Low temperature NMR study of cadmium-substituted copper ferrite

NMR spectra of CdXCu1−xFe2O4 /0≤x≤0.30/ at liquid helium temperature have been obtained in the frequency range of 50 to 110 MHz using the spin-echo technique. Influence of substitution of Cu2+ ions by Cd2+ ions on effective magnetic fields at57Fe nuclei has been found only at octahedral sites.