Theory of antiferromagnetic resonance
Webb18 nov. 2024 · The antiferromagnet is a closed Hermitian system, we find that its excitations, even in the absence of dissipation, can be viewed as a non-Hermitian system with dissipative coupling. Webb27 sep. 2024 · 1. Introduction. Theories of antiferromagnetic resonance were macroscopically treated in Refs. [1– 3], and were microscopically developed using the spin-wave method in Refs.[4– 10].The anti-ferromagnetic resonance was also discussed using the method of the collective motion of spins in Ref. [], and was studied numerically using …
Theory of antiferromagnetic resonance
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WebbUsing molecular field theory and a 2-sublattice model, the second-order susceptibility of an antiferromagnetic structure is derived. The resulting nonlinear electromagnetic wave … Webbmethod of ferromagnetic resonance is applicable to a wide range of magnetic samples from macroscopic samples to ultrathin layers with thicknesses in the ... in FMR theory. …
WebbFerromagnetic resonance1 describes the collective, res-onant excitation of magnetic moments in a ferromag-net and is a powerful tool to investigate a specimen’s magnetic … Webb24 juni 2004 · The reversal speed of the ferromagnet is determined by a precession of the ferromagnetic spins in the strong interfacial exchange field and does not require any other field. This principle could be...
WebbAntiferromagnetic resonance frequencies for a collinear structure can be calculated relatively easily in a two-sublattice model [10]. Similar calculations for a noncollinear magnets are much less general: many-sublattice model calculations using a mean-field theory approach are very cumbersome [11], standard (Holstein-Primakoff like) spin- WebbAntiferromagnetic resonance experiment was performed on a single crystal of CoCl 2 6H 2 O in the frequency range of 9.5 to 47 kMc/sec at liquid helium temperature. The result …
WebbTheory. The dependence of the resistivity on temperature , including the Kondo effect, is written as = + + +,where is the residual resistivity, the term shows the contribution from the Fermi liquid properties, and the term is …
WebbThe resonance conditions in ferro- and antiferromagnetic resonance absorptions are obtained by the spin-wave theory. According to the usual free spin-wave theory, the … dallas first party insurance attorneyWebb12 apr. 2024 · First, the excitation of resonance is spatially uniform over the sample. Second, studies are performed at a fixed frequency, which eliminates the effects of the matching of the RF line. The experiments were performed using a 6-μm-thick disk YIG film 0.3 mm in diameter at a frequency of 9.26 GHz and room temperature. birch hill ski area weatherWebb6 apr. 2016 · In a collinear antiferromagnet with easy-axis anisotropy, symmetry dictates that the spin wave modes must be doubly degenerate. Theses two modes, distinguished by their opposite polarization and... dallas first presbyterian day schoolWebbThe antiferromagnetic resonance spectrum of single-crystal Cr 2 O 3 has been mapped within the wavelength region from 12 mm to 2.8 mm and magnetic field intensities from 0 oersteds to 30 000 oersteds. The resonance frequencies were observed in this region in a temperature interval from about 17°C to 35°C, the Néel temperature, T N. dallas first church watch liveWebb27 okt. 2024 · Antiferromagnetic resonance modes at zero field In the following, we will focus our study on the dynamic characteristics of region-I. First, in the absence of … birch hills golf course saskatchewanWebbTranscript of Theory of Antiferromagnetic Resonance. LETTE RS TO THE E D I TOR 565. zo. I4Jg IO-DIFFERENTIAL MOMENTUMDISTRI8UTION OF STOPPED MESONS. I. PIIIIN. I … birch hill shops bracknellWebbFerromagnetic resonance, or FMR, is coupling between an electromagnetic wave and the magnetization of a medium through which it passes. This coupling induces a significant … dallas first presbyterian church