Abstract
The magnetic and zero field spin echo NMR investigations for Nd 2Co 14B and Y 2Co 14B compounds are reported and discussed. The anisotropy field and anisotropy constant K 1 derived from the experimental data for Nd 2Co 14B are strongly temperature dependant. In Nd 2Co 14B the easy direction of magnetisation deflects up to 26° from the c axis in the temperature range from about 130 K down to 4.2 K. The 59Co NMR spectra taken at 4.2 K consist of very narrow resonance lines, well resolved, of domain wall origin for Nd 2Co 14B. The resonance lines were attributed to Co structural positions. The very short relaxation times T 2 were observed with quadrupole oscillations of the spin echo decays for some lines.
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