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2011

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том 9 / 

выпуск 1

 



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А. И. Товстолыткин, А. Н. Погорелый, Д. И. Подъяловский, Т. И. Полек, Т. Н. Тарасенко*, В. И. Каменев*, О. Ф. Демиденко**, Г. И. Маковецкий**, К. И. Янушкевич**
«Особенности смешанных магнитных состояний в об-разцах системы (La,Bi)MnO3??.»
115–128 (2011)

PACS numbers: 61.05.cp, 61.05.Qr, 61.72.Hh, 75.30.Kz, 75.47.Gk, 75.47.Lx, 76.30.-v

Electrical, magnetoresistive, and resonance properties of La1?xBixMnO3?? (x???0–0.6) polycrystalline samples are studied. As revealed, the increase in bismuth content results in the growth of the parameters of elementary unit cell, the increase in electrical resistivity, and the decrease in the temperature of ferromagnetic-phase nucleation (TC). As shown, the phase transition between paramagnetic and ferromagnetic phases oc-curs by means of a smooth redistribution of the volumes of para- and ferromagnetic regions over a wide temperature range. As demonstrated, the temperature region of the coexistence of two phases calculated in the units of TC widens with the x growth. As revealed, magnetic field has an especially strong effect on the electrical conductivity of the material within the region of a mixed state.

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