volume | PIER Journals

Abstract

The strip-line frequency-domain technique for permeability measurement is compared to the field domain technique. The combined setup for microwave measurement of thin film permeability with both techniques is proposed. The field-domain technique is less affected by inhomogeneity of measurement strip cell and has significantly higher signal-to-noise ratio, but the obtained parameters are affected by film thickness and may differ from that of the frequency-domain technique. Analysis of the field-domain data obtained at a set of frequencies makes it possible to determine the saturation magnetisation, the anisotropy field and the damping factor without the knowledge of the amount of substance under study. In case of a simple permeability spectrum the data on metal thickness make it possible to estimate the effective skin-depth as well. The technique is tested by simulation and is applied to determine permeability of Fe-based films vacuum-sputtered on glassceramic and polymer substrates.

1. Bozorth, R. M., Ferromagnetism, IEEE Press, 1993.

2. Neudecker, I., G. Woltersdorf, B. Heinrich, T. Okuno, G. Gubbiotti, and C. H. Back, "Comparison of frequency, field and time domain ferromagnetic resonance methods," Journal of Magnetism and Magnetic Materials, Vol. 307, 148, 2006.
doi:10.1016/j.jmmm.2006.03.060 Google Scholar

3. Kalarickal, S. S., P. Krivosic, M. Wu, C. E. Patton, M. L. Shnider, P. Kabos, T. J. Silva, and J. P. Nibarger, "Ferromagnetic resonance linewidth in metallic thin films: Comparison of measurement methods," Journal of Applied Physics, Vol. 99, 093909, 2006.
doi:10.1063/1.2197087 Google Scholar

4. Starostenko, S. N., K. N. Rozanov, and A. V. Osipov, "A broadband method to measure magnetic spectra of thin films," Journal of Applied Physics, Vol. 103, 07E914, 2008.
doi:10.1063/1.2832861 Google Scholar

5. Getman, A., A. Sivov, N. S. Perov, I. T. Iakubov, K. N. Rozanov, I. A. Ryzhikov, and S. N. Starostenko, "Static and dynamic magnetic properties of Fe films," Journal of Magnetism and Magnetic Materials, Vol. 272-276, e909, 2004.
doi:10.1016/j.jmmm.2003.12.697 Google Scholar

6. Iakubov, I. T., A. N. Lagarkov, S. A. Maklakov, A. V. Osipov, D. A. Petrov, K. N. Rozanov, and I. A. Ryzhikov, "Laminates of multi-layered Fe films for microwave applications," Journal of Magnetism and Magnetic Materials, Vol. 316, e813, 2007.
doi:10.1016/j.jmmm.2007.03.108 Google Scholar

7. Starostenko, S. N. and K. N. Rozanov, "Resonantly enhanced strip-line technique to measure microwave permeability of thin films," Journal of Magnetism and Magnetic Materials, 2009. Google Scholar

8. Mason, S. J., "Feedback theory-some properties of signal flow graphs ," Proc. IRE, Vol. 41, 1144-1156, 1953.
doi:10.1109/JRPROC.1953.274449 Google Scholar

9. Rozanov, K. N., N. A. Simonov, and A. V. Osipov, "Microwave measurements of the magnetic film permeability," J. Comm. Technology and Electronics, Vol. 47, No. 2, 210-216, 2002. Google Scholar

10. Adenot, A. L., O. Acher, D. Pain, F. Duverger, M.-J. Malliavin, D. Damiani, and T. Taffary, "Broadband permeability measurement of ferromagnetic thin films or microwires by a coaxial line perturbation method," Journal of Applied Physics, Vol. 98, No. 9, 5965-5967, 2000.
doi:10.1063/1.372581 Google Scholar

11. Lagarkov, A. N., K. N. Rozanov, N. A. Simonov, and S. N. Starostenko, "Microwave permeability of thin films," Handbook of Advanced Magnetic Materials, Vol. 4, Springer, 2005. Google Scholar

12. Lofland, S. E., H. Garcia-Miquel, M. Vazquez, and S. M. Bhagat, "Microwave magnetoabsorption in glass-coated amorphous microwires with radii close to skin depth," Journal of Applied Physics, Vol. 92, No. 4, 2058-2063, 2002.
doi:10.1063/1.1494847 Google Scholar

13. Starostenko, S. N., K. N. Rozanov, and A. V. Osipov, "Microwave properties of composites with glass coated amorphous magnetic microwires," Journal of Magnetism and Magnetic Materials, Vol. 298, 56-64, 2006.
doi:10.1016/j.jmmm.2005.03.004 Google Scholar

14. Acher, O., J. L. Vermeulen, A. Lucas, P. Baclet, J. Kazanjoglou, and J. C. Peuzin, "Direct measurement of permeability up to 3 GHz of co-based alloys under tensile stress," Journal of Applied Physics, Vol. 73, No. 10, 6162-6164, 1993.
doi:10.1063/1.352736 Google Scholar

15. Iakubov, I. T., A. N. Lagarkov, S. A. Maklakov, A. V. Osipov, K. N. Rozanov, I. A. Ryzhikov, V. V. Samsonova, and A. O. Sboychakov, "Microwave and static magnetic properties of multi-layered iron-based films," Journal of Magnetism and Magnetic Materials, Vol. 321, 726-729, 2009.
doi:10.1016/j.jmmm.2008.11.036 Google Scholar

Dr. Sergey Nickolaevich Starostenko

Dr. Konstantin Rozanov