Аннотация:The parameters of the electron structure and the integrals of s-f and s-d exchange interactions are obtained by NMR and Mossbauer investigations of quasi-binary intermetallic compounds of the system Tb1-xZrxFe2. The compounds are obtained from initial metals of purity 99.99% by the method of electric-arc melting with a nondestructible tungsten electrode on a water-cooled copper base in an atmosphere of purified argon. After melting, the samples are subjected to homogenizing annealing in quartz vacuum ampules at 850°C for 180 hr. According to the data of X-ray structural analysis, substitutional alloys of terbium are obtained only with x = 0, 0.1, 0.2, 0.8, 0.9, and 1. These compounds have a cubic structure of the Laves phase C15, with axis of easy magnetization.