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dc.contributor.author |
Prokhorov, V.G. |
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dc.contributor.author |
Flis, V.S. |
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dc.contributor.author |
Kaminsky, G.G. |
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dc.contributor.author |
Lee, Y.P. |
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dc.contributor.author |
Park, J.S. |
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dc.contributor.author |
Svetchnikov, V.L. |
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dc.date.accessioned |
2017-06-14T09:19:25Z |
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dc.date.available |
2017-06-14T09:19:25Z |
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dc.date.issued |
2005 |
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dc.identifier.citation |
Influence of structural disorder on magnetic and transport properties of (La₀.₇Sr₀.₃)₀.₅(Pr₀.₆₅Ca₀.₃₅)₀.₅MnO₃ films / V.G. Prokhorov, V.S. Flis, G.G. Kaminsky, Y.P. Lee, J.S. Park, V.L. Svetchnikov // Физика низких температур. — 2005. — Т. 31, № 2 — С. 213-221. — Бібліогр.: 35 назв. — англ. |
uk_UA |
dc.identifier.issn |
0132-6414 |
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dc.identifier.other |
PACS: 71.30.+h, 75.47.Gk, 75.47.Lx |
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dc.identifier.uri |
http://dspace.nbuv.gov.ua/handle/123456789/121394 |
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dc.description.abstract |
Magnetic and transport properties of (La₀.₇Sr₀.₃)₀.₅(Pr₀.₆₅Ca₀.₃₅)₀.₅MnO₃ films prepared by a
«co-deposition» utilizing the laser-ablation technique are investigated in a wide temperature
range. The film deposited at 300 °C has a nano-crystalline disordered structure and exhibits a paramagnetic
temperature dependence of the magnetization with a narrow peak (ΔT ≃ 10 K) at
TG ≃ 45 K, which can be interpreted as a paramagnetic → superparamagnetic transition.
A short-term annealing of the as-deposited film at 750 °C leads to the formation of a high-textured
polycrystalline microstructure and to the appearance of ferromagnetic (FM) and metal—insulator
(MI) transitions at TC ≃ 240 K and TP ≃ 140 K, respectively. The observed discrepancy between
TP and TC values can be ascribed to a percolating nature of the MI transition, with an exponent of
5.3 for the percolating conductivity. The film deposited at Tsub ≃ 740 °C is composed of the lattice
strain-free and the lattice-strained crystallites with different lattice parameters and TC‘s, and is
consistently described in the framework of the Millis model [A.J. Millis, T. Darling, and A. Migliori,
J. Appl. Phys. 83, 1588 (1998)]. For a single-phase crystalline film obtain TC ≃ 270 K and
TP ≃ 260 K. |
uk_UA |
dc.description.sponsorship |
This work was supported by the KOSEF through
the Quantum Photonic Science Research Center. |
uk_UA |
dc.language.iso |
en |
uk_UA |
dc.publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
uk_UA |
dc.relation.ispartof |
Физика низких температур |
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dc.subject |
Низкотемпеpатуpный магнетизм |
uk_UA |
dc.title |
Influence of structural disorder on magnetic and transport properties of (La₀.₇Sr₀.₃)₀.₅(Pr₀.₆₅Ca₀.₃₅)₀.₅MnO₃ films |
uk_UA |
dc.type |
Article |
uk_UA |
dc.status |
published earlier |
uk_UA |
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