Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite
In the presented study we have revealed a giant exchange bias in a colossal magnetoresistance Nd²/₃Ca¹/₃MnO₃ perovskite at low temperatures, evident of an intrinsic exchange coupling in this compound. The phenomena found confirms our previous assumption that the low-temperature magnetic structure...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2012 |
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| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2012
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite / A. Feher, V. Desnenko, E. Fertman, S. Dolya, M. Kajňaková, A. Beznosov // Физика низких температур. — 2012. — Т. 38, № 7. — С. 828-832 . — Бібліогр.: 19 назв. — англ. |
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Feher, A. Desnenko, V. Fertman, E. Dolya, S. Kajňaková, M. Beznosov, A. 2017-05-21T17:27:01Z 2017-05-21T17:27:01Z 2012 Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite / A. Feher, V. Desnenko, E. Fertman, S. Dolya, M. Kajňaková, A. Beznosov // Физика низких температур. — 2012. — Т. 38, № 7. — С. 828-832 . — Бібліогр.: 19 назв. — англ. 0132-6414 PACS: 64.75.–g, 75.50.Lk, 75.30.–m,75.47.Lx, 77.22.Gm https://nasplib.isofts.kiev.ua/handle/123456789/117274 In the presented study we have revealed a giant exchange bias in a colossal magnetoresistance Nd²/₃Ca¹/₃MnO₃ perovskite at low temperatures, evident of an intrinsic exchange coupling in this compound. The phenomena found confirms our previous assumption that the low-temperature magnetic structure of the compound is represented by small (nanosized) ferromagnetic clusters immersed within the charge-ordered antiferromagnetic matrix. Magnetic behavior of the Nd²/₃Ca¹/₃MnO₃ perovskite is consistent with a cluster-glass magnetic state and does not agree with a classical spin-glass state observed in a variety of disordered magnetic systems. We think that the cluster-glass magnetic behavior of Nd²/₃Ca¹/₃MnO₃ originates from the selforganized phase-separated state of the compound. The Cole-Cole analysis of the dynamic susceptibility at lowtemperatures has shown extremely broad distribution of relaxation times, indicating that spins are frozen at a “macroscopic” time scale. Slow relaxation of the zero-field-cooled magnetization has been experimentally revealed as well. This slow relaxation confirms the cluster-glass magnetic state of the compound. Two strongly different relaxation mechanisms were found: the first one is characteristic for temperatures below the freezing temperature Tg ∼ 60 K, the second one is characteristic for higher temperatures. This paper is dedicated to Professor Viktor Valentinovich Eremenko on the occasion of his 80th birthday. One of authors (A.F.) is very thankful to Prof. Eremenko for decades of fruitful collaboration. Viktor Valentinovich was and still is an excellent mentor in the field of magnetism for the whole Košice Low Temperature Group. Authors are thankful to Dr. D. Sheptyakov (PSI, Switzerland) and to Dr. D. Khalyavin (ISIS, United Kingdom) for fruitful collaboration. This work was supported by the SAS Centre of Excellence CFNT MVEP, by the ERDF EU (European Union European regional development fund) grant under the contract No. TMS26220120005 and by the Slovak Grant Agency VEGA-1/0159/09. The financial support of U.S. Steel Košice is gratefully acknowledged. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Магнетизм Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite |
| spellingShingle |
Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite Feher, A. Desnenko, V. Fertman, E. Dolya, S. Kajňaková, M. Beznosov, A. Магнетизм |
| title_short |
Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite |
| title_full |
Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite |
| title_fullStr |
Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite |
| title_full_unstemmed |
Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite |
| title_sort |
direct evidence of the low-temperature cluster-glass magnetic state of nd²/₃ca¹/₃mno₃ perovskite |
| author |
Feher, A. Desnenko, V. Fertman, E. Dolya, S. Kajňaková, M. Beznosov, A. |
| author_facet |
Feher, A. Desnenko, V. Fertman, E. Dolya, S. Kajňaková, M. Beznosov, A. |
| topic |
Магнетизм |
| topic_facet |
Магнетизм |
| publishDate |
2012 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
In the presented study we have revealed a giant exchange bias in a colossal magnetoresistance
Nd²/₃Ca¹/₃MnO₃ perovskite at low temperatures, evident of an intrinsic exchange coupling in this compound.
The phenomena found confirms our previous assumption that the low-temperature magnetic structure of the
compound is represented by small (nanosized) ferromagnetic clusters immersed within the charge-ordered antiferromagnetic
matrix. Magnetic behavior of the Nd²/₃Ca¹/₃MnO₃ perovskite is consistent with a cluster-glass
magnetic state and does not agree with a classical spin-glass state observed in a variety of disordered magnetic
systems. We think that the cluster-glass magnetic behavior of Nd²/₃Ca¹/₃MnO₃ originates from the selforganized
phase-separated state of the compound. The Cole-Cole analysis of the dynamic susceptibility at lowtemperatures
has shown extremely broad distribution of relaxation times, indicating that spins are frozen at
a “macroscopic” time scale. Slow relaxation of the zero-field-cooled magnetization has been experimentally revealed
as well. This slow relaxation confirms the cluster-glass magnetic state of the compound. Two strongly
different relaxation mechanisms were found: the first one is characteristic for temperatures below the freezing
temperature Tg ∼ 60 K, the second one is characteristic for higher temperatures.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/117274 |
| citation_txt |
Direct evidence of the low-temperature cluster-glass magnetic state of Nd²/₃Ca¹/₃MnO₃ perovskite / A. Feher, V. Desnenko, E. Fertman, S. Dolya, M. Kajňaková, A. Beznosov // Физика низких температур. — 2012. — Т. 38, № 7. — С. 828-832 . — Бібліогр.: 19 назв. — англ. |
| work_keys_str_mv |
AT fehera directevidenceofthelowtemperatureclusterglassmagneticstateofnd23ca13mno3perovskite AT desnenkov directevidenceofthelowtemperatureclusterglassmagneticstateofnd23ca13mno3perovskite AT fertmane directevidenceofthelowtemperatureclusterglassmagneticstateofnd23ca13mno3perovskite AT dolyas directevidenceofthelowtemperatureclusterglassmagneticstateofnd23ca13mno3perovskite AT kajnakovam directevidenceofthelowtemperatureclusterglassmagneticstateofnd23ca13mno3perovskite AT beznosova directevidenceofthelowtemperatureclusterglassmagneticstateofnd23ca13mno3perovskite |
| first_indexed |
2025-11-30T23:47:28Z |
| last_indexed |
2025-11-30T23:47:28Z |
| _version_ |
1850858800160964608 |