Effect of localized magnetic field on the uniform ferromagnetic resonance mode in a thin film

Obukhov, Yu.; Pelekhov, D. V.; Nazaretski, E.; Movshovich, R.; Hammel, P. C.
April 2009
Applied Physics Letters;4/27/2009, Vol. 94 Issue 17, p172508
Academic Journal
We theoretically analyze the influence of the micromagnetic probe used in ferromagnetic resonance force microscopy (FMRFM) on the ferromagnetic resonance (FMR) modes in a thin ferromagnetic film. Our analysis of the FMRFM force response reveals three regimes defined by the extent to which the probe perturbs the uniform FMR mode. With closer approach, the FMRFM force grows more slowly because the strengthening probe field suppresses the FMR response. Our analysis agrees well with experimental data and provides theoretical foundations for FMRFM imaging.


Related Articles

  • Exchange coupled bilayer thin films with tilted out-of-plane anisotropy easy axis. Layadi, A. // Journal of Applied Physics;Oct2012, Vol. 112 Issue 7, p073901 

    The ferromagnetic resonance (FMR) modes are worked out for the case of exchange coupled bilayer thin films where the anisotropy axis in the ferromagnetic film is tilted out of the plane. General formulas are obtained for the mode position, frequency and field linewidths, and intensity for an...

  • Detection of magnetite particles in coal by ferromagnetic resonance. Malhotra, V. M.; Graham, W. R. M. // Journal of Applied Physics;2/15/1985, Vol. 57 Issue 4, p1270 

    Focuses on the use of ferromagnetic resonance (FMR) for the detection of magnetite particles in coal. Details on the experiment; Result and discussion; Usefulness of FMR technique in the identification and physical and chemical characterization of ferro- and ferrimagnetic minerals in coals.

  • Strong asymmetry of microwave absorption by bilayer conducting ferromagnetic films in the microstrip-line based broadband ferromagnetic resonance. Kostylev, M. // Journal of Applied Physics;Aug2009, Vol. 106 Issue 4, p043903 

    Peculiarities of broadband ferromagnetic resonance response of conducting magnetic bilayer films have been studied theoretically. The film thickness was assumed to be smaller than the microwave magnetic skin depth. Excitation of magnetization precession by a homogeneous microwave field incident...

  • Measurements of exchange anisotropy in NiFe/NiO films with different techniques. Fermin, J. R.; Lucena, M. A.; Azevedo, A.; de Aguiar, F. M.; Rezende, S. M. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p6421 

    One of the puzzles of the recent investigations on the exchange anisotropy in ferromagnetic (FM)/antiferromagnetic (AF) bilayers is the fact that different techniques yield different values for the exchange field (H[sub E]) between the layers. We report an investigation on sputtered NiFe/NiO...

  • Macroscopic dynamic effects in an amorphous ferromagnet. Yan, Li; Bhagat, S. M.; Mazumdar, P.; Moorjani, K.; Kistenmacher, T. J. // Journal of Applied Physics;4/15/1985, Vol. 57 Issue 8, p3730 

    Provides information on a study that described magnetization and ferromagnetic resonance measurements on melt-spun amorphous ferromagnet ribbons. Methodology of the study; Results and discussion of the study.

  • Multiple ferromagnetic resonance in mesoscopic permalloy rings. Giesen, F.; Podbielski, J.; Korn, T.; Grundler, D. // Journal of Applied Physics;5/15/2005, Vol. 97 Issue 10, p104333 

    Using a broadband microwave spectrometer we have investigated the magnetization dynamics of mesoscopic ferromagnetic disks and rings in the frequency range from 45 MHz to 20 GHz. We studied permalloy rings with an outer diameter of 2 μm and different ring widths w. In the mesoscopic devices...

  • Precise probing spin wave mode frequencies in the vortex state of circular magnetic dots. Awad, A. A.; Guslienko, K. Y.; Sierra, J. F.; Kakazei, G. N.; Metlushko, V.; Aliev, F. G. // Applied Physics Letters;1/4/2010, Vol. 96 Issue 1, p012503 

    We report on detailed broadband ferromagnetic resonance measurements of azimuthal and radial spin wave excitations in circular Permalloy dots in the vortex ground state. Dots with aspect ratio (β=height over radius) varied from 0.03 to 0.1 were explored. The frequency splitting of two lowest...

  • Current-induced switching of magnetic vortex core in ferromagnetic elliptical disks. Yamada, Keisuke; Kasai, Shinya; Nakatani, Yoshinobu; Kobayashi, Kensuke; Ono, Teruo // Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p192508 

    We report the experimental observation and micromagnetics simulation of the current-induced switching of the magnetic vortex core in ferromagnetic elliptical disks. We found that the critical current density required for the core switching depends on the relative alignment between the current...

  • Ferromagnetic order in Ge1-xCrxTe. Fukuma, Y.; Asada, H.; Koyanagi, T. // Applied Physics Letters;1/16/2006, Vol. 88 Issue 3, p032507 

    The ferromagnetic properties of IV-VI diluted magnetic semiconductor Ge1-xCrxTe films prepared by sputtering are investigated. The ferromagnetism such as the spontaneous magnetization and the Curie temperature is significantly affected by the stoichiometry, while the ferromagnetism of Ge1-xMnxTe...


Read the Article


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

Try another library?
Sign out of this library

Other Topics