Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism

Using ⁵⁷Co emission Mössbauer technique, we present clear evidence that in Ca-doped manganite, the magnetic and paramagnetic phases coexist below Tc, with the abundance of the latter increasing with temperature. In contrast with the regular ferromagnetic materials, the variation of the hyperfine int...

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Datum:1997
Hauptverfasser: Chechersky, V., Nath, A., Ju, H., Greene, R.L.
Format: Artikel
Sprache:English
Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 1997
Schriftenreihe:Физика низких температур
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Online Zugang:http://dspace.nbuv.gov.ua/handle/123456789/175713
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Zitieren:Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism / V. Chechersky, A. Nath, H. Ju and R.L. Greene // Физика низких температур. — 1997. — Т. 23, № 7. — С. 727-731. — Бібліогр.: 26 назв. — англ.

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spelling irk-123456789-1757132021-02-03T01:27:46Z Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism Chechersky, V. Nath, A. Ju, H. Greene, R.L. Низкотемпеpатуpный магнетизм Using ⁵⁷Co emission Mössbauer technique, we present clear evidence that in Ca-doped manganite, the magnetic and paramagnetic phases coexist below Tc, with the abundance of the latter increasing with temperature. In contrast with the regular ferromagnetic materials, the variation of the hyperfine internal magnetic field Hint with temperature deviates considerably from the Brillouin relation, and exhibits an abrupt drop at Tc. These features characterize the magnetic transition as a first-order transition. The non-Brillouin behavior of Hint(T) and the temperature dependence of the shape of the magnetically split sextet indicate the presence of spin fluctuations in this material well below Tc. 1997 Article Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism / V. Chechersky, A. Nath, H. Ju and R.L. Greene // Физика низких температур. — 1997. — Т. 23, № 7. — С. 727-731. — Бібліогр.: 26 назв. — англ. 0132-6414 PACS: 76.80.+ y http://dspace.nbuv.gov.ua/handle/123456789/175713 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Низкотемпеpатуpный магнетизм
Низкотемпеpатуpный магнетизм
spellingShingle Низкотемпеpатуpный магнетизм
Низкотемпеpатуpный магнетизм
Chechersky, V.
Nath, A.
Ju, H.
Greene, R.L.
Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism
Физика низких температур
description Using ⁵⁷Co emission Mössbauer technique, we present clear evidence that in Ca-doped manganite, the magnetic and paramagnetic phases coexist below Tc, with the abundance of the latter increasing with temperature. In contrast with the regular ferromagnetic materials, the variation of the hyperfine internal magnetic field Hint with temperature deviates considerably from the Brillouin relation, and exhibits an abrupt drop at Tc. These features characterize the magnetic transition as a first-order transition. The non-Brillouin behavior of Hint(T) and the temperature dependence of the shape of the magnetically split sextet indicate the presence of spin fluctuations in this material well below Tc.
format Article
author Chechersky, V.
Nath, A.
Ju, H.
Greene, R.L.
author_facet Chechersky, V.
Nath, A.
Ju, H.
Greene, R.L.
author_sort Chechersky, V.
title Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism
title_short Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism
title_full Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism
title_fullStr Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism
title_full_unstemmed Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism
title_sort emission mössbauer study of cmr manganite la₀.₈ca₀.₂mno₃. i. anomalous ferromagnetism
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 1997
topic_facet Низкотемпеpатуpный магнетизм
url http://dspace.nbuv.gov.ua/handle/123456789/175713
citation_txt Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism / V. Chechersky, A. Nath, H. Ju and R.L. Greene // Физика низких температур. — 1997. — Т. 23, № 7. — С. 727-731. — Бібліогр.: 26 назв. — англ.
series Физика низких температур
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AT juh emissionmossbauerstudyofcmrmanganitela08ca02mno3ianomalousferromagnetism
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last_indexed 2025-07-15T13:06:17Z
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