Аннотация:The magnetic properties of the ferroliquids, consisting of the ultrasmall particles CoxZn1-xFe2O4 (x = 0.7, d = 10.2 nm; x = 0.5, d = 7.2 nm; x 0.3, d = 5.2 nm), dispersed in the Isopar-M as in the liquid-carrier and coated with the oleic acid, are studied through the Moessbauer spectroscopy method. The Co and Zn ions distribution in the A and B sublattices of the spinel structure is determined. The temperature values of locking the supermagnetic transitions Tb are determined by comparison of the Moessbauer subspectra areas, related to the paramagnetic and ferromagnetic fractions. It is established, that for the particles with the dimension of 10.2 nm the Tb = 400K, for the 7.2 nm particles - 183 K and for the 5.2 nm particles - 83 K