Suppression of the Magnetic Transition in Ultrasmall ϵ-Fe2O3 Nanoparticles: the Size Effect from Nuclear Forward Scattering Data Full article
| Journal |
Journal of Experimental and Theoretical Physics Letters (JETP Letters)
ISSN: 0021-3640 , E-ISSN: 1090-6487 |
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| Output data | Year: 2025, Volume: 121, Number: 10, Pages: 800–805 Pages count : 6 DOI: 10.1134/S0021364025606396 | ||||
| Tags | VERWEY TRANSITION; MORIN TRANSITION; HIGH-TEMPERATURE; EPSILON-Fe2O3; MOSSBAUER; Fe3O4 | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | |
| 2 | Ministry of Science and Higher Education of the Russian Federation | ГЗ-2024-2028 |
Abstract:
The features of the magnetic structure of ultrasmall ϵ-Fe2O3 nanoparticles have been studied by the nuclear forward scattering technique using synchrotron radiation. The sample consists of isolated ϵ-Fe2O3 nanoparticles with an average size of nm immobilized in a SiO2 xerogel matrix. The time-domain spectra have been measured in the temperature range of 4–300 K in zero external magnetic field and field T applied in the longitudinal direction. The character of the change in the hyperfine field Hhf as a function of the external magnetic field is the same in the entire temperature range: unlike large ϵ-Fe2O3 particles, a monotonic increase in Hhf is observed in the external field. These results indicate that there is no magnetic transition in the temperature range of 80–150 K for ultrasmall (smaller than 9 nm) ϵ-Fe2O3 particles, and the magnetic structure is noncollinear in the range of 4–300 K.
Cite:
Knyazev Y.V.
, Balaev D.A.
, Dubrovskiy A.A.
, Semenov S.V.
, Kirillov V.L.
, Martyanov O.N.
Suppression of the Magnetic Transition in Ultrasmall ϵ-Fe2O3 Nanoparticles: the Size Effect from Nuclear Forward Scattering Data
Journal of Experimental and Theoretical Physics Letters (JETP Letters). 2025. V.121. N10. P.800–805. DOI: 10.1134/S0021364025606396 WOS Scopus OpenAlex
Suppression of the Magnetic Transition in Ultrasmall ϵ-Fe2O3 Nanoparticles: the Size Effect from Nuclear Forward Scattering Data
Journal of Experimental and Theoretical Physics Letters (JETP Letters). 2025. V.121. N10. P.800–805. DOI: 10.1134/S0021364025606396 WOS Scopus OpenAlex
Original:
Князев Ю.В.
, Балаев Д.А.
, Дубровский А.А.
, Семёнов С.В.
, Кириллов В.Л.
, Мартьянов О.Н.
Подавление магнитного перехода в ультрамалых наночастицах ∈-FE2O3 - размерный эффект по данным метода ядерного рассеяния вперед
Письма в Журнал экспериментальной и теоретической физики. 2025. Т.121. №9-10. С.839-845. DOI: 10.31857/S0370274X25050202 РИНЦ
Подавление магнитного перехода в ультрамалых наночастицах ∈-FE2O3 - размерный эффект по данным метода ядерного рассеяния вперед
Письма в Журнал экспериментальной и теоретической физики. 2025. Т.121. №9-10. С.839-845. DOI: 10.31857/S0370274X25050202 РИНЦ
Dates:
| Submitted: | Apr 9, 2025 |
| Accepted: | Apr 22, 2025 |
| Published print: | May 1, 2025 |
| Published online: | Jul 14, 2025 |
Identifiers:
| Web of science: | WOS:001528992300007 |
| Scopus: | 2-s2.0-105010694082 |
| OpenAlex: | W4412399313 |
Citing:
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