Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films

Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films

The magnetic and the transport properties of La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films with different thickness, prepared by rf-magnetron sputtering by using the so-called «soft» (or powder) target on LaAlO₃ substrate, have been investigated. The electron-diffraction and the high-resolution elect...

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Veröffentlicht in:Физика низких температур
Datum:2006
Hauptverfasser: Prokhorov, V.G., Komashko, V.A., Kaminsky, G.G., Lee, Y.P., Park, S.Y., Hyun, Y.H., Svetchnikov, V.L., Kim, K.W., Rhee, J.Y.
Format: Artikel
Sprache:English
Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
Schlagworte:
Низкотемпеpатуpный магнетизм
Online Zugang:https://nasplib.isofts.kiev.ua/handle/123456789/120126
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films / V.G. Prokhorov, V.A. Komashko, G.G. Kaminsky, Y.P. Lee, S.Y. Park, Y.H. Hyun, V.L. Svetchnikov, K.W. Kim, J.Y. Rhee // Физика низких температур. — 2006. — Т. 32, № 2. — С. 176-183. — Бібліогр.: 39 назв. — англ.

Institution

Digital Library of Periodicals of National Academy of Sciences of Ukraine
id nasplib_isofts_kiev_ua-123456789-120126
record_format dspace
spelling Prokhorov, V.G.
Komashko, V.A.
Kaminsky, G.G.
Lee, Y.P.
Park, S.Y.
Hyun, Y.H.
Svetchnikov, V.L.
Kim, K.W.
Rhee, J.Y.
2017-06-11T07:08:46Z
2017-06-11T07:08:46Z
2006
Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films / V.G. Prokhorov, V.A. Komashko, G.G. Kaminsky, Y.P. Lee, S.Y. Park, Y.H. Hyun, V.L. Svetchnikov, K.W. Kim, J.Y. Rhee // Физика низких температур. — 2006. — Т. 32, № 2. — С. 176-183. — Бібліогр.: 39 назв. — англ.
0132-6414
PACS: 75.70.-i, 75.47.-m, 71.30.+h
https://nasplib.isofts.kiev.ua/handle/123456789/120126
The magnetic and the transport properties of La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films with different thickness, prepared by rf-magnetron sputtering by using the so-called «soft» (or powder) target on LaAlO₃ substrate, have been investigated. The electron-diffraction and the high-resolution electron microscopy (HREM) studies show that the charge-ordered phase is observed at room temperature for all films. Both the paramagnetic-to-ferromagnetic transition at TC ≈ 250 K upon cooling and the appearance of an antiferromagnetic (AFM) phase at TN ≧ 140 K were observed in the La₀.₅Ca₀.₅Mn₀.₃ films, while the La₀.₄Ca₀.₆Mn₀.₃ films exhibited the AFM transition only at the same temperature, excepting the small ferromagnetic (FM) response from a «dead» layer. It was shown that the volume fraction of the FM phase in the La₀.₅Ca₀.₅Mn₀.₃ film did not exceed of and the FM phase coexisted with the AFM one at low temperature. All films manifest an exponential temperature dependence of resistance without evidence of the metal-insulator transition. This is explained by the scarcity of the FM phase for the formation of infinite percolating cluster and by an existence of the charge-ordered phase. The field-dependent magnetoresistance at low temperature is described in terms of the spin-assisted polaron-hopping model.
This work was supported by the KOSEF through the Quantum Photonic Science Research Center, by Korea Research Foundation Grant (KRF-2001-015-DS0015), and by MOST, Korea.
en
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Физика низких температур
Низкотемпеpатуpный магнетизм
Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films
Article
published earlier
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
title Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films
spellingShingle Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films
Prokhorov, V.G.
Komashko, V.A.
Kaminsky, G.G.
Lee, Y.P.
Park, S.Y.
Hyun, Y.H.
Svetchnikov, V.L.
Kim, K.W.
Rhee, J.Y.
Низкотемпеpатуpный магнетизм
title_short Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films
title_full Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films
title_fullStr Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films
title_full_unstemmed Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films
title_sort magnetic and transport properties of charge ordered la₀.₅ca₀.₅mn₀.₃ and la₀.₄ca₀.₆mn₀.₃ films
author Prokhorov, V.G.
Komashko, V.A.
Kaminsky, G.G.
Lee, Y.P.
Park, S.Y.
Hyun, Y.H.
Svetchnikov, V.L.
Kim, K.W.
Rhee, J.Y.
author_facet Prokhorov, V.G.
Komashko, V.A.
Kaminsky, G.G.
Lee, Y.P.
Park, S.Y.
Hyun, Y.H.
Svetchnikov, V.L.
Kim, K.W.
Rhee, J.Y.
topic Низкотемпеpатуpный магнетизм
topic_facet Низкотемпеpатуpный магнетизм
publishDate 2006
language English
container_title Физика низких температур
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
format Article
description The magnetic and the transport properties of La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films with different thickness, prepared by rf-magnetron sputtering by using the so-called «soft» (or powder) target on LaAlO₃ substrate, have been investigated. The electron-diffraction and the high-resolution electron microscopy (HREM) studies show that the charge-ordered phase is observed at room temperature for all films. Both the paramagnetic-to-ferromagnetic transition at TC ≈ 250 K upon cooling and the appearance of an antiferromagnetic (AFM) phase at TN ≧ 140 K were observed in the La₀.₅Ca₀.₅Mn₀.₃ films, while the La₀.₄Ca₀.₆Mn₀.₃ films exhibited the AFM transition only at the same temperature, excepting the small ferromagnetic (FM) response from a «dead» layer. It was shown that the volume fraction of the FM phase in the La₀.₅Ca₀.₅Mn₀.₃ film did not exceed of and the FM phase coexisted with the AFM one at low temperature. All films manifest an exponential temperature dependence of resistance without evidence of the metal-insulator transition. This is explained by the scarcity of the FM phase for the formation of infinite percolating cluster and by an existence of the charge-ordered phase. The field-dependent magnetoresistance at low temperature is described in terms of the spin-assisted polaron-hopping model.
issn 0132-6414
url https://nasplib.isofts.kiev.ua/handle/123456789/120126
citation_txt Magnetic and transport properties of charge ordered La₀.₅Ca₀.₅Mn₀.₃ and La₀.₄Ca₀.₆Mn₀.₃ films / V.G. Prokhorov, V.A. Komashko, G.G. Kaminsky, Y.P. Lee, S.Y. Park, Y.H. Hyun, V.L. Svetchnikov, K.W. Kim, J.Y. Rhee // Физика низких температур. — 2006. — Т. 32, № 2. — С. 176-183. — Бібліогр.: 39 назв. — англ.
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first_indexed 2025-12-07T17:15:10Z
last_indexed 2025-12-07T17:15:10Z
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