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Information × Registration Number 0215U008317, 0115U007185 , R & D reports Title Novel nanostructures for security applications popup.stage_title Head Strelchuk Viktor Vasylyovych, Доктор фізико-математичних наук Registration Date 24-12-2015 Organization Institute of Semiconductor Physics of National Academy of Sciences of Ukrain popup.description2 The effect of Mn doping on structural, morphological, optical and magnetic properties of ZnO:Mn nanowires, grown by hydrothermal chemical synthesis, is investigated. The nanowires are shown to have hexagonal facets with lateral size increasing with Mn content. The decrease of nanowires' band gap with increase of Mn concentration is found. The considerable modification of the vibrational properties of the ZnO matrix by Mn doping is shown. Coexistence of secondary phase of cubic spinel ZnMn2O4 is found at high concentrations of Mn. Obtained clear contrast in magnetic-force images of ZnO:Mn nanowires indicates ferromagnetism at room temperature. Density of vibrational states of hexagonal Co-doped ZnO is theoretically calculated. The presence of Co in ZnO leads to appearance of additional vibrational modes with frequencies depending on the relative positions of Co atoms. Magnetic structure of Co3O4/ZnO interface is theoretically calculated, and formation of the magnetic layer on the interface is found. Product Description popup.authors Бойко М.І. Коломис О.Ф. Купчак І.Б. Литвин П.М. Ніколенко А.С. Насєка В.М. Насєка Ю.М Стубров Ю.Ю. Циканюк popup.nrat_date 2020-04-02 Close