Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films
The amorphous, nanoclustered, and self-organizing bilayered Nd₀.₅Sr₀.₅MnO₃ films have been prepared by a rf-magnetron sputtering. The amorphous film turn out to be a typical paramagnet with a freely moving of the individual Mn spins, the magnetic properties of which are well described by the Curi...
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| Дата: | 2007 |
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| Автори: | , , , , , , , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120920 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films / V.G. Prokhorov, G.G. Kaminsky, V.A. Komashko, Y.P. Lee, S.Y. Park, Y.H. Hyun, J.B. Kim, J.S. Park, V.L. Svetchnikov, V.P. Pashchenko, V.A. Khokhlov // Физика низких температур. — 2007. — Т. 33, № 08. — С. 889–896. — Бібліогр.: 25 назв. — англ. |
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irk-123456789-1209202017-06-14T03:04:42Z Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films Prokhorov, V.G. Kaminsky, G.G. Komashko, V.A. Lee, Y.P. Park, S.Y. Hyun, Y.H. Kim, J.B. Park, J.S. Svetchnikov, V.L. Pashchenko, V.P. Khokhlov, V.A. Низкотемпеpатуpный магнетизм The amorphous, nanoclustered, and self-organizing bilayered Nd₀.₅Sr₀.₅MnO₃ films have been prepared by a rf-magnetron sputtering. The amorphous film turn out to be a typical paramagnet with a freely moving of the individual Mn spins, the magnetic properties of which are well described by the Curie–Weiss approximation. The nanoclustered film manifests the magnetic properties mimic to the superparamagnetic particles with a nonclassical magnetic dynamics. Taking into account the unique shape of the hysteresis loops, which have hysteretic lobes at high magnetic field but are nonhysteretic as the field crosses zero, we suggest that each particle (nanocluster) is the closure magnetic domain (or magnetic vortex) rather than the single one. At the same time, the blocked to unblocked transition was observed with increasing temperature similar to the usual superparamagnet. The self-organizing bilayered film demonstrates a negative exchange bias, which is typical for the ferromagnet/antiferromagnet hybrid system in spite of that both layers in our case have a ferromagnetic origin. The magnetic properties of the films are discussed in detail on the base of modern theoretical models. 2007 Article Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films / V.G. Prokhorov, G.G. Kaminsky, V.A. Komashko, Y.P. Lee, S.Y. Park, Y.H. Hyun, J.B. Kim, J.S. Park, V.L. Svetchnikov, V.P. Pashchenko, V.A. Khokhlov // Физика низких температур. — 2007. — Т. 33, № 08. — С. 889–896. — Бібліогр.: 25 назв. — англ. 0132-6414 PACS: 73.63.Bd, 75.47.Gk, 75.47.Lx, 75.75.+a http://dspace.nbuv.gov.ua/handle/123456789/120920 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 Prokhorov, V.G. Kaminsky, G.G. Komashko, V.A. Lee, Y.P. Park, S.Y. Hyun, Y.H. Kim, J.B. Park, J.S. Svetchnikov, V.L. Pashchenko, V.P. Khokhlov, V.A. Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films Физика низких температур |
| description |
The amorphous, nanoclustered, and self-organizing bilayered Nd₀.₅Sr₀.₅MnO₃ films have been prepared
by a rf-magnetron sputtering. The amorphous film turn out to be a typical paramagnet with a freely moving
of the individual Mn spins, the magnetic properties of which are well described by the Curie–Weiss approximation.
The nanoclustered film manifests the magnetic properties mimic to the superparamagnetic particles
with a nonclassical magnetic dynamics. Taking into account the unique shape of the hysteresis loops, which
have hysteretic lobes at high magnetic field but are nonhysteretic as the field crosses zero, we suggest that
each particle (nanocluster) is the closure magnetic domain (or magnetic vortex) rather than the single one.
At the same time, the blocked to unblocked transition was observed with increasing temperature similar to
the usual superparamagnet. The self-organizing bilayered film demonstrates a negative exchange bias,
which is typical for the ferromagnet/antiferromagnet hybrid system in spite of that both layers in our case
have a ferromagnetic origin. The magnetic properties of the films are discussed in detail on the base of modern
theoretical models. |
| format |
Article |
| author |
Prokhorov, V.G. Kaminsky, G.G. Komashko, V.A. Lee, Y.P. Park, S.Y. Hyun, Y.H. Kim, J.B. Park, J.S. Svetchnikov, V.L. Pashchenko, V.P. Khokhlov, V.A. |
| author_facet |
Prokhorov, V.G. Kaminsky, G.G. Komashko, V.A. Lee, Y.P. Park, S.Y. Hyun, Y.H. Kim, J.B. Park, J.S. Svetchnikov, V.L. Pashchenko, V.P. Khokhlov, V.A. |
| author_sort |
Prokhorov, V.G. |
| title |
Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films |
| title_short |
Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films |
| title_full |
Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films |
| title_fullStr |
Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films |
| title_full_unstemmed |
Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films |
| title_sort |
nonclassical magnetic dynamics and negative exchange bias in nd₀.₅sr₀.₅mno₃ films |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2007 |
| topic_facet |
Низкотемпеpатуpный магнетизм |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/120920 |
| citation_txt |
Nonclassical magnetic dynamics and negative exchange bias in Nd₀.₅Sr₀.₅MnO₃ films / V.G. Prokhorov, G.G. Kaminsky, V.A. Komashko, Y.P. Lee, S.Y. Park, Y.H. Hyun, J.B. Kim, J.S. Park, V.L. Svetchnikov, V.P. Pashchenko, V.A. Khokhlov // Физика низких температур. — 2007. — Т. 33, № 08. — С. 889–896. — Бібліогр.: 25 назв. — англ. |
| series |
Физика низких температур |
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| first_indexed |
2023-10-18T20:38:24Z |
| last_indexed |
2023-10-18T20:38:24Z |
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