NMR spectra on Fe-57 nuclei in YIG containing Ga3+(d) and Y3+(a) impurities
were measured in the wide temperature region 4.2-370 K in zero external ma
gnetic held. The temperature dependence of satellite lines caused by Y3+ (a
) and Ga3+(d) impurities was determined. Experimental results are compared
with the theoretical calculation, based on the molecular held approximation
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