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.

引用

页码：1415 / 1417

页数：3

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