The Manifestation of Surface and Size Effects in the Magnetic Properties of ε-Fe2O3 Nanoparticles. (Brief overview) Full article
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Physics of the Solid State
ISSN: 1063-7834 , E-ISSN: 1090-6460 |
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| Output data | Year: 2023, Volume: 65, Number: 6, Pages: 938-946 Pages count : 9 DOI: 10.21883/pss.2023.06.56105.12h | ||||
| Tags | iron oxide ε-Fe2O3, nanoparticles, size effect, surface magnetic anisotropy | ||||
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Abstract:
Polymorphic modification of iron oxide, known as ε-Fe2O3, exists only in the form of nanoparticles with characteristic sizes up to several tens of nanometers. Particles of these sizes exhibit a large coercive force, about 20 kOe at room temperature. In the temperature range of 80-150 K, a magnetic transition occurs in ε-Fe2O3, accompanied by a sharp decrease in the coercive force. At the same time, there are significant differences in the magnetic behavior of "large" (~20 nm) particles and ultra-small particles (up to 6 nm). A number of experimental facts indicate the manifestation of size effects that lead to a change in the magnetic structure in particles of these sizes. In addition, a surface effect is also manifested for such particles - a significant contribution to the magnetic behavior is governed by surface magnetic anisotropy. In this paper, a brief review of the manifestation of these size and surface effects in the magnetic properties of ε-Fe2O3 nanoparticles is carried out. Keywords: iron oxide ε-Fe2O3, nanoparticles, size effect, surface magnetic anisotropy.
Cite:
Balaev D.A.
, Dubrovsky A.A.
, Knyazev Y.V.
, Semenov S.V.
, Kirillov V.L.
, Martyanov O.N.
The Manifestation of Surface and Size Effects in the Magnetic Properties of ε-Fe2O3 Nanoparticles. (Brief overview)
Physics of the Solid State. 2023. V.65. N6. P.938-946. DOI: 10.21883/pss.2023.06.56105.12h РИНЦ OpenAlex
The Manifestation of Surface and Size Effects in the Magnetic Properties of ε-Fe2O3 Nanoparticles. (Brief overview)
Physics of the Solid State. 2023. V.65. N6. P.938-946. DOI: 10.21883/pss.2023.06.56105.12h РИНЦ OpenAlex
Original:
Балаев Д.А.
, Дубровский А.А.
, Князев Ю.В.
, Семенов С.В.
, Кириллов В.Л.
, Мартьянов О.Н.
Проявление поверхностных и размерных эффектов в магнитных свойствах наночастиц ε-Fe2O3. (Краткий обзор)
Физика твердого тела. 2023. Т.65. №6. С.979-988. DOI: 10.21883/FTT.2023.06.55654.12H РИНЦ OpenAlex
Проявление поверхностных и размерных эффектов в магнитных свойствах наночастиц ε-Fe2O3. (Краткий обзор)
Физика твердого тела. 2023. Т.65. №6. С.979-988. DOI: 10.21883/FTT.2023.06.55654.12H РИНЦ OpenAlex
Dates:
| Submitted: | Apr 17, 2023 |
| Accepted: | May 11, 2023 |
Identifiers:
| Elibrary: | 59755372 |
| OpenAlex: | W4385653566 |