Magnetic properties of few nanometers ε-Fe2O3 nanoparticles supported on the silica

被引：26

作者：

Yakushkin, S. S. ^{[1
]}

Dubrovskiy, A. A. ^{[2
]}

Balaev, D. A. ^{[2
]}

Shaykhutdinov, K. A. ^{[2
]}

Bukhtiyarova, G. A. ^{[1
]}

Martyanov, O. N. ^{[1
]}

机构：

[1] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia

[2] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 04期

关键词：

HIGH-TEMPERATURE; IRON; STABILIZATION; OXIDE; GEL;

D O I：

10.1063/1.3686647

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic properties of epsilon-Fe2O3 nanoparticles supported on silica with the average size of few nanometers, narrow size distribution and no admixture of any other iron oxide polymorphs are investigated. The investigation of the temperature behavior of magnetization within the temperature range from 4.2 to 1000 K revealed the presence of several magnetic subsystems in the species under study. The temperatures' behavior of the magnetic moment value indicates ferrimagnetic ordering in the epsilon-Fe2O3 nanoparticles with a Curie temperature of about 800 K and points to the existence of a significant paramagnetic contribution becoming apparent at low temperatures. According to the electron spin resonance data, the particles possess superparamagnetic behavior at temperature higher similar to 120K. The model of the magnetic structure of monophase system of few nanometers epsilon-Fe2O3 nanoparticles supported on silica is proposed. (C) 2012 American Institute of Physics. [doi:10.1063/1.3686647]

引用

页数：5

共 50 条

[11] Magnetic properties of Fe2O3 nanoparticles embedded in hollows of periodic nanoporous silica
Zelenakova, A.
Kovac, J.
Zelenak, V.
JOURNAL OF APPLIED PHYSICS, 2010, 108 (03)
[12] ε-Fe2O3 nanoparticles embedded in silica xerogel - Magnetic metamaterial
Yakushkin, S. S.
Balaev, D. A.
Dubrovskiy, A. A.
Semenov, S. V.
Knyazev, Yu. V.
Bayukov, O. A.
Kirillov, V. L.
Ivantsov, R. D.
Edelman, I. S.
Martyanov, O. N.
CERAMICS INTERNATIONAL, 2018, 44 (15) : 17852 - 17857
[13] Fe2O3 and Gd2O3 Nanoparticles Embedded in Mesoporous Silica: Magnetic Properties Comparison
Kapusta, O.
Zelenakova, A.
Hrubovcak, P.
Girman, V.
Zelenak, V.
ACTA PHYSICA POLONICA A, 2017, 131 (04) : 860 - 862
[14] Magnetically textured γ-Fe2O3 nanoparticles in a silica gel matrix:: Structural and magnetic properties
Bentivegna, F
Ferre, J
Nyvlt, M
Jamet, JP
Imhoff, D
Canva, M
Brun, A
Veillet, P
Visnovsky, S
Chaput, F
Boilot, JP
JOURNAL OF APPLIED PHYSICS, 1998, 83 (12) : 7776 - 7788
[15] Magnetic properties of mechanochemically synthesized γ-Fe2O3 nanoparticles
Tsuzuki, Takuya
Schaeffel, Franziska
Muroi, Michihito
McCormick, Paul G.
JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (17) : 5420 - 5425
[16] Investigation of magnetic properties of interacting Fe2O3 nanoparticles
Zysler, RD
Fiorani, D
Testa, AM
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 224 (01) : 5 - 11
[17] Structural effects on the magnetic properties of γ-Fe2O3 nanoparticles
Morales, MP
Andres-Vergés, M
Veintemillas-Verdaguer, S
Montero, MI
Serna, CJ
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 203 : 146 - 148
[18] Size effects in the magnetic properties of ε-Fe2O3 nanoparticles
Dubrovskiy, A. A.
Balaev, D. A.
Shaykhutdinov, K. A.
Bayukov, O. A.
Pletnev, O. N.
Yakushkin, S. S.
Bukhtiyarova, G. A.
Martyanov, O. N.
JOURNAL OF APPLIED PHYSICS, 2015, 118 (21)
[19] Adsorption phenomena and magnetic properties of γ-Fe2O3 nanoparticles
Prodan, D
Chanéac, C
Tronc, E
Jolivet, JP
Cherkaour, R
Ezzir, A
Noguès, M
Dormann, JL
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 203 : 63 - 65
[20] Preparation and Magnetic Properties of Parallelepiped α-Fe2O3 Nanoparticles
Liu, Zhong
Ding, Xiuping
Yu, Ruitao
2016 3RD INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING (SMNE 2016), 2016, : 23 - 27

← 1 2 3 4 5 →