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Precision continuous-wave NMR measurements have been carried out over theentire magnetization curve of EuO and are presented in tabular form. Two veryclosely spaced resonances are observed and are attributed to domain anddomain-wall signals. Both of the signals are useful for analysis in thespin-wave region. Only the domain signal is measurable above ~50K. The latteris used for fitting Tc and the critical exponent beta. The critical-region fitsagree with previous measurements, within experimental error. Thelow-temperature data exhibit a clear-cut T^2 behavior, at variance with theexpectations of conventional spin-wave theory. This result is discussed inrelation to two semi-empirical spin-wave schemes, one formulated by N.Bykovetz, and one by U. Koebler. The NMR signal at 4.2K gives no indication ofa quadrupole splitting, in contradiction to the interpretation of severalprevious spin-echo NMR spectra observed in EuO. This issue remains unresolved.

NMR Measurements of Power-Law Behavior in the Spin-Wave and Critical Regions of Ferromagnetic EuO