Митберг Эдуард Борисович
DATE OF BIRTH: 26/12/1966
EDUCATION: Ural State Technical University (Ural Politechnical Institute), Physical-Technical Department, Yekaterinburg, 1992
EMPLOYMENT: 1984-1992 Student of Ural Politechnical Institute
1992-1993 Engineer of the Physical Chemistry Group, Institute of Solid State Chemistry of Ural Branch of Russian Academy of Sciences /ISSC/
1993-1995 Junior research fellow, Laboratory of Physical Methods of Investigation of Solids, ISSC
1995-present Post-graduate student, Laboratory of Physical Methods of Investigation of Solids, ISSC
RESEARCH INTERESTS: Synthesis, defect structure, thermodynamics, transport phenomena in oxide solids

SCIENTIFIC WORK
The studying of thermodynamic properties of complex oxides aimed to understanding the underlying defect chemistry is a basic field of my research interests. As a student I mastered isothermal calorimetry with making use of a double Calvet microcalorimeter, DSC and TG techniques of thermal analysis and resistivity measurements. Direct calorimetric measurements enabled me to determine the partial molar enthalpy change in the red-ox exchange reaction between the YBCO superconductor and gas phase, and to find out the enthalpy dependence on temperature and oxygen content in the superconductor. I described the respective results in my master thesis work. Currently I have a position of a post-graduate student in the Institute of Solid State Chemistry. The title of the research is “High-temperature thermodynamics and transport properties of layered perovskites based on YBa2Cu3O6+d ”. The doped derivatives are of special interest for applications as electrode and membrane materials because of their high level of both oxygen ion and electron conductivity. Moreover, the homogeneous range of oxygen is particularly wide which makes these materials more suitable for the experimental studying. In the course of the research I studied the single-phase fields for the solid solutions YBa2Cu3-xFexO6+d, YBa2Cu3-xZnxO6+d, YBa2Cu3-xNixO6+d, YBa2Cu3-xCoxO6+d by means of X-ray and neutron powder diffraction. The coulometric titration and TG measurements were used to determine the oxygen content in the specimens depending on temperature and oxygen pressure in the ambient. These thermodynamic data were rationalized in the frames of the so-called P-T-d diagrams. The intercalated oxygen partial enthalpy and entropy were then extracted from the diagrams, and their dependence on the doping level and oxygen content was clarified. The using of the data more ample and complete than in literature enabled me also to determine more exactly borders of the oxygen defect ordering. The particular decrease of both enthalpy and entropy at small oxygen content in the solid solutions was explained to be a result of vacancies appearing the O4 structural positions at exhaustion of the basal plane positions O1 and O5. The thermodynamic studying of the YBa2Cu3-xCoxO6+d solid solution is now in progress. The other objects of the research are oxides Sr1-xLnxCuO2 and AlSr2LnCu2O7-d. Owing to the peculiarities of their crystalline structure these compounds are particularly suitable for better understanding of the superconductivity phenomenon. The thermodynamic studying of SrCuO2 and NdCuO2 was used to develop a novel method for the synthesis of the bulk samples of Sr1-x(Nd,Pr)xCuO2.

RECENT PUBLICATIONS   [1]  [2]  [3]  [4]  [5]  [6]  [7]  [8]  [9]  [10]

E-mail: mitberg@imp.uran.ru

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