Registration Number
0214U000108,
0112U002944
, R & D reports
Title
The study of spin state transitions in strongly correlated electron systems of transition metal compounds
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Head
Pashkevich Yurii Georgiyovich, Доктор фізико-математичних наук
Registration Date
16-01-2014
Organization
Donetsk Institute of Physics @ Engineering named after O.O.Galkin NAS of Ukraine
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The electronic and magnetic properties of cobaltite GdCoO3 were investigated experimentally and theoretically. It was studied the influence of pressure and temperature on the exchange shift effect in cobaltite La0.9Ba0.1CoO3, phase separated manganites CaMn1-xRuxO3 and nanostructured Sm0.27Ca0.73MnO3. It was shown that the external pressure is an effective tool for managing exchange bias and coercivity in Ru doped perovskites CaMnO3 thanks to the valence and spin modifications mechanism. In the framework of the modified crystal field theory the spin state changes of iron ions under the influence of unrestricted distortion of the tetrahedral complex were studied. Anomalous distribution topology of the iron ion spin states was adjudicated, which explains the phase transition "superconductor-metal-superconductor" under pressure in superconducting iron selenides MxFeySe2 (M = Rb, Cs).
Product Description
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І. М. Фіта
В. П. Гнезділов
К. В. Ламонова
О. А. Гусєв
О. В. Горностаєва
О. С. Житлухіна
Р. Ю. Бабкін
С. М. Орел
Т. М. Шевцова
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2020-04-02
