Oxygen-deficiency-activated phase transition in a long-aged La 0.8Ca0.2MnO3 film

V. G. Prokhorov; G. G. Kaminsky; V. A. Komashko; Y. P. Lee; J. S. Park; H. C. Ri

doi:10.1063/1.1470244

Oxygen-deficiency-activated phase transition in a long-aged La _0.8Ca_0.2MnO₃ film

V. G. Prokhorov
, G. G. Kaminsky
, V. A. Komashko
, Y. P. Lee
, J. S. Park
, H. C. Ri

Department of Physics

NASU - Kurdyumov Institute for Metal Physics
Hanyang University

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The magnetic and transport properties of as-deposited and long-aged La _0.8Ca_0.2MnO_3-δ films have been investigated in a wide temperature range. The x-ray diffraction data have shown separation of the film into two crystalline phases of the cubic and rhombohedral symmetry with different oxygen contents of δ≃0.08 and 0.16, respectively, after a half-year aging at room temperature in air. Both phases testify two different electronic (metal-insulator) and magnetic transitions with similar maximum values of magnetoresistance. The possible mechanism for such a type of structural transition in the aged manganite thin films is discussed.

Original language	English
Pages (from-to)	2707-2709
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	15
DOIs	https://doi.org/10.1063/1.1470244
State	Published - 15 Apr 2002

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abstract = "The magnetic and transport properties of as-deposited and long-aged La 0.8Ca0.2MnO3-δ films have been investigated in a wide temperature range. The x-ray diffraction data have shown separation of the film into two crystalline phases of the cubic and rhombohedral symmetry with different oxygen contents of δ≃0.08 and 0.16, respectively, after a half-year aging at room temperature in air. Both phases testify two different electronic (metal-insulator) and magnetic transitions with similar maximum values of magnetoresistance. The possible mechanism for such a type of structural transition in the aged manganite thin films is discussed.",

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AU - Prokhorov, V. G.

AU - Kaminsky, G. G.

AU - Komashko, V. A.

AU - Lee, Y. P.

AU - Park, J. S.

AU - Ri, H. C.

PY - 2002/4/15

Y1 - 2002/4/15

N2 - The magnetic and transport properties of as-deposited and long-aged La 0.8Ca0.2MnO3-δ films have been investigated in a wide temperature range. The x-ray diffraction data have shown separation of the film into two crystalline phases of the cubic and rhombohedral symmetry with different oxygen contents of δ≃0.08 and 0.16, respectively, after a half-year aging at room temperature in air. Both phases testify two different electronic (metal-insulator) and magnetic transitions with similar maximum values of magnetoresistance. The possible mechanism for such a type of structural transition in the aged manganite thin films is discussed.

AB - The magnetic and transport properties of as-deposited and long-aged La 0.8Ca0.2MnO3-δ films have been investigated in a wide temperature range. The x-ray diffraction data have shown separation of the film into two crystalline phases of the cubic and rhombohedral symmetry with different oxygen contents of δ≃0.08 and 0.16, respectively, after a half-year aging at room temperature in air. Both phases testify two different electronic (metal-insulator) and magnetic transitions with similar maximum values of magnetoresistance. The possible mechanism for such a type of structural transition in the aged manganite thin films is discussed.

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IS - 15

ER -

Oxygen-deficiency-activated phase transition in a long-aged La _0.8Ca_0.2MnO₃ film

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