Magnetite-cobalt ferrite nanoparticles for kerosene-based magnetic fluids

被引：20

作者：

Ayala-Valenzuela, O. ^{[1
,2
]}

Matutes-Aquino, J. ^{[1
]}

Betancourt-Galindo, R. ^{[2
]}

Garcia-Cerda, L. A. ^{[2
]}

Rodriguez Fernandez, O. ^{[2
]}

Fannin, P. C. ^{[3
]}

Giannitsis, A. T. ^{[3
]}

机构：

[1] Ctr Invest Mat Avanzados, Chihuahua, Chih, Mexico

[2] Ctr Invest Quim Aplicada, Saltillo 25000, Coahuila, Mexico

[3] Trinity Coll Dublin, Dept Elect & Elect Engn, Dublin 2, Ireland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 294卷 / 02期

关键词：

Magnetic nanoparticles; Magnetic fluids; Ferroresonance;

D O I：

10.1016/j.jmmm.2005.03.050

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

Due to the magnetic anisotropy introduced by the Co2+ ion in octahedral sites of cubic spinel ferrites, it is possible to tailor the magnetic properties by changing the cobalt content. Magnetic fluids with magnetite-cobalt ferrite nanoparticles given by the formula Co(x)Fe(3-x)O4 with x = 0, 0.2 and 0.4 were prepared. Kerosene and oleic acid were used as liquid carrier and surfactant, respectively. Spherical magnetic nanoparticles were obtained by coprecipitation from metal salts and ammonium hydroxide; afterwards the magnetic fluids were obtained by a peptization process. Powder properties were characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption isotherma (BET), vibrating sample magnetometry (VSM) and fluids by transmission electron microscopy (TEM), thermogravimetric analyzer (TGA), VSM and the short-circuited transmission line technique. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：E37 / E41

页数：5

共 5 条

[1]

INVESTIGATION OF FERROMAGNETIC-RESONANCE IN MAGNETIC FLUIDS BY MEANS OF THE SHORT-CIRCUITED COAXIAL LINE TECHNIQUE [J].

FANNIN, PC ;

RELIHAN, T ;

CHARLES, SW .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1995, 28 (10) :2003-2006

[2]

On the resonant frequency of ferrofluids subjected to perpendicular and parallel polarizing fields [J].

Fannin, PC ;

Perov, PA ;

Charles, SW .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1999, 32 (18) :2367-2370

[3]

FERRIMAGNETIC ZINC FERRITE FINE POWDERS [J].

HAMDEH, HH ;

HO, JC ;

OLIVER, SA ;

WILLEY, RJ ;

KRAMER, J ;

CHEN, YY ;

LIN, SH ;

YAO, YD ;

DATURI, M ;

BUSCA, G .

IEEE TRANSACTIONS ON MAGNETICS, 1995, 31 (06) :3808-3810

[4]

Synthesis and characterization of superparamagnetic CoxFe3-xO4 nanoparticles [J].

Li, XY ;

Kutal, C .

JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 349 (1-2) :264-268

[5]

INITIAL SUSCEPTIBILITIES OF MAGNETIC FLUIDS DISPERSING MN-ZN FERRITE AND COBALT FERRITE PARTICLES [J].

NAKATSUKA, K ;

JEYADEVAN, B .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (06) :4671-4673

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