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Temperature of the Magnetic Ordering of the Trivalent Iron Oxide ε-Fe2O3 Full article

Common Language: Английский, Genre: Full article,
Status: Published, Source type: Translated
Journal Physics of the Solid State
ISSN: 1063-7834 , E-ISSN: 1090-6460
Output data Year: 2019, Volume: 61, Number: 3, Pages: 345-349 Pages count : 5 DOI: 10.1134/S1063783419030053
Tags GIANT COERCIVE FIELD; FERROMAGNETIC-RESONANCE; PHASE-TRANSITION; SILICA-GEL; NANOPARTICLES; Fe2O3/SiO2; PARTICLES
Authors Balaev D.A. 1 , Dubrovskiy A.A. 1 , Yakushkin S.S. 2 , Bukhtiyarova G.A. 2 , Martyanov O.N. 2
Affiliations
1 Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch,Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
2 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Funding (1)

1 Russian Science Foundation 17-12-01111

Abstract: The trivalent iron oxide ε-Fe2O3 is a fairly rare polymorphic iron oxide modification, which only exists in the form of nanoparticles. This magnetically ordered material exhibits an intriguing magnetic behavior, specifically, a significant room-temperature coercivity H C (up to ~20 kOe) and a magnetic transition in the temperature range of 80–150 K accompanied by a sharp decrease in the H C value. Previously, the temperature of the transition to the paramagnetic state for ε-Fe2O3 was believed to be about 500 K. However, recent investigations have shown that the magnetically ordered phase exists in ε-Fe2O3 also at higher temperatures and, around 500 K, another magnetic transition occurs. Using the data on the magnetization and temperature evolution of the ferromagnetic resonance spectra, it is shown that the temperature of the transition of ε-Fe2O3 particles 3–10 nm in size to the paramagnetic state is ~850 K.
Cite: Balaev D.A. , Dubrovskiy A.A. , Yakushkin S.S. , Bukhtiyarova G.A. , Martyanov O.N.
Temperature of the Magnetic Ordering of the Trivalent Iron Oxide ε-Fe2O3
Physics of the Solid State. 2019. V.61. N3. P.345-349. DOI: 10.1134/S1063783419030053 WOS Scopus РИНЦ
ArticleLinkType.TRANSLATED_TO_ORIGINAL: Балаев Д.А. , Дубровский А.А. , Якушкин С.С. , Бухтиярова Г.А. , Мартьянов О.Н.
Температура магнитного упорядочения оксида трехвалентного железа ε-Fe2O3
Физика твердого тела. 2019. Т.61. №3. С.478-482. DOI: 10.21883/ftt.2019.03.47239.277 publication_identifier_short.rsci_identifier_type РИНЦ
Dates:
Submitted: Oct 11, 2018
Published print: Mar 1, 2019
Published online: Apr 22, 2019
Identifiers:
Web of science WOS:000468540100011
Scopus 2-s2.0-85064956321
Elibrary 38692658
AN 2019:876695
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