نتایج جستجو برای: nutation
تعداد نتایج: 487 فیلتر نتایج به سال:
The effect of inertial spin dynamics is compared between ferromagnetic, antiferromagnetic and ferrimagnetic systems. linear response to an oscillating external magnetic field calculated within the framework Landau--Lifshitz--Gilbert equation using analytical theory computer simulations. Precession nutation resonance peaks are identified, it demonstrated that precession frequencies reduced by in...
Factors affecting the performance of 1 H heteronuclear decoupling sequences for magic-angle spinning (MAS) NMR spectroscopy of organic solids are explored, as observed by time constants for the decay of nuclear magnetisation under a spin-echo (T2' ). By using a common protocol over a wide range of experimental conditions, including very high magnetic fields and very high radio-frequency (RF) nu...
We analyze dispersion relations of magnons in ferromagnetic nanostructures with uniaxial anisotropy taking into account inertial terms, i.e. magnetic nutation. Inertial effects are parametrized by damping-independent parameter $\beta$, which allows for an unambiguous discrimination from Gilbert damping $\alpha$. The analysis magnon relation shows its two branches modified the effect, albeit dif...
Because of their importance in the accurate modeling of the Earth’s orientation in space, some non-negligible predictable effects on precession-nutation are investigated. This paper considers the coupling effects between the axial and the equatorial components of the Earth’s rotation vector in the dynamical equations, and the effects of the second order lunisolar torque due to the Earth’s zonal...
Context. The tidal potential generated by bodies in the solar system contains Poisson terms, i.e., periodic terms with linearly timedependent amplitudes. The influence of these terms on the Earth’s rotation, although expected to be small, is of interest for high accuracy modeling. Aims. Therefore, we study their contribution to the rotation of a non-rigid Earth with an elastic mantle and liquid...
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