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Information × Registration Number 0213U001164, 0112U004673 , R & D reports Title Point lattice defects in electrolytes of solid-oxide fuel cells and oxide cathode materials popup.stage_title Head Bykov Igor Pavlovich, Registration Date 21-01-2013 Organization I.N.Frantsevich Institute for Probmens of Materials Sciences Ukrainian Academy of Science popup.description2 ZrO2 nanosized powders with different dopants content were investigated by electron paramagnetic resonance. Main attention was paid to EPR signals from Zr3+ ions, Cr5+ ions as well as signals of polarons localized on nanoparticles surface. The principles of annealing influence on these ions EPR signals are established. Effect of oxigen vacancies, dopants diffusion, and phase transitions in ZrO2 on EPR characteristics of Zr3+ and Cr5+ ions is analized. Effect concerned to yttrium influence on internal mechanical stress in zirconium dioxide structure has been discovered. It is shown that Cr5+ ions can be used for obtaining information about mechanical stress in zirconium dioxide structure. It is shown, that X-ray irradiation leads to oxidation of chromium ions. The formation mechanisms of paramagnetic centers are proposed. Product Description popup.authors Порохонський Віктор Іванович Юрченко Леся Петрівна popup.nrat_date 2020-04-02 Close