Spin wave-assisted reduction in switching field of highly coercive iron-platinum magnets

Nature Communications

Volumn 4, Issue , 2013, Pages

  Seki, Takeshi ^a   Utsumiya, Kazutoshi ^a   Nozaki, Yukio ^b   Imamura, Hiroshi ^c   Takanashi, Koki ^a  

^a TOHOKU UNIVERSITY   (Japan)

^b KEIO UNIVERSITY   (Japan)

^c NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY AIST   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

IRON; PLATINUM;

FREQUENCY ANALYSIS; ION EXCHANGE; IRON; MAGNETIC FIELD; MAGNETIC PROPERTY; MAGNETIZATION; MAGNITUDE; PLATINUM;

ARTICLE; MAGNET; MAGNETIC FIELD; PHYSICAL PHENOMENA; RADIOFREQUENCY; SPIN WAVE ASSISTED MAGNETIZATION SWITCHING;

EID: 84877756273     PISSN: None     EISSN: 20411723     Source Type: Journal    
DOI: 10.1038/ncomms2737     Document Type: Article

References (29)

1. Chappert, C., Fert, A. & Nguyen Van Dau, F. The emergency of spin electronics in data storage. Nat. Mater. 6, 813-823 (2007). (Pubitemid 350050577)
2. Thirion, C., Wernsdorfer, W. & Mailly, D. Switching of magnetization by nonlinear resonance studied in single nanoparticles. Nat. Mater. 2, 524-527 (2003).
3. 20 elements. Phys. Rev. Lett. 99, 227207 (2007).
4. 19 ellipsoid. Appl. Phys. Lett. 90, 062503 (2007).
5. Moriyama, T. et al. Microwave-assisted magnetization switching of Ni80Fe20 in magnetic tunnel junctions. Appl. Phys. Lett. 90, 152503 (2007).
6. Zhu, J.-G., Zhu, X. & Tang, Y. Microwave assisted magnetic recording. IEEE Trans. Magn. 44, 125-131 (2008). (Pubitemid 350281117)
7. Nozaki, Y., Narita, N., Tanaka, T. & Matsuyama, K. Microwave-assisted magnetization reversal in a Co/Pd multilayer with perpendicular magnetic anisotropy. Appl. Phys. Lett. 95, 082505 (2009).
8. Yoshioka, T. et al. Microwave-assisted magnetization reversal in a perpendicularly magnetized film. Appl. Phys. Exp. 3, 013002 (2010).
9. Boone, C. T., Katine, J. A., Marinero, E. E., Pisana, S. & Terris, B. D. Microwave-assisted magnetic reversal in perpendicular media. IEEE Magn. Lett. 3, 3500104 (2012).
10. Atkinson, D. & Cowburn, R. P. Heat-assisted magnetization switching in elongated submicrometer Permalloy structures. Appl. Phys. Lett. 85, 1386-1388 (2009).
11. Rottmayer, R. E. et al. Heat-assisted magnetic recording. IEEE Trans. Magn. 42, 2417-2421 (2006).
12. Prejbeanu, I. L. et al. Thermally assisted MRAM. J. Phys.: Condens. Matter 19, 165218 (2007).
13. Tsoi, M. et al. Excitation of a magnetic multilayer by an electric current. Phys. Rev. Lett. 80, 4281-4284 (1998). (Pubitemid 128621902)
14. Myers, E. B., Ralph, D. C., Katine, J. A., Louie, R. N. & Buhrman, R. A. Current-induced switching of domains in magnetic multilayer devices. Science 285, 867-870 (1999). (Pubitemid 29381982)
15. Weisheit, M. et al. Electric field-induced modification of magnetism in thin-film ferromagnets. Science 315, 349-351 (2007). (Pubitemid 46175509)
16. Li, S. et al. Microwave assisted magnetization reversal in composite media. Appl. Phys. Lett. 94, 202509 (2009).
17. Fal, T. J., Livesey, K. L. & Camley, R. E. Domain wall and microwave assisted switching in an exchange spring bilayer. J. Appl. Phys. 109, 093911 (2011).
18. 0-FePt/permalloy exchange-spring films. J. Appl. Phys. 110, 103911 (2011).
19. Kneller, E. F. & Hawig, R. The exchange-spring magnet: a new material principle for permanent magnets. IEEE Trans. Magn. 27, 3588-3600 (1991).
20. Counil, G. et al. Spin wave contributions to the high-frequency magnetic response of thin films obtained with inductive methods. J. Appl. Phys. 95, 5646-5652 (2004).
21. Novosad, V. et al. Magnetic vortex resonance in patterned ferromagnetic dots. Phys. Rev. B 72, 024455 (2005).
22. Demokritov, S. O., Hillebrands, B. & Slavin, A. N. Brillouin light scattering studies of confined spin waves: linear and nonlinear confinement. Phys. Reports 348, 441-489 (2001). (Pubitemid 33633667)
23. Livesey, K. L., Crew, D. C. & Stamps, R. L. Spin wave valve in an exchange spring bilayer. Phys. Rev. B 73, 184432 (2006).
24. Fullerton, E. E., Jiang, J. S., Grimsditch, M., Sowers, C. H. & Bader, S. D. Exchange-spring behavior in epitaxial hard/soft magnetic bilayers. Phys. Rev. B 58, 12193-12200 (1998). (Pubitemid 128478252)
25. Grimsditch, M. et al. Exchange-spring systems: coupling of hard and soft ferromagnets as measured by magnetization and Brillouin light scattering. J. Appl. Phys. 85, 5901-5904 (1999). (Pubitemid 129651013)
26. Schmool, D. S., Apolinário, A., Casoli, F. & Albertini, F. Ferromagnetic resonance study of Fe/FePt coupled films with perpendicular anisotropy. IEEE Trans. Magn. 44, 3087-3090 (2008).
27. Takanashi, K., Kamiguchi, Y., Fujimori, H. & Motokawa, M. Magnetization and magnetoresistance of Fe/Gd ferrimagnetic multilayer films. J. Phys. Soc. Jpn. 61, 3721-3731 (1992).
28. Mibu, K., Nagahama, T., Shinjo, T. & Ono, T. Magnetoresistance of Bloch-wall-type magnetic structures induced in NiFe/CoSm exchange-spring bilayers. Phys. Rev. B 58, 6442-6446 (1998). (Pubitemid 128490431)
29. Kiselev, S. I. et al. Microwave oscillations of a nanomagnet driven by a spin-polarized current. Nature 425, 380-383 (2003).