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Information × Registration Number 0214U005446, 0114U007227 , R & D reports Title Investigation of optical, structural and magnetic properties of new magnetic materials based on ZnO nanostructure doped with 3d transition metals popup.stage_title Head Avramenko Kateryna Andreevna, Registration Date 30-12-2014 Organization Institute of Semiconductor Physics of National Academy of Sciences of Ukrain popup.description2 As result of project fulfilment, the complex submicron investigations of the optical, structural and magnetic properties of ZnO nanostructures doped with metals, grown by different methods. It was ascertained that Zn1-хСохO films are ferromagnetic at room temperature and have a column-like microstructure. Complex optical studies have showed that the Co2+ ions are in the tetrahedral oxygen environment, i.e. they substitute Zn2+ ions in the regular positions of wurtzite structure. The inter-band electron transitions of CO2+ centers were observed for the first time in the low-temperature PL spectra of Zn1-xCoxO films. The SQUID studies showed that Zn0.85Co0.15O films are ferromagnetic at room temperature which is caused by indirect exchange interaction of isolated CO2+ ions as well as CO2+ ions in the cluster (Со О Со)n (n > 1) configurations. The temperature dependencies of the magnetic susceptibility of Zn0.85Co0.15O films, obtained under the magnetic field at 1000 E within the temperature range 2 - 300 K, showed the presence of substantial anisotropy in the magnetic properties. Product Description popup.authors Бойко М.І. Коломис О.Ф. Ніколенко А.С. Насєка В.М. Насєка В.М. Романюк А.С. Стубров Ю.Ю. popup.nrat_date 2020-04-02 Close