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Information × Registration Number 0211U008047, 0109U005662 , R & D reports Title The investigation of surface intrinsic and impurity defects and their influence on electro-physical parameters of ferroelectric films popup.stage_title Head Bykov Igor Pavlovich, Registration Date 18-03-2011 Organization I.N.Frantsevich Institute for Probmens of Materials Sciences Ukrainian Academy of Science popup.description2 Phenomenological theory of multi-axis ferroelectric films with three components of order parameter (polarization) was developed, in which terms it was taken into account misfit dislocations between film and substrate, appearance of misfit dislocations in films with thickness larger than critical one, surface piezoelectric effect, induced by symmetry breaking on the film surface, and depolarization field. Zn1-xMnxO thin films with very low level of manganese doping (< 0.4 %) were investigated. Films were prepared by using atmospheric barrier-torch discharge. EPR measurement in temperature range 4.2-300 K showed that a texture is more clearly defined in the films with low Mn concentration. Thanks to the combination of core-shell architecture and Spark Plasma Sintering an efficient way to control and stabilize oxygen-deficiency-related defects in BT-based ceramics was demonstrated. A close link between the macroscopic dielectric relaxation and the microscopic dynamics of charged defects was clearly evidenced. Product Description popup.authors Єлісєєв Євген Анатолійович Глинчук Майя Давидівна Кондакова Ірина Василівна Лагута Валентин Володимирович Порохонський Віктор Іванович Щербина Олег Іванович Юрченко Леся Петрівна popup.nrat_date 2020-04-02 Close