It is shown that the intensities and frequencies of the magnetostatic modes are essentially independent of explicit surface spin pinning. When surface spin pinning is included in the thin-film magnetostatic-mode eigenvalue problem, exchange must be included even when the exchange energy is negligible. The magnetization is changed drastically in general, but the intensities and frequencies are essentially the same as for the pure magnetostatic modes (exchange constant D = 0 and no explicit pinning mechanism). 8 pp. (LC)
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