Abstract
A study about magnetostatic modes in a hollow sphere of inner radius r 1 and outer radius r 2 , is presented. The eigenfrequencies are represented as a function of r 1 / r 2 (the aspect ratio). Walker's solution for the sphere was recovered in the representation obtained by Plumier. The equations for hollow spheres correspond to the results obtained by micromagnetic simulation in these geometries. The results presented here are significant for future experimental investigations and technological applications. • Magnetostatic modes in a hollow sphere were determined. • The Plumier's solution was recovered at the limit where inner radius is zero. • Dispersion relations were showed for n = m and n = m + 1 .
Published Version
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