Journal ArticleDOI
Spin-wave quantization and dynamic coupling in micron-size circular magnetic dots
J. Jorzick,Sergej O. Demokritov,Burkard Hillebrands,Bernard Bartenlian,Claude Chappert,Dominique Decanini,F. Rousseaux,Edmond Cambril +7 more
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In this article, the Brillouin light-scattering spectroscopy was used for spin-wave quantization in square arrays of micron-size circular magnetic Ni80Fe20 dots.Abstract:
We report on the observation of spin-wave quantization in square arrays of micron-size circular magnetic Ni80Fe20 dots by means of Brillouin light-scattering spectroscopy. For a large wave-vector interval several discrete, dispersionless modes with a frequency splitting of up to 2.5 GHz were observed. The modes are identified as magnetostatic surface spin waves laterally quantized due to in-plane confinement in each single dot. The frequencies of the lowest observed modes decrease with increasing distance between the dots, thus indicating an essential dynamic magnetic dipole interaction between the dots at small interdot distances.read more
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Ordered magnetic nanostructures: fabrication and properties
TL;DR: The fabrication methods and physical properties of ordered magnetic nanostructures with dimensions on the submicron to nanometer scale are reviewed in this article, where various types of nanofabrication techniques are described, and their capabilities and limitations in achieving magnetic nano-structures are discussed.
Journal ArticleDOI
Brillouin light scattering studies of confined spin waves: linear and nonlinear confinement
TL;DR: In this article, a review is devoted to both the experimental and theoretical aspects of lateral converse effects observed for spin waves, with the wave vector in the 10-10 cm range, where the magnetic dipole interaction plays the most important role.
Journal ArticleDOI
Brillouin light scattering studies of planar metallic magnonic crystals
Gianluca Gubbiotti,Silvia Tacchi,Marco Madami,Giovanni Carlotti,A. O. Adeyeye,Mikhail Kostylev +5 more
TL;DR: The application of Brillouin light scattering to the study of the spin-wave spectrum of one and two-dimensional planar magnonic crystals consisting of arrays of interacting stripes, dots and antidots is reviewed in this paper.
Journal ArticleDOI
Spin-waves in cylindrical magnetic dot arrays with in-plane magnetization
K. Yu. Guslienko,Andrei Slavin +1 more
TL;DR: In this paper, the spectrum of dipole exchange spin-wave modes of a tangentially magnetized cylindrical magnetic dot is calculated from the solution of the Landau-Lifshitz equation and the magnetostatic Maxwell equations.
Journal ArticleDOI
Effect of interdot coupling on spin-wave modes in nanoparticle arrays
TL;DR: In this paper, a theory for the determination of the collective spin-wave modes of regular arrays of magnetic particles, taking into account the dipolar interaction among particles, was developed, and the frequencies and profiles of the spin modes of arrays of permalloy cylindrical particles with different interparticle separation were calculated with a numerical implementation of this model, using a three-dimensional representation of the magnetic particles in their actual nonuniform fundamental state.
References
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Journal Article
On the Theory of Ferromagnetic Resonance Absorption
TL;DR: The theory of ferromagnetic resonance absorption was extended in this paper to include the effect of the shape of the specimen and, in the case of a single crystal, of crystal orientation.
Journal ArticleDOI
Magnetostatic modes of a ferromagnet slab
R.W. Damon,J.R. Eshbach +1 more
TL;DR: In this paper, a thin slab magnetized in its plane is obtained in the magnetostatic limit and the mode distribution in wave-vector space is obtained for both the volume and surface modes, and the dependence of mode density on wavelength is discussed.
Journal ArticleDOI
On the Theory of Ferromagnetic Resonance Absorption
TL;DR: The theory of ferromagnetic resonance absorption was extended in this paper to include the effect of the shape of the specimen and, in the case of a single crystal, of crystal orientation.
Journal ArticleDOI
Exchange-biased magnetic tunnel junctions and application to nonvolatile magnetic random access memory (invited)
Stuart S. P. Parkin,Kevin P. Roche,Mahesh G. Samant,P. M. Rice,Robert Beyers,Roy Edwin Scheuerlein,Eugene J. O'Sullivan,Stephen L. Brown,J. Bucchigano,D. W. Abraham,Yu Lu,M. Rooks,Philip L. Trouilloud,R. A. Wanner,William J. Gallagher +14 more
TL;DR: In this paper, exchange biased magnetic tunnel junction (MTJ) structures are shown to have useful properties for forming magnetic memory storage elements in a novel cross-point architecture, which exhibit very large magnetoresistive (MR) values exceeding 40% at room temperature, with specific resistance values ranging down to as little as ∼60 Ω(μm)2.
Journal ArticleDOI
Magnetostatic Modes in Ferromagnetic Resonance
TL;DR: In this paper, the authors examined the mode spectrum of spheroids for the case, which may often hold in practice, where exchange and electromagnetic propagation can be ignored simultaneously, where the spheroid was found to have longwavelength modes of oscillation of the ferromagnetic sample.