Magnetic, transport, and magnetotransport properties of the textured Fe3O4 thin films reactively deposited onto SiO2/Si
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https://elib.sfu-kras.ru/handle/2311/33160Author:
Tarasov, A. S.
Rautskii, M. V.
Lukyanenko, A. V.
Volochaev, M. N.
Eremin, E. V.
Korobtsov, V. V.
Balashev, V. V.
Vikulov, V. A.
Solovyov, L. A.
Volkov, N. V.
Corporate Contributor:
Институт инженерной физики и радиоэлектроники
Базовая кафедра физики твердого тела и нанотехнологий
Date:
2016Journal Name:
Journal of Alloys and CompoundsJournal Quartile in Scopus:
Q1Journal Quartile in Web of Science:
Q1Bibliographic Citation:
Tarasov, A. S. Magnetic, transport, and magnetotransport properties of the textured Fe3O4 thin films reactively deposited onto SiO2/Si [Текст] / A. S. Tarasov, M. V. Rautskii, A. V. Lukyanenko, M. N. Volochaev, E. V. Eremin, V. V. Korobtsov, V. V. Balashev, V. A. Vikulov, L. A. Solovyov, N. V. Volkov // Journal of Alloys and Compounds. — 2016. — Т. 688. — С. 1095-1100Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Abstract:
The structural, magnetic, transport, and magnetotransport properties of Fe3O4 thin films with thicknesses
from 38 nm to 95 nm are systematically investigated. The occurrence of the Verwey transition in
these films at a temperature of about 120 K is established. It is found that the temperature dependences
of the magnetic moment have a feature near 40 K, which can be attributed to the multiferroic phase.
According to the X-ray diffraction data, the film structure represents a (001) texture. As was established
using transmission electron microscopy, the height and width of texture crystallites increase with film
thickness. Analysis of the temperature dependences of the resistivity showed that the dominant carrier
transport mechanism in the films is thermoactivated tunneling. The thermoactivation energy, along with
the room-temperature resistivity, decreases with increasing film thicknesses, which is most likely related
to the variation in the crystallite size, especially in the crystallite width. The field dependence of
magnetoresistance behaves similarly over the entire temperature range and has a positive MR peak in
weak fields, which is related to spin-dependent tunneling through Fe3O4 grains and antiferromagnetically
coupled antiphase boundaries.