Transport effects in La0.67-xRxSr0.33MnO3 (R = Eu, Gd) / Bebenin NG,Zainullina RI,Mashkautsan VV,Ustinov VV,Vasil'ev VG,Slobodin BV // PHYSICS OF THE SOLID STATE. - 2001. - V. 43, l. 3. - P. 501-507.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

An experimental study is reported on the temperature dependences of the magnetic susceptibility, electrical resistivity, magnetoresistance, thermo- and magnetothermopower, and on the Hall effect of the polycrystalline lanthanum manganites La0.67 - xRxSr0.33MnO3 (x = 0 and 0.07, R = Eu, Gd) within the 77- to 430-K temperature range. Replacement of a small amount of lanthanum by europium or gadolinium was found to result in a considerable decrease in the resistivity and in a change in the pattern of its temperature dependence. The temperature dependence of both the ordinary and anomalous Hall coefficients near the Curie temperature is shown to be determined by the change in the number of carriers in delocalized states. A method is proposed for separation of the hole and electronic contributions to thermopower in the ferromagnetic region. The conduction mechanisms are discussed in terms of the concept of mobility edge motion. (C) 2001 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

MAGNETORESISTANCE; MANGANITES; PEROVSKITES; CA

DOI:

10.1134/1.1356128

Web of Science ID:

ISI:000167367300019

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	AMER INST PHYSICS
Address	2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Language	English
Keywords-Plus	MAGNETORESISTANCE; MANGANITES; PEROVSKITES; CA
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Bebenin, Nikolay/K-6955-2013 Zainullina, Rimma/J-4287-2013 Ustinov, Vladimir/G-7501-2011
ORCID-Numbers	Bebenin, Nikolay/0000-0003-2035-6103 Zainullina, Rimma/0000-0002-0353-4775 Ustinov, Vladimir/0000-0002-5155-7947
Number-of-Cited-References	17
Usage-Count-Since-2013	2
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	409CQ