Browse > Article
http://dx.doi.org/10.4283/JMAG.2009.14.4.168

Spin Torque Nano-Oscillator with an Exchange-Biased Free Rotating Layer  

You, Chun-Yeol (Department of Physics, Inha University)
Publication Information
Journal of Magnetics / v.14, no.4, 2009 , pp. 168-171 More about this Journal
Abstract
We propose a new type of spin torque nano-oscillator structure with an exchange- biased free rotating layer. The proposed spin torque nano-oscillator consists of a fixed layer and a free rotating layer with an additional anti-ferromagnetic layer, which leads to an exchange bias in the free rotating layer. The spin dynamics of the exchange-biased free rotating layer can be described as an additional exchange field because the exchange bias manifests itself by the existance of a finite exchange bias field. The exchange bias field plays a similar role to that of a finite external field. Hence, microwave generation can be achieved without an external field in the proposed structure.
Keywords
spin transfer torque; microwave oscillator; anti-ferromagnetic layer; exchange bias;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 2  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
연도 인용수 순위
1 J. C. Slonczewski, J. Magn. Magn. Mater. 159, L1 (1996)   DOI   ScienceOn
2 S. Kaka, M. R. Pufall, W. H. Rippard, T. J. Silva, S. E. Russek, and J. A. Katine, Nature 437, 389 (2005)   DOI   ScienceOn
3 J. C. Slonczewski, U.S. Patent No. 5695864 (1997)
4 S. I. Kiselev, J. C. Sankey, I. N. Krivorotov, N. C. Emley, R. J. Schoelkopf, R. A. Buhrman, and D. C. Ralph, Nature 425, 380 (2003)   DOI   ScienceOn
5 O. Boulle, V. Cros, J. Grollier, L. G. Pereira, C. Deranlot, F. Petroff, G. Faini, J. Barnaoe, and A. Fert, Nat. Phys. 3, 492 (2007)   DOI   ScienceOn
6 O. Boulle, V. Cros, J. Grollier, L. G. Pereira, C. Deranlot, F. Petroff, G. Faini, J. Barnaoe, and A. Fert, Phys. Rev. B 77, 174403 (2008)   DOI   ScienceOn
7 K. J. Lee, O. Redon, and B. Dieny, Appl. Phys. Lett. 86, 022505 (2005)   DOI   ScienceOn
8 Q. Mistral, M. van Kampen, G. Hrkac, J.-V. Kim, T. Devolder, P. Crozat, C. Chappert, L. Lagae, and T. Schrefl, Phys. Rev. Lett. 100, 257201 (2008)   DOI   ScienceOn
9 C.-Y. You, Korean patent pending (10-2009-0103323)
10 J. Bass, A. Sharma, Z. Wei, and M. Tsoi, J. Magnetics 13, 1 (2008)   과학기술학회마을   DOI   ScienceOn
11 K.-Y. Kim, D.-H. Kim, S.-C. Shin, and C.-Y. You, J. Korean Phys. Soc. 45, 1598 (2004)
12 L. Berger, J. Appl. Phys. 49, 2156 (1978): L. Berger, Phys. Rev. B 54, 9353 (1996)   DOI   ScienceOn
13 R. Beach, et al., Tech. Dig. IEDM 08-305 (2008)
14 C.-Y. You, Current Applied Physics (2009), doi:10.1016/j.cap.2009.11.079.   DOI   ScienceOn
15 S. S. P. Parkin, M. Hayashi, and L. Thomas, Science 320, 190 (2008)   DOI   ScienceOn
16 S. S. P. Pakrin, U.S. Patent No. 6834005 (2004)
17 W. H. Rippard, M. R. Pufall, S. Kaka, S. E. Russek, and T. J. Silva, Phys. Rev. Lett. 92, 027201 (2004)   DOI   ScienceOn
18 F. Radu and H. Zabel, “Exchange bias effect of ferro-/antiferromagnetic heterostructures (Springer, Berlin 2007), Vol. 227, p. 97.   DOI
19 P. M. Haney, C. Heiliger, and M. D. Stiles, Phys. Rev. B 79, 054405 (2009).   DOI   ScienceOn
20 J. A. Osborn, Phys. Rev. 67, 351 (1945)   DOI
21 K.-Y. Kim, D.-H. Kim, S.-C. Shin, and C.-Y. You, J. Korean Phys. Soc. 45, 1598 (2004).
22 K.-Y. Kim, D.-H. Kim, S.-C. Shin, and C.-Y. You, J. Appl. Phys. 95, 6867 (2004)   DOI   ScienceOn