Electrical detection of microwave assisted magnetization switching in a Permalloy microstrip

Fan, Xiaolong; Gui, Y. S.; Wirthmann, A.; Williams, G.; Desheng Xue; Hu, C.-M.
August 2009
Applied Physics Letters;8/10/2009, Vol. 95 Issue 6, p062511
Academic Journal
Microwave assisted magnetization switching has been investigated in a nonelliptic Permalloy microstrip, using radio frequency magnetic fields h applied in-plane perpendicular to the long axis of the strip. In low power excitations, Hs decreases almost linearly with increasing h; this can be qualitatively understood by introducing an susceptibility χyy that links the dynamic magnetization inside the microstip to the h field outside the microstip. However, at high frequencies, Hs no longer decrease with increasing h when this latter field exceeds a critical value. We suppose such “saturation” effects could attribute to the nonlinear ferromagnetic resonance caused by high power excitations.


Related Articles

  • Characterization of microwave magnetic narrow band filters by ferromagnetic resonance. Bousbahi, Khaled; Marcelli, Romolo // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p5971 

    Ferromagnetic resonance cavity and microstrip excitation experiments have been performed on a straight edge yttrium iron garnet resonator. Both excitation systems have been modeled as band-stop configurations and a mapping from the swept bias magnetic field domain to the frequency domain has...

  • Impact of conducting nonmagnetic layers on the magnetization dynamics in thin-film magnetic nanostructures. Maksymov, Ivan S.; Kostylev, M. // Journal of Applied Physics;Jan2013, Vol. 113 Issue 4, p043927 

    Through rigorous numerical simulations with an improved finite-difference time-domain algorithm consistent with a linearized Landau-Lifshitz-Gilbert equation and Hoffmann interlayer exchange boundary conditions, we investigate theoretically broadband ferromagnetic resonance response of...

  • Numerical analysis on power loss mechanism of Fe55Al18O27 thin films for conduction noise through microstrip line. Ryu, Gi-Bong; Kim, Sung-Soo // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07A508 

    With a simulation model of microstrip line attached by Fe55Al18O27 thin film of high magnetic loss, S parameters and power absorption has been analyzed by finite element method in the frequency range of available material parameters (0.1–1.5 GHz). It is demonstrated that the S parameters...

  • Calculations of giant magnetoimpedance and of ferromagnetic resonance response are rigorously equivalent. Yelon, A.; Me´nard, D.; Britel, M.; Ciureanu, P. // Applied Physics Letters;11/11/1996, Vol. 69 Issue 20, p3084 

    It is simply demonstrated that the giant magnetoimpedance (GMI) response of a plate or ribbon is rigorously equivalent to the response of the same sample in ferromagnetic resonance (FMR) experiment. Thus, all of the solutions for FMR response behavior of metals may be applied to the description...

  • High attenuation tunable microwave notch filters utilizing ferromagnetic resonance. Cramer, N.; Lucic, D.; Camley, R. E.; Celinski, Z. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p6911 

    We have constructed a series of microstrips for transmission of microwaves. These microstrips incorporate ferromagnetic and dielectric layers and therefore absorb microwave energy at the ferromagnetic resonance (FMR) frequency. The absorption notch in transmission can be tuned to various...

  • Magnetization pinning in conducting films demonstrated using broadband ferromagnetic resonance. Kostylev, M.; Stashkevich, A. A.; Adeyeye, A. O.; Shakespeare, C.; Kostylev, N.; Ross, N.; Kennewell, K.; Magaraggia, R.; Roussigné, Y.; Stamps, R. L. // Journal of Applied Physics;Nov2010, Vol. 108 Issue 10, p103914 

    The broadband microstrip ferromagnetic resonance (FMR), cavity FMR, and Brillouin light scattering spectroscopy techniques have been applied for detection and characterization of a magnetic inhomogeneity in a film sample. In the case of a 100 nm thick permalloy film, an additional magnetically...

  • Apparent sixfold configurational anisotropy and spatial confinement of ferromagnetic resonances in hexagonal magnetic antidot lattices. Krivoruchko, V. N.; Marchenko, A. I. // Journal of Applied Physics;Apr2011, Vol. 109 Issue 8, p083912 

    The static and dynamic properties of hexagonal lattices of magnetic antidots have been studied using micromagnetic simulations and semianalytical modeling. The theoretical model is based on the Landau-Lifshitz equation and is developed for the case of comparable magnitudes of the field and...

  • Thermally excited ferromagnetic resonance as diagnostic tool for spin valve heads. Zhou, Yuchen; Zhu, Jian-Gang; Kim, Nayoung // Journal of Applied Physics;5/15/2003, Vol. 93 Issue 10, p8579 

    Thermally excited ferromagnetic resonance (TEFMR) in a spin valve head gives rise to mag-noise while its power spectral density directly reflects the magnetic field distribution in the sensing layer as well as the corresponding micromagnetic states. In this article, we report an experimental...

  • Width of the Ferromagnetic Resonance Line in an Anisotropic Magnet in Misoriented Resonance and Scanning Magnetic Fields. Shvachko, Yu. N.; Starichenko, D. V.; Shmatov, G. A.; Gobov, Yu. V. // Physics of the Solid State;Nov2002, Vol. 44 Issue 11, p2124 

    The dependence of the width δHβ of the ferromagnetic resonance (FMR) line in anisotropic magnets on the angle of misorientation β between the static (resonance) and scanning magnetic fields was investigated both experimentally and theoretically. The change in the linewidth is due to the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics