INTELLIGENT SYSTEMS   (Germany)

^b GHENT UNIVERSITY   (Belgium)

^c LAWRENCE BERKELEY NATIONAL LABORATORY   (United States)

^d FORSCHUNGSZENTRUM JÜLICH   (Germany)

^e BIELEFELD UNIVERSITY   (Germany)

^f UNIVERSITY OF REGENSBURG   (Germany)

^g Division 'Nano System Technology'   (Austria)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRIC EXCITATION; FERROMAGNETIC MATERIALS; MAGNETIC FLUX; MAGNETIZATION; MAGNETOSTATICS; VORTEX FLOW;

ALTERNATING FIELD; FLUX DOMAIN STRUCTURE; MAGNETIC VORTEX CORE; SHORT BURSTS;

MAGNETIC CORES;

MAGNETIC FIELD; MAGNETIC PROPERTY; MAGNETIZATION; SCANNING ELECTRON MICROSCOPY; VORTEX;

ARTICLE; CIRCULAR DICHROISM; COMPUTER MEMORY; ELECTRONICS; MAGNETIC RANDOM ACCESS MEMORY; MAGNETISM; POLARIZATION; PRIORITY JOURNAL; RADIOFREQUENCY; VORTEX MOTION;

EID: 33751341020     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature05240     Document Type: Article

References (27)

1. Hubert, A. & Schäfer, R. Magnetic Domains-the Analysis of Magnetic Microstructures (Springer, Berlin, 1998).
2. Raabe, J. et al. Magnetization pattern of ferromagnetic nanodisks. J. Appl. Phys. 88, 4437-4439 (2000).
3. Shinjo, T., Okuno, T., Hassdorf, R., Shigeto, K. & Ono, T. Magnetic vortex core observation in circular dots of permalloy. Science 289, 930-932 (2000).
4. Ross, C. et al. Micromagnetic behavior of electrodeposited cylinder arrays. Phys. Rev. B 65, 144417 (2002).
5. Feldtkeller, E. & Thomas, H. Struktur und Energie von Blochlinien in dünnen ferromagnetischen Schichten. Phys. Kondens. Mater. 4, 8-14 (1965).
6. Miltat, J. & Thiaville, A. Vortex cores-smaller than small. Science 298, 555 (2002).
7. Wachowiak, A. et al. Direct observation of internal spin structure of magnetic vortex cores. Science 298, 577-580 (2002).
8. Thiele, A. Steady-state motion of magnetic domains. Phys. Rev. Lett. 30, 230-233 (1973).
9. Huber, D. Equation of motion of a spin vortex in a two-dimensional planar magnet. J. Appl. Phys. 53, 1899-1900 (1982).
10. Choe, S. et al. Vortex core-driven magnetization dynamics. Science 304, 420-422 (2004).
11. Park, J. & Crowell, P. Interactions of spin waves with a magnetic vortex. Phys. Rev. Lett. 95, 167201 (2005).
12. Stoll, H. et al. High-resolution imaging of fast magnetization dynamics in magnetic nanostructures. Appl. Phys. Lett. 84, 3328-3330 (2004).
13. Höllinger, R., Killinger, A. & Krey, U. Statics and fast dynamics of nanomagnets with vortex structure. J. Magn. Magn. Mater. 261, 178-189 (2003).
14. Vavassori, P., Grimsditch, M., Metlushko, V., Zaluzec, N. & Ilic, B. Magnetoresistance of single magnetic vortices. Appl. Phys. Lett. 86, 072507 (2005).
15. Taniuchi, T., Oshima, M., Akinaga, H. & Ono, K. Vortex-chirality control in mesoscopic disk magnets observed by photoelectron emission microscopy. J. Appl. Phys. 97, 10J904 (2005).
16. Okuno, T., Shigeto, K., Ono, T., Mibu, K. & Shinjo, T. MFM study of magnetic vortex cores in circular permalloy dots: Behavior in external field. J. Magn. Magn. Mater. 240, 1-6 (2002).
17. Thiaville, A., Garcia, J., Dittrich, R., Miltat, J. & Schrefl, T. Micromagnetic study of Bloch-point-mediated vortex core reversal. Phys. Rev. B 67, 094410 (2003).
18. Argyle, B., Terrenzio, E. & Slonczewski, J. Magnetic vortex dynamics using the optical Cotton-Mouton effect. Phys. Rev. Lett. 53, 190-193 (1984).
19. Park, J., Eames, P., Engebretson, D., Berezovsky, J. & Crowell, P. Imaging of spin dynamics in closure domain and vortex structures. Phys. Rev. B 67, 020403 (2003).
20. Schütz, G. et al. Absorption of circularly polarized x-rays in iron. Phys. Rev. Lett. 58, 737-740 (1987).
21. Novosad, V. et al. Magnetic vortex resonance in patterned ferromagnetic dots. Phys. Rev. B 72, 024455 (2005).
22. Lee, K. S., Choi, S. & Kim, S. K. Radiation of spin waves from magnetic vortex cores by their dynamic motion and annihilation processes. Appl. Phys. Lett. 87, 192502 (2005).
23. Döring, W. Point singularities in micromagnetism. J. Appl. Phys. 39, 1006-1007 (1964).
24. Guslienko, K. et al. Eigenfrequencies of vortex state excitations in magnetic submicron-size disks. J. Appl. Phys. 91, 8037-8039 (2002).
25. Kilcoyne, A. et al. Interferometer-controlled scanning transmission x-ray microscopes at the advanced light source. J. Synchrotron Radiat. 10, 125-136 (2003).
26. Puzic, A. et al. Spatially resolved ferromagnetic resonance: Imaging of ferromagnetic eigenmodes. J. Appl. Phys. 97, 10E704 (2005).
27. Donahue, M. & Porter, D. OOMMF User's Guide, version 1.0. Interagency Report NISTIR 6376 (National Institute of Standards and Technology, Gaithersburg, Maryland, 1999).