Magnetic and transport properties of La₀.₇Sr₀.₃MnO₃/Pr₀.₆₅Ca₀.₃₅MnO₃ multilayered films with different microstructure

Magnetic and transport properties of La₀.₇Sr₀.₃MnO₃/Pr₀.₆₅Ca₀.₃₅MnO₃ multilayered films with different microstructure

Prokhorov, V.G. ; Flis, V.S. ; Kaminsky, G.G. ; Lee, Y.P.

Тема: Низкотемпеpатуpный магнетизм

Інший ID: PACS: 71.30.+ h, 75.47.Gk, 75.47.Lx

URI: http://dspace.nbuv.gov.ua/handle/123456789/119737

Посилання: Magnetic and transport properties of La₀.₇Sr₀.₃MnO₃/Pr₀.₆₅Ca₀.₃₅MnO₃ multilayered films with different microstructure / V.G. Prokhorov, V.S. Flis, G.G. Kaminsky, Y.P. Lee // Физика низких температур. — 2004. — Т. 30, № 6. — С. 619-625. — Бібліогр.: 30 назв. — англ.

Підтримка: This work was supported by the KOSEF through the Quantum Photonic Science Research Center.

Дата: 2004

Завантажень: 650

Magnetic and transport properties of La₀.₇Sr₀.₃MnO₃/Pr₀.₆₅Ca₀.₃₅MnO₃ multilayered films with different microstructure

Анотація:

The magnetic and transport properties of single-crystal and polycrystalline La₀.₇Sr₀.₃MnO₃/Pr₀.₆₅Ca₀.₃₅MnO₃ multilayered films are investigated in the temperature range 4.2–300 K. It is shown that the transformation from an incoherent to a coherent interface between layers leads to an enhancement of the ferromagnetic coupling, which is accompanied by a modification in the temperature dependence of the resistance and by a grown negative magnetoresistance ratio at room temperature. The influence of grain boundaries on the transport of carriers in the multilayered films is discussed on the basis of modern theoretical approaches.

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