Utoplov A.A.
1, Prutsakova N. V.
2, Chebanova E. V.
2, Nazarenko A. V.
3, Rudskaya A. G.
1, Letovaltsev A. O.
1, Kabirov Yu. V.
11Southern Federal University, Rostov-on-Don, Russia
2Don State Technical University, Rostov-on-Don, Russia
3Federal Research Center Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russia
Email: an.ut1@yandex.ru, shpilevay@mail.ru, starphish@yandex.ru, avnazarenko1@yandex.ru, arudskaya@yandex.ru, micio1@mail.ru, salv62@mail.ru
Magnetoresistive properties of ceramic composites based on ferromagnet La0.7Sr0.3MnO3 and oxides of nickel and titanium with different ratios of components were studied. Two methods were used to prepare the composites: calcination of La0.7Sr0.3MnO3 compositions mixed with dispersed titanium and nickel powders, and La0.7Sr0.3MnO3 mixed with oxides of these metals at a temperature of 1150 oC. For the compositions 98% La0.7Sr0.3MnO3 /2% TiO2 and 88% La0.7Sr0.3MnO3 /12% NiO (mass%) the negative magnetoresistivity reaches 7.5 Keywords: ferromagnet, oxides, manganite, composite, spin-dependent tunneling, negative magnetoresistance.
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