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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| Опубліковано в: : | Физика низких температур |
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| Дата: | 1997 |
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| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1997
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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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Chechersky, V. Nath, A. Ju, H. Greene, R.L. 2021-02-02T17:09:14Z 2021-02-02T17:09:14Z 1997 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 https://nasplib.isofts.kiev.ua/handle/123456789/175713 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. A. N. thanks the Donors of the Petroleum Research Fund administered by the ACS for partial support of this research. R. L. G. acknowledges support from NSF under DMR-9209668. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Низкотемпеpатуpный магнетизм Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism |
| spellingShingle |
Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. I. Anomalous ferromagnetism Chechersky, V. Nath, A. Ju, H. Greene, R.L. Низкотемпеpатуpный магнетизм |
| 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 |
| author |
Chechersky, V. Nath, A. Ju, H. Greene, R.L. |
| author_facet |
Chechersky, V. Nath, A. Ju, H. Greene, R.L. |
| topic |
Низкотемпеpатуpный магнетизм |
| topic_facet |
Низкотемпеpатуpный магнетизм |
| publishDate |
1997 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| 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.
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| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.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. |
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