Search for: [Abstract = "The temperature dependence of intensity of EPR spectra of investigated samples, indicated existence of two components in these spectra. The one of them fulfils the Curie low and the paramagnetic centres have a spin S = \?. The second, corresponds to paramagnetic centres in thermally excited triplet states with S = 1. The scheme of structures of paramagnetic centres with spin S = 1 was made."]