Several kinds of aminoxyl radicals and their metal ion complexes

Recent results of magnetization, magnetic susceptibility and muon spin rota tion/relaxation (mu SR) measurements of some organic neutral radicals based on aminoxyl and their anion radical complexes with all;ali and transition metal cations are reported. Ferromagnetic intermolecular interactions, coex istent with antiferromagnetic ones, in several carboxyaryl nitronyl nitroxi de radicals are affected by inserting alkali metal ions, while the incorpor ation of transition metal ions result in complex behavior suggesting in par t ferromagnetic interactions. Temperature dependence of spontaneous magneti zation of TANOL suberate in the ordered state, obtained through the results of mu SR measurements, is characteristic of a two-dimensional magnetic lat tice, consistent with that of magnetic susceptibility above the ordering te mperature.