Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Formula of Depinning Fields from Notches in Ferromagnetic Permalloy Nanowire

  • Kim, Kab-Jin (Center for Subwavelength Optics and School of Physics, Seoul National University) ;
  • You, Chun-Yeol (Department of Physics, Inha University) ;
  • Choe, Sug-Bong (Center for Subwavelength Optics and School of Physics, Seoul National University)
  • Published : 2008.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

A simplified equation of depinning fields from notches of ferromagnetic Permalloy nanowires is presented. The derived equation is given in the form of an explicit function of nanowire width and thickness, and notch depth and angle. The equation agrees with all micromagnetic simulation results to an accuracy of ${\pm}$ 0.5 mT.

Keywords

References

  1. L. Thomas, M. Hayashi, X. Jiang, R. Moriya, C. Rettner, and S. S. P, Parkin, Nature 443, 197 (2006) https://doi.org/10.1038/nature05093
  2. D. A. Allwood, G. Xiong, C. Faulkner, D. Atkinson, D. Petit, and R. P, Cowburn, Science 309, 1688 (2005) https://doi.org/10.1126/science.1108813
  3. M. Tsoi, R. E. Fontana, and S. S. P. Parkin, Appl. Phys. Lett. 83, 2617 (2003) https://doi.org/10.1063/1.1578165
  4. J. Grollier, P. Boulenc, V. Cros, A. Hamzi, A. Vaures, A. Fert, and G. Faini, Appl. Phys. Lett. 83, 509 (2003) https://doi.org/10.1063/1.1590422
  5. C. K. Lim, T. Devolder, C. Chappert, J. Grollier, V. Cros, A. Vaures, A. Fert, and G. Faini, Appl. Phys. Lett. 84, 2820 (2004) https://doi.org/10.1063/1.1711168
  6. S. Lepadatu and Y. B. Xu, Phys. Rev. Lett. 92, 127201 (2004) https://doi.org/10.1103/PhysRevLett.92.127201
  7. M. Klaui, H. Ehrke, U. Rudiger, T. Kasama, R. E. Dunin- Borkowski, D. Backes, L. J. Heyderman, C. A. F. Vaz, J. A. C. Bland, G. Faini, E. Cambril, and W. Wernsdorfer, Appl. Phys. Lett. 87, 102509 (2005) https://doi.org/10.1063/1.2042542
  8. M. Hayashi, L. Thomas, Ya. B. Bazaliy, C. Rettner, R. Moriya, X. Jiang, and S. S. P. Parkin, Phys. Rev. Lett. 96, 197207 (2006) https://doi.org/10.1103/PhysRevLett.96.197207
  9. A. Yamaguchi, T. Ono, S. Nasu, K. Miyake, K. Mibu, and T. Shinjo, Phys. Rev. Lett. 92, 077205 (2004) https://doi.org/10.1103/PhysRevLett.92.077205
  10. M. Klaui, P.-O. Jubert, R. Allenspach, A. Bischof, J. A. C. Bland, G. Faini, U. Rüdiger, C. A. F. Vaz, L. Vila, and C. Vouille, Phys. Rev. Lett. 95, 026601 (2005) https://doi.org/10.1103/PhysRevLett.95.026601
  11. N. Vernier, D. A. Allwood, D. Atkinson, M. D. Cooke, and R. P, Cowburn, Europhys. Lett. 65, 526 (2004) https://doi.org/10.1209/epl/i2003-10112-5
  12. G. S. D. Beach, C. Knutson, C. Nistor, M. Tsoi, and J. L. Erskine, Phys. Rev. Lett. 97, 057203 (2006) https://doi.org/10.1103/PhysRevLett.97.057203
  13. M. Donahue and D. Porter, version 1.2a3, see http:// math.nist.gov/oommf/
  14. R. D. McMichael and M. J. Donahue, IEEE Trans. Magn. 33, 4167 (1997) https://doi.org/10.1109/20.619698
  15. M. Kläui, C. A. F. Vaz, J. A. C. Bland, and L. J. Heyderman, Appl. Phys. Lett. 85, 5637 (2004) https://doi.org/10.1063/1.1829800