Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition
We follow the step-by-step progression of events while approaching the Curie temperature Tc from below using ⁵⁷Co substituent as a microprobe in an emission Mössbauer study combined with resistivity measurements. In the temperature range 0.33<T/Tc ≤ 1, the material consists of a mixture of fe...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 1997 |
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1997
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/175714 |
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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. II. Step-by-step snapshots of the metal-insulator transition / V. Chechersky, K. Nomura, A. Nath, H. Ju, R.L. Greene // Физика низких температур. — 1997. — Т. 23, № 7. — С. 731-737. — Бібліогр.: 29 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862699380421689344 |
|---|---|
| author | Chechersky, V. Nomura, K. Nath, A. Ju, H. Greene, R.L. |
| author_facet | Chechersky, V. Nomura, K. Nath, A. Ju, H. Greene, R.L. |
| citation_txt | Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition / V. Chechersky, K. Nomura, A. Nath, H. Ju, R.L. Greene // Физика низких температур. — 1997. — Т. 23, № 7. — С. 731-737. — Бібліогр.: 29 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We follow the step-by-step progression of events while approaching the Curie temperature Tc from below using ⁵⁷Co substituent as a microprobe in an emission Mössbauer study combined with resistivity measurements. In the temperature range 0.33<T/Tc ≤ 1, the material consists of a mixture of ferromagnetic and paramagnetic regions within the same matrix. An increase of the amount of paramagnetic fraction is accompanied by a decrease in electron delocalization in the ferromagnetic regions. At T≥Tc, the electrons are localized to neighboring Mn⁴⁺/Mn³⁺ pairs only, in about 46% of the paramagnetic species. The strength with which Mn atoms are bound to the neighbors also decreases progressively and rather steeply in the range 0.65<T/Tc=1. Zero field resistivity, ρ0, follows linearly with the amount of the paramagnetic phase in the range 0.65<T/Tc<1 and still shows metal-like behavior up to T/Tc≈1.03. 
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| first_indexed | 2025-12-07T16:35:47Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-175714 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T16:35:47Z |
| publishDate | 1997 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Chechersky, V. Nomura, K. Nath, A. Ju, H. Greene, R.L. 2021-02-02T17:14:25Z 2021-02-02T17:14:25Z 1997 Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition / V. Chechersky, K. Nomura, A. Nath, H. Ju, R.L. Greene // Физика низких температур. — 1997. — Т. 23, № 7. — С. 731-737. — Бібліогр.: 29 назв. — англ. 0132-6414 PACS:76.80.+y https://nasplib.isofts.kiev.ua/handle/123456789/175714 We follow the step-by-step progression of events while approaching the Curie temperature Tc from below using ⁵⁷Co substituent as a microprobe in an emission Mössbauer study combined with resistivity measurements. In the temperature range 0.33<T/Tc ≤ 1, the material consists of a mixture of ferromagnetic and paramagnetic regions within the same matrix. An increase of the amount of paramagnetic fraction is accompanied by a decrease in electron delocalization in the ferromagnetic regions. At T≥Tc, the electrons are localized to neighboring Mn⁴⁺/Mn³⁺ pairs only, in about 46% of the paramagnetic species. The strength with which Mn atoms are bound to the neighbors also decreases progressively and rather steeply in the range 0.65<T/Tc=1. Zero field resistivity, ρ0, follows linearly with the amount of the paramagnetic phase in the range 0.65<T/Tc<1 and still shows metal-like behavior up to T/Tc≈1.03. 
 Remove selected A.N. thanks George McLendon for a fruitful discussion and 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. II. Step-by-step snapshots of the metal-insulator transition Article published earlier |
| spellingShingle | Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition Chechersky, V. Nomura, K. Nath, A. Ju, H. Greene, R.L. Низкотемпеpатуpный магнетизм |
| title | Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition |
| title_full | Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition |
| title_fullStr | Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition |
| title_full_unstemmed | Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition |
| title_short | Emission Mössbauer study of CMR manganite La₀.₈Ca₀.₂MnO₃. II. Step-by-step snapshots of the metal-insulator transition |
| title_sort | emission mössbauer study of cmr manganite la₀.₈ca₀.₂mno₃. ii. step-by-step snapshots of the metal-insulator transition |
| topic | Низкотемпеpатуpный магнетизм |
| topic_facet | Низкотемпеpатуpный магнетизм |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/175714 |
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