Structure and magnetic properties of CoFe2O4 and Fe3O4 nanoparticles

被引：24
|
作者：
Chitu, L.
Jergel, M.
Majkova, E.
Luby, S.
Capek, I.
Satka, A.
Ivan, J.
Kovac, J.
Timko, M.
机构：
[1] Slovak Acad Sci, Inst Phys, Bratislava, Slovakia
[2] Slovak Acad Sci, Inst Polymer, Bratislava 84236, Slovakia
[3] Slovak Tech Univ, Fac Elect Engn & Informat, Ctr Int Laser, Bratislava 81219, Slovakia
[4] Slovak Acad Sci, Inst Mat & Machine Mech, Bratislava 83102, Slovakia
[5] Slovak Acad Sci, Inst Expt Phys, Kosice 04501, Slovakia
来源：
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2007年 / 27卷 / 5-8期
关键词：
Fe3O4; CoFe2O4; nanoparticles; magnetic particles;
D O I：
10.1016/j.msec.2006.07.036
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Fe3O4 and CoFe2O4 nanoparticles of radius 3.2 +/- 0.3 and 3.8 +/- 0.3 nm, respectively, were synthesized by the high-temperature solution phase reaction of metal acetylacetonates. Nanoparticles with the spherical shape and well-developed crystalline structure are superparamagnetic at room temperature. The CoFe2O4 showed high coercivity up to 1.7 T at low temperatures and a step-like change of magnetization at 138 K, which might point at the Verwey transition. (C) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：1415 / 1417
页数：3
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