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Information × Registration Number 0214U008195, 0113U002951 , R & D reports Title Nanostructured left-handed medium and magnetically elements millimeter devices and submillimeter ranges based on them: synthesis and properties of nanocrystalline samples popup.stage_title Head Belous Anatolii Grigorievich, Registration Date 18-11-2014 Organization V.I.Vernadskii Institute of General and Inorganic Chemistry NASU popup.description2 The processes that occur during the synthesis of nanoparticles of manganites La1-xSrxMnO3 (x = 0,1 - 0,5) sol-gel method from aqueous solutions at different pH values gels (pH = 2, 6, 9) and by deposition from nonaqueous solutions microemulsions . It is shown that the samples synthesized by sol-gel method only at pH = 9 after heat treatment at 800 ° C is weakly agglomerated and have a particle size of about 50 nm. Past studies of electrical resistivity and magnetoresistance on temperature for ferromagnetic materials La0.775Sr0.225MnO3, synthesized by sol-gel method at different pH values of the gel (1.5, 9). The magnetic properties (saturation magnetization, coercive force and temperature lock) on temperature for ferromagnetic materials La0.775Sr0.225MnO3 synthesized by sol-gel method at pH gel equal to 9. It is established that at room temperature the saturation magnetization data samples is 34.84 emu / g and blocking temperature is 300 K. The features of the synthesis of nanoparticles AFe2O4 (A - Mn, Fe, Co, Ni, Zn), by deposition of non-aqueous solutions of diethylene glycol and by deposition from solutions microemulsions. Using NMR spectroscopy established sequence of chemical reactions in the synthesis of nanoparticles AFe2O4. As a result of these electron microscopy showed that after synthesis at temperatures up to 200 ° C is the formation of crystalline weakly agglomerated particles having sizes less than 2.8 nm, depending on the method of synthesis. Product Description popup.authors Єленіч О.В. Білоус А.Г. В'юнов О.І. Соловйова К.Д. Солопан С.О. Ступін Ю.Д. Хоменко Б.С. popup.nrat_date 2020-04-02 Close