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Information × Registration Number 0208U004030, 0106U008076 , R & D reports Title The investigation of size effects in nanosized oxides by radiospectroscopy methods popup.stage_title Head Glinchuk Maya Davidovna, Registration Date 07-02-2008 Organization I.N.Frantsevich Institute for Probmens of Materials Sciences Ukrainian Academy of Science popup.description2 Experimental and theoretical investigations of ferroelectric nanopowders based on BaTiO3 and ZrO2 were carried out by ESR method. Size effects for materials in ferroelectric tetrafonal phase at room temperature and in cubic paraelectric phases were theoretically studied. It was proposed the method for extracting of value of particle critical size from ratio of line intensities with different symmetries in absorption spectra. The samples of zirconium dioxide nanosized powders were investigated by radiospectroscopy methods. It is established that ESR signal changes are connected with changes of Cr ions charge state. So, an intensity of ESR signal І(Cr) is a detector of nanopours number in crystal lattice and on surface of nanopowders. It is shown that synthesis technology of material with maximum numbers of nanopours can be controled by ESR of Cr5+ ions. Product Description popup.authors popup.nrat_date 2020-04-02 Close