Search academic texts

Information × Registration Number 0211U002362, 0108U001591 , R & D reports Title The studies on the structure of surface nanopattern of irradiated oxides and the crystal-chemical characteristics of perovskites with superhigh dielectric susceptibility. popup.stage_title Head Melnichuk Igor, Registration Date 03-02-2011 Organization Donetsk National University popup.description2 A software for simulating the pattern formation by a cascade mechanism with diffuse relaxation of density has been developed. It has been shown that a ripple pattern is not formed in simulation of irradiation by low-energy ions without a target modification in the bulk, but it is formed in a simulation with diffuse relaxation of the density. The experiments have revealed that an additional contribution of a non-cascade mechanism of pattern formation due to the loss of oxygen, in particular, by a thermal mechanism, is possible at low grazing angles. Patterns obtained on the surfaces of the oxides and the materials with low sublimation energy as well, are the fractal ones with a fractal dimension from 2.3 to 2.45. It has been shown that the copper can substitute up to 3-4 mol. % of calcium in icosahedrally coordinated positions of a CCTO structure with reduction of lattice dimensions. It has been found that such substitution leads to the degradation of dielectric properties of the materials. Product Description popup.authors Cтаршинов Ілля Миколайович Богомолов Анатолій Григорович Губарев Андрій Анатолійович Капшуков Роман Анатолійович Лобода Тетяна Іванівна Мельничук Ігор Олександрович popup.nrat_date 2020-04-02 Close