Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅
The state with a giant permittivity (ε~10⁴) and ferromagnetism has been observed above 185 K (including room temperature) in single crystals of diluted semiconductor manganite–ferroelectromagnetic Eu₀.₈Ce₀.₂Mn₂O₅ in the investigations of x-ray diffraction, dielectric and magnetic properties, conduct...
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| Published in: | Физика низких температур |
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| Date: | 2010 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2010
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/117176 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ / E.I. Golovenchits, V.A. Sanina, V.G. Zalesskii, M.P. Scheglov // Физика низких температур. — 2010. — Т. 36, № 6. — С. 654–664. — Бібліогр.: 23 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862728200817213440 |
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| author | Golovenchits, E.I. Sanina, V.A. Zalesskii, V.G. Scheglov, M.P. |
| author_facet | Golovenchits, E.I. Sanina, V.A. Zalesskii, V.G. Scheglov, M.P. |
| citation_txt | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ / E.I. Golovenchits, V.A. Sanina, V.G. Zalesskii, M.P. Scheglov // Физика низких температур. — 2010. — Т. 36, № 6. — С. 654–664. — Бібліогр.: 23 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The state with a giant permittivity (ε~10⁴) and ferromagnetism has been observed above 185 K (including room temperature) in single crystals of diluted semiconductor manganite–ferroelectromagnetic Eu₀.₈Ce₀.₂Mn₂O₅ in the investigations of x-ray diffraction, dielectric and magnetic properties, conductivity. X-ray diffraction study has revealed a layered superstructure along the c axis at room temperature. A model of the state with a giant ε including as-grown 2D layers with doping impurities, charge carriers, and double-exchange coupled Mn³⁺–Mn⁴⁺ ion pairs is suggested. At low temperatures these layers form isolated electrically neutral small-size 1D superlattices, in which de Haas van Alphen oscillations were observed. As temperature grows and hopping conductivity increases, the charge carrier self-organization in the crystal cause formation of a layered superstructure consisting of charged layers (with an excess Mn³⁺ concentration) alternating with dielectric layers of the initial crystal — the ferroelectricity state due to charge ordering. Ferromagnetism results from double exchange between Mn³⁺ and Mn⁴⁺ ions through of charge carriers in the charged layers.
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| first_indexed | 2025-12-07T19:08:00Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-117176 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T19:08:00Z |
| publishDate | 2010 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
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| spelling | Golovenchits, E.I. Sanina, V.A. Zalesskii, V.G. Scheglov, M.P. 2017-05-20T14:28:39Z 2017-05-20T14:28:39Z 2010 Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ / E.I. Golovenchits, V.A. Sanina, V.G. Zalesskii, M.P. Scheglov // Физика низких температур. — 2010. — Т. 36, № 6. — С. 654–664. — Бібліогр.: 23 назв. — англ. 0132-6414 PACS: 75.47.Lx, 76.50.+g, 77.80.–e https://nasplib.isofts.kiev.ua/handle/123456789/117176 The state with a giant permittivity (ε~10⁴) and ferromagnetism has been observed above 185 K (including room temperature) in single crystals of diluted semiconductor manganite–ferroelectromagnetic Eu₀.₈Ce₀.₂Mn₂O₅ in the investigations of x-ray diffraction, dielectric and magnetic properties, conductivity. X-ray diffraction study has revealed a layered superstructure along the c axis at room temperature. A model of the state with a giant ε including as-grown 2D layers with doping impurities, charge carriers, and double-exchange coupled Mn³⁺–Mn⁴⁺ ion pairs is suggested. At low temperatures these layers form isolated electrically neutral small-size 1D superlattices, in which de Haas van Alphen oscillations were observed. As temperature grows and hopping conductivity increases, the charge carrier self-organization in the crystal cause formation of a layered superstructure consisting of charged layers (with an excess Mn³⁺ concentration) alternating with dielectric layers of the initial crystal — the ferroelectricity state due to charge ordering. Ferromagnetism results from double exchange between Mn³⁺ and Mn⁴⁺ ions through of charge carriers in the charged layers. The authors would like to thank N.V. Zaitzeva for x-ray phase analysis of the samples.
 The work was supported by the Russian Foundation for Basic Research (grant 08-02-00077) and Presidium of RAS (Programme 03). en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Магнитоэлектрические эффекты в сегнетомагнетиках Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ Article published earlier |
| spellingShingle | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ Golovenchits, E.I. Sanina, V.A. Zalesskii, V.G. Scheglov, M.P. Магнитоэлектрические эффекты в сегнетомагнетиках |
| title | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ |
| title_full | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ |
| title_fullStr | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ |
| title_full_unstemmed | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ |
| title_short | Charge carrier self-organization in ferroelectromagnetic semiconductors Eu₀.₈Ce₀.₂Mn₂O₅ |
| title_sort | charge carrier self-organization in ferroelectromagnetic semiconductors eu₀.₈ce₀.₂mn₂o₅ |
| topic | Магнитоэлектрические эффекты в сегнетомагнетиках |
| topic_facet | Магнитоэлектрические эффекты в сегнетомагнетиках |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117176 |
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