Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
권호 표지
DOI QR코드

DOI QR Code

Optimization of Ferromagnetic Resonance Spectra Measuring Procedure for Accurate Gilbert Damping Parameter in Magnetic Thin Films Using a Vector Network Analyzer

  • Kim, D.H. (Department of Physics, Inha University) ;
  • Kim, H.H. (Department of Physics, Inha University) ;
  • You, Chun-Yeol (Department of Physics, Inha University) ;
  • Kim, Hyung-Suk (Department of Electrical Engineering, Kwangwoon University)
  • Received : 2011.05.17
  • Accepted : 2011.08.04
  • Published : 2011.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

We optimize a vector network analyzer ferromagnetic resonance (VNA-FMR) measurement system to study spin dynamics and Gilbert damping parameters of thin ferromagnetic films. In order to obtain accurate damping parameters, careful determination of the susceptibility line-width is required. The measured S-parameters are converted into the corresponding susceptibility through a calibration processes. From the line-width measurements, we can successfully extract the saturation magnetizations and Gilbert damping parameters of 5-, 8-, and 10-nm thick $Ni_{81}Fe_{19}$ (Py) films.

Keywords

References

  1. J. F. Gantz, C. Chute, A. Manfrediz, S. Minton, D. Reinsel, W. Schlichting, and A. Toncheva, The Diverse and Exploding Digital Universe, An IDC white paper (2008) pp. 1-16.
  2. R. Beach, T. Min, C. Horng, Q. Chen, P. Sherman, S. Le, S. Young, K. Yang, H. Yu, X. Lu, W. Kula, T. Zhong, R. Xiao, A. Zhong, G. Liu, J. Kan, J. Yuan, J. Chen, R. Tong, J. Chien, T. Torng, D. Tang, P. Wang, M. Chen, S. Assefa, M. Qazi, J. DeBrosse, M. Gaidis, S. Kanakasabapathy, Y. Lu, J. Nowak, E. O'Sullivan, T. Maffitt, J. Z. Sun, and W. J. Gallagher Tech. Dig. IEDM 08-305 (2008).
  3. S. S. P. Parkin, U.S. Patent No. 6834005 (2004).
  4. S. S. P. Parkin, M. Hayashi, and L. Thomas, Science 320, 190 (2008). https://doi.org/10.1126/science.1145799
  5. S. Kaka, M. R. Pufall, W. H. Rippard, T. J. Silva, S. E. Russek, and J. A. Katine, Nature 437, 389 (2005). https://doi.org/10.1038/nature04035
  6. C.-Y. You, J. Magn. Magn. Mater. 321, 888 (2009); C.-Y. You, Appl. Phys. Lett. 92, 192514 (2008); C.-Y. You, Appl. Phys. Lett. 92, 152507 (2008). https://doi.org/10.1063/1.2912521
  7. IEICE Tech. Rep. 109, SDM2009-114, 91 (2009).
  8. C. Bilzer, PhD thesis, Universite Paris-Sud 11, France (2007).
  9. Anthony B. Kos, Thomas J. Silva, and Pavel Kabos, Rev. Sci. Instrum. 73, 3563 (2002). https://doi.org/10.1063/1.1505657
  10. M. B. An, D. Olligs, and C. Fermon, Phys. Rev. Lett. 91, 137204 (2003). https://doi.org/10.1103/PhysRevLett.91.137204
  11. U. Ebels, L. D. Buda, K. Ounadjela, and P. E. Wigen, Spin Dynamics in Confined Magnetic Structures I, Springer, Berlin (2002) pp. 167-216.
  12. Y.-H. Shin, S.-S. Ha, D.-H. Kim, and C.-Y. You, J. Korean Magn. Soc. 20, 18 (2010). https://doi.org/10.4283/JKMS.2010.20.1.018
  13. D.-H. Kim and C.-Y. You, The Korean Physical Society 2010 Conference, Dp-I-012, Daejeon, April 21-23 (2010)
  14. D.-H. Kim and C.-Y. You, The Korean Magnetic Society 2010 Conference, S11, Wonju, June 10-12 (2010).
  15. http://www.cmicro.com/
  16. http://www.ggb.com/
  17. http://www.cmicro.com/products/calibration-tools/wincalxe/wincal-xe-software1
  18. C. Bilzer, T. Devolder, P. Crozat, and C. Chappert, J. Appl. Phys. 101, 074505 (2007). https://doi.org/10.1063/1.2716995
  19. C. Bilzer, T. Devolder, P. Crozat, and C. Chappert, IEEE Trans. Magn. 44, 3265 (2008). https://doi.org/10.1109/TMAG.2008.2004379

Cited by

  1. Static and Dynamic Analysis of Magnetic Tunnel Junctions With Wedged MgO Barrier vol.51, pp.1, 2015, https://doi.org/10.1109/TMAG.2014.2359077
  2. A short-circuited coplanar waveguide to measure the permeability of magnetic thin films: Comparison with short-circuited microstrip line vol.86, pp.11, 2015, https://doi.org/10.1063/1.4935499
  3. High-frequency behavior of FeN thin films fabricated by using reactive sputtering vol.69, pp.3, 2016, https://doi.org/10.3938/jkps.69.304
  4. FeAl with perpendicular anisotropy vol.110, pp.25, 2017, https://doi.org/10.1063/1.4989379
  5. Spin orientation driven static and dynamic magnetic process in amorphous FeCoBSi thin films vol.117, pp.21, 2015, https://doi.org/10.1063/1.4921973