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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2009, Volume 89, Issue 7, Pages 375–380
(Mi jetpl393)
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This article is cited in 9 scientific papers (total in 9 papers)
CONDENSED MATTER
Positive magnetoresistance effect in rare earth cobaltites
I. O. Troyanchuka, M. V. Bushinskya, D. V. Karpinskya, V. M. Dobryanskiib, V. V. Sikolenkoc, A. M. Balagurovc a Scientific-Practical Materials Research Centre of NAS of Belarus
b Belarusian State Pedagogical University
c Joint Institute for Nuclear Research
Abstract:
The structure, magnetic, and magnetotransport properties of the Pr0.5Sr0.5Co1 − x Fe x O3 system have been studied. The ferromagnet-spin glass (x = 0.5)-G-type antiferromagnet (x = 0.7) transitions and the metal—insulator transitions (x = 0.25) have been revealed. It has been established that the magnetoresistance of the metallic ferromagnetic cobaltites changes sign from positive to negative as the external magnetic field increases. The positive component increases and the negative component decreases with decreasing temperature. The negative magnetoresistance increases sharply in the insulating spinglass phase. Possible causes of the low-magnetic-field positive magnetoresistance in the rare earth metallic cobaltites are discussed.
Received: 11.02.2009
Citation:
I. O. Troyanchuk, M. V. Bushinsky, D. V. Karpinsky, V. M. Dobryanskii, V. V. Sikolenko, A. M. Balagurov, “Positive magnetoresistance effect in rare earth cobaltites”, Pis'ma v Zh. Èksper. Teoret. Fiz., 89:7 (2009), 375–380; JETP Letters, 89:7 (2009), 319–323
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https://www.mathnet.ru/eng/jetpl393 https://www.mathnet.ru/eng/jetpl/v89/i7/p375
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Abstract page: | 486 | Full-text PDF : | 140 | References: | 40 |
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